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15278 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
ad584d73a2 |
Tracing updates for 6.9:
Main user visible change:
- User events can now have "multi formats"
The current user events have a single format. If another event is created
with a different format, it will fail to be created. That is, once an
event name is used, it cannot be used again with a different format. This
can cause issues if a library is using an event and updates its format.
An application using the older format will prevent an application using
the new library from registering its event.
A task could also DOS another application if it knows the event names, and
it creates events with different formats.
The multi-format event is in a different name space from the single
format. Both the event name and its format are the unique identifier.
This will allow two different applications to use the same user event name
but with different payloads.
- Added support to have ftrace_dump_on_oops dump out instances and
not just the main top level tracing buffer.
Other changes:
- Add eventfs_root_inode
Only the root inode has a dentry that is static (never goes away) and
stores it upon creation. There's no reason that the thousands of other
eventfs inodes should have a pointer that never gets set in its
descriptor. Create a eventfs_root_inode desciptor that has a eventfs_inode
descriptor and a dentry pointer, and only the root inode will use this.
- Added WARN_ON()s in eventfs
There's some conditionals remaining in eventfs that should never be hit,
but instead of removing them, add WARN_ON() around them to make sure that
they are never hit.
- Have saved_cmdlines allocation also include the map_cmdline_to_pid array
The saved_cmdlines structure allocates a large amount of data to hold its
mappings. Within it, it has three arrays. Two are already apart of it:
map_pid_to_cmdline[] and saved_cmdlines[]. More memory can be saved by
also including the map_cmdline_to_pid[] array as well.
- Restructure __string() and __assign_str() macros used in TRACE_EVENT().
Dynamic strings in TRACE_EVENT() are declared with:
__string(name, source)
And assigned with:
__assign_str(name, source)
In the tracepoint callback of the event, the __string() is used to get the
size needed to allocate on the ring buffer and __assign_str() is used to
copy the string into the ring buffer. There's a helper structure that is
created in the TRACE_EVENT() macro logic that will hold the string length
and its position in the ring buffer which is created by __string().
There are several trace events that have a function to create the string
to save. This function is executed twice. Once for __string() and again
for __assign_str(). There's no reason for this. The helper structure could
also save the string it used in __string() and simply copy that into
__assign_str() (it also already has its length).
By using the structure to store the source string for the assignment, it
means that the second argument to __assign_str() is no longer needed.
It will be removed in the next merge window, but for now add a warning if
the source string given to __string() is different than the source string
given to __assign_str(), as the source to __assign_str() isn't even used
and will be going away.
- Added checks to make sure that the source of __string() is also the
source of __assign_str() so that it can be safely removed in the next
merge window.
Included fixes that the above check found.
- Other minor clean ups and fixes
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Merge tag 'trace-v6.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
"Main user visible change:
- User events can now have "multi formats"
The current user events have a single format. If another event is
created with a different format, it will fail to be created. That
is, once an event name is used, it cannot be used again with a
different format. This can cause issues if a library is using an
event and updates its format. An application using the older format
will prevent an application using the new library from registering
its event.
A task could also DOS another application if it knows the event
names, and it creates events with different formats.
The multi-format event is in a different name space from the single
format. Both the event name and its format are the unique
identifier. This will allow two different applications to use the
same user event name but with different payloads.
- Added support to have ftrace_dump_on_oops dump out instances and
not just the main top level tracing buffer.
Other changes:
- Add eventfs_root_inode
Only the root inode has a dentry that is static (never goes away)
and stores it upon creation. There's no reason that the thousands
of other eventfs inodes should have a pointer that never gets set
in its descriptor. Create a eventfs_root_inode desciptor that has a
eventfs_inode descriptor and a dentry pointer, and only the root
inode will use this.
- Added WARN_ON()s in eventfs
There's some conditionals remaining in eventfs that should never be
hit, but instead of removing them, add WARN_ON() around them to
make sure that they are never hit.
- Have saved_cmdlines allocation also include the map_cmdline_to_pid
array
The saved_cmdlines structure allocates a large amount of data to
hold its mappings. Within it, it has three arrays. Two are already
apart of it: map_pid_to_cmdline[] and saved_cmdlines[]. More memory
can be saved by also including the map_cmdline_to_pid[] array as
well.
- Restructure __string() and __assign_str() macros used in
TRACE_EVENT()
Dynamic strings in TRACE_EVENT() are declared with:
__string(name, source)
And assigned with:
__assign_str(name, source)
In the tracepoint callback of the event, the __string() is used to
get the size needed to allocate on the ring buffer and
__assign_str() is used to copy the string into the ring buffer.
There's a helper structure that is created in the TRACE_EVENT()
macro logic that will hold the string length and its position in
the ring buffer which is created by __string().
There are several trace events that have a function to create the
string to save. This function is executed twice. Once for
__string() and again for __assign_str(). There's no reason for
this. The helper structure could also save the string it used in
__string() and simply copy that into __assign_str() (it also
already has its length).
By using the structure to store the source string for the
assignment, it means that the second argument to __assign_str() is
no longer needed.
It will be removed in the next merge window, but for now add a
warning if the source string given to __string() is different than
the source string given to __assign_str(), as the source to
__assign_str() isn't even used and will be going away.
- Added checks to make sure that the source of __string() is also the
source of __assign_str() so that it can be safely removed in the
next merge window.
Included fixes that the above check found.
- Other minor clean ups and fixes"
* tag 'trace-v6.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (34 commits)
tracing: Add __string_src() helper to help compilers not to get confused
tracing: Use strcmp() in __assign_str() WARN_ON() check
tracepoints: Use WARN() and not WARN_ON() for warnings
tracing: Use div64_u64() instead of do_div()
tracing: Support to dump instance traces by ftrace_dump_on_oops
tracing: Remove second parameter to __assign_rel_str()
tracing: Add warning if string in __assign_str() does not match __string()
tracing: Add __string_len() example
tracing: Remove __assign_str_len()
ftrace: Fix most kernel-doc warnings
tracing: Decrement the snapshot if the snapshot trigger fails to register
tracing: Fix snapshot counter going between two tracers that use it
tracing: Use EVENT_NULL_STR macro instead of open coding "(null)"
tracing: Use ? : shortcut in trace macros
tracing: Do not calculate strlen() twice for __string() fields
tracing: Rework __assign_str() and __string() to not duplicate getting the string
cxl/trace: Properly initialize cxl_poison region name
net: hns3: tracing: fix hclgevf trace event strings
drm/i915: Add missing ; to __assign_str() macros in tracepoint code
NFSD: Fix nfsd_clid_class use of __string_len() macro
...
|
||
Kees Cook
|
472874cf7b |
selftests/exec: Convert remaining /bin/sh to /bin/bash
As was intended with commit |
||
|
Kees Cook
|
0ef58ccb61 |
selftests/exec: execveat: Improve debug reporting
Children processes were reporting their status, duplicating the parent's. Remove that, and add some additional details about the test execution. Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com> Link: https://lore.kernel.org/r/20240313185606.work.073-kees@kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> |
||
Beau Belgrave
|
bcb7bdcc17 |
selftests/user_events: Test multi-format events
User_events now has multi-format events which allow for the same register name, but with different formats. When this occurs, different tracepoints are created with unique names. Add a new test that ensures the same name can be used for two different formats. Ensure they are isolated from each other and that name and arg matching still works if yet another register comes in with the same format as one of the two. Link: https://lore.kernel.org/linux-trace-kernel/20240222001807.1463-4-beaub@linux.microsoft.com Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
Ignat Korchagin
|
ba5a6476e3 |
selftests: net: veth: test the ability to independently manipulate GRO and XDP
We should be able to independently flip either XDP or GRO states and toggling one should not affect the other. Adjust other tests as well that had implicit expectation that GRO would be automatically enabled. Signed-off-by: Ignat Korchagin <ignat@cloudflare.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Linus Torvalds
|
66a27abac3 |
powerpc updates for 6.9
- Add AT_HWCAP3 and AT_HWCAP4 aux vector entries for future use by glibc. - Add support for recognising the Power11 architected and raw PVRs. - Add support for nr_cpus=n on the command line where the boot CPU is >= n. - Add ppcxx_allmodconfig targets for all 32-bit sub-arches. - Other small features, cleanups and fixes. Thanks to: Akanksha J N, Brian King, Christophe Leroy, Dawei Li, Geoff Levand, Greg Kroah-Hartman, Jan-Benedict Glaw, Kajol Jain, Kunwu Chan, Li zeming, Madhavan Srinivasan, Masahiro Yamada, Nathan Chancellor, Nicholas Piggin, Peter Bergner, Qiheng Lin, Randy Dunlap, Ricardo B. Marliere, Rob Herring, Sathvika Vasireddy, Shrikanth Hegde, Uwe Kleine-König, Vaibhav Jain, Wen Xiong. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAmX01vgTHG1wZUBlbGxl cm1hbi5pZC5hdQAKCRBR6+o8yOGlgJ4bEACVsxXXjbjl+WKgWNjHsM7sVwUX/sSV z43iVycLPXDqochSkkgKjyIEFowaWhjgWVHFHmUXWxB5FjjFEEoH4FPo3VB0IY48 VoSFT6PhzqXDrGmt2fWsJ+k6zUyJZa8pNS38DHg1yuuYDAa0KWxd3E/x/r0qzsbr vcas1uWcDWgjoUDMBuJpyx0sYTl6+mR9HlZuM4+aNQdzhTFU/jK69hAN0RFvryes K2/fLgI0fgLZpQDogCn4HV1/4uixi1eEFlVNXkwvMYDpQVo2FqiBaWLF0hNLWNCk kvm/fYIJhdFoNlp38jVKv0KJnBhW7aAs3prF+8B3YL2B23rLnvA6ZLZKHcdBAeLb 8PJMRrbAbmVxOnVSAG0fgU+0dEdkJQ+0ABqa+usMOV7xIPg9uIui1YrKT1KVq6Fs KyGHM5EQuBC/P6bTsKO6X+1beY2QIfwWxaIkoo8pj6d0WU69qU4u+LzQiDO4XR0L UQQguB1Qo8yaip3rHXhuv0hlnMNVAVye56Zw63uq1MWGkewRKSkY91Ms02L+pXpF r6+96xoFB0ulKZFnyxyBdkj2iC0426fHtTiiJFfQ4R1fiibPKtAx9P59WYnqymVh QsSYqlgC2/jWzRgqJTweLp/XQK8fWqmFkNmCGDN1N9Sij9Xjx/8aZb5dvwJkSBnK rZ4ObxBoaCPbPA== =K9Ok -----END PGP SIGNATURE----- Merge tag 'powerpc-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Add AT_HWCAP3 and AT_HWCAP4 aux vector entries for future use by glibc - Add support for recognising the Power11 architected and raw PVRs - Add support for nr_cpus=n on the command line where the boot CPU is >= n - Add ppcxx_allmodconfig targets for all 32-bit sub-arches - Other small features, cleanups and fixes Thanks to Akanksha J N, Brian King, Christophe Leroy, Dawei Li, Geoff Levand, Greg Kroah-Hartman, Jan-Benedict Glaw, Kajol Jain, Kunwu Chan, Li zeming, Madhavan Srinivasan, Masahiro Yamada, Nathan Chancellor, Nicholas Piggin, Peter Bergner, Qiheng Lin, Randy Dunlap, Ricardo B. Marliere, Rob Herring, Sathvika Vasireddy, Shrikanth Hegde, Uwe Kleine-König, Vaibhav Jain, and Wen Xiong. * tag 'powerpc-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (71 commits) powerpc/macio: Make remove callback of macio driver void returned powerpc/83xx: Fix build failure with FPU=n powerpc/64s: Fix get_hugepd_cache_index() build failure powerpc/4xx: Fix warp_gpio_leds build failure powerpc/amigaone: Make several functions static powerpc/embedded6xx: Fix no previous prototype for avr_uart_send() etc. macintosh/adb: make adb_dev_class constant powerpc: xor_vmx: Add '-mhard-float' to CFLAGS powerpc/fsl: Fix mfpmr() asm constraint error powerpc: Remove cpu-as-y completely powerpc/fsl: Modernise mt/mfpmr powerpc/fsl: Fix mfpmr build errors with newer binutils powerpc/64s: Use .machine power4 around dcbt powerpc/64s: Move dcbt/dcbtst sequence into a macro powerpc/mm: Code cleanup for __hash_page_thp powerpc/hv-gpci: Fix the H_GET_PERF_COUNTER_INFO hcall return value checks powerpc/irq: Allow softirq to hardirq stack transition powerpc: Stop using of_root powerpc/machdep: Define 'compatibles' property in ppc_md and use it of: Reimplement of_machine_is_compatible() using of_machine_compatible_match() ... |
||
Alexei Starovoitov
|
a90c5845db |
selftests/bpf: Add arena test case for 4Gbyte corner case
Check that 4Gbyte arena can be allocated and overflow/underflow access in the first and the last page behaves as expected. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Stanislav Fomichev <sdf@google.com> Link: https://lore.kernel.org/bpf/20240315021834.62988-5-alexei.starovoitov@gmail.com |
||
|
Alexei Starovoitov
|
9a2d5a966b |
selftests/bpf: Remove hard coded PAGE_SIZE macro.
Remove hard coded PAGE_SIZE. Add #include <sys/user.h> instead (that works on x86-64 and s390) and fallback to slow getpagesize() for aarch64. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Stanislav Fomichev <sdf@google.com> Link: https://lore.kernel.org/bpf/20240315021834.62988-4-alexei.starovoitov@gmail.com |
||
|
Alexei Starovoitov
|
10ebe835c9 |
libbpf, selftests/bpf: Adjust libbpf, bpftool, selftests to match LLVM
The selftests use to tell LLVM about special pointers. For LLVM there is nothing "arena" about them. They are simply pointers in a different address space. Hence LLVM diff https://github.com/llvm/llvm-project/pull/85161 renamed: . macro __BPF_FEATURE_ARENA_CAST -> __BPF_FEATURE_ADDR_SPACE_CAST . global variables in __attribute__((address_space(N))) are now placed in section named ".addr_space.N" instead of ".arena.N". Adjust libbpf, bpftool, and selftests to match LLVM. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Stanislav Fomichev <sdf@google.com> Link: https://lore.kernel.org/bpf/20240315021834.62988-3-alexei.starovoitov@gmail.com |
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|
Linus Torvalds
|
4f712ee0cb |
S390:
* Changes to FPU handling came in via the main s390 pull request
* Only deliver to the guest the SCLP events that userspace has
requested.
* More virtual vs physical address fixes (only a cleanup since
virtual and physical address spaces are currently the same).
* Fix selftests undefined behavior.
x86:
* Fix a restriction that the guest can't program a PMU event whose
encoding matches an architectural event that isn't included in the
guest CPUID. The enumeration of an architectural event only says
that if a CPU supports an architectural event, then the event can be
programmed *using the architectural encoding*. The enumeration does
NOT say anything about the encoding when the CPU doesn't report support
the event *in general*. It might support it, and it might support it
using the same encoding that made it into the architectural PMU spec.
* Fix a variety of bugs in KVM's emulation of RDPMC (more details on
individual commits) and add a selftest to verify KVM correctly emulates
RDMPC, counter availability, and a variety of other PMC-related
behaviors that depend on guest CPUID and therefore are easier to
validate with selftests than with custom guests (aka kvm-unit-tests).
* Zero out PMU state on AMD if the virtual PMU is disabled, it does not
cause any bug but it wastes time in various cases where KVM would check
if a PMC event needs to be synthesized.
* Optimize triggering of emulated events, with a nice ~10% performance
improvement in VM-Exit microbenchmarks when a vPMU is exposed to the
guest.
* Tighten the check for "PMI in guest" to reduce false positives if an NMI
arrives in the host while KVM is handling an IRQ VM-Exit.
* Fix a bug where KVM would report stale/bogus exit qualification information
when exiting to userspace with an internal error exit code.
* Add a VMX flag in /proc/cpuinfo to report 5-level EPT support.
* Rework TDP MMU root unload, free, and alloc to run with mmu_lock held for
read, e.g. to avoid serializing vCPUs when userspace deletes a memslot.
* Tear down TDP MMU page tables at 4KiB granularity (used to be 1GiB). KVM
doesn't support yielding in the middle of processing a zap, and 1GiB
granularity resulted in multi-millisecond lags that are quite impolite
for CONFIG_PREEMPT kernels.
* Allocate write-tracking metadata on-demand to avoid the memory overhead when
a kernel is built with i915 virtualization support but the workloads use
neither shadow paging nor i915 virtualization.
* Explicitly initialize a variety of on-stack variables in the emulator that
triggered KMSAN false positives.
* Fix the debugregs ABI for 32-bit KVM.
* Rework the "force immediate exit" code so that vendor code ultimately decides
how and when to force the exit, which allowed some optimization for both
Intel and AMD.
* Fix a long-standing bug where kvm_has_noapic_vcpu could be left elevated if
vCPU creation ultimately failed, causing extra unnecessary work.
* Cleanup the logic for checking if the currently loaded vCPU is in-kernel.
* Harden against underflowing the active mmu_notifier invalidation
count, so that "bad" invalidations (usually due to bugs elsehwere in the
kernel) are detected earlier and are less likely to hang the kernel.
x86 Xen emulation:
* Overlay pages can now be cached based on host virtual address,
instead of guest physical addresses. This removes the need to
reconfigure and invalidate the cache if the guest changes the
gpa but the underlying host virtual address remains the same.
* When possible, use a single host TSC value when computing the deadline for
Xen timers in order to improve the accuracy of the timer emulation.
* Inject pending upcall events when the vCPU software-enables its APIC to fix
a bug where an upcall can be lost (and to follow Xen's behavior).
* Fall back to the slow path instead of warning if "fast" IRQ delivery of Xen
events fails, e.g. if the guest has aliased xAPIC IDs.
RISC-V:
* Support exception and interrupt handling in selftests
* New self test for RISC-V architectural timer (Sstc extension)
* New extension support (Ztso, Zacas)
* Support userspace emulation of random number seed CSRs.
ARM:
* Infrastructure for building KVM's trap configuration based on the
architectural features (or lack thereof) advertised in the VM's ID
registers
* Support for mapping vfio-pci BARs as Normal-NC (vaguely similar to
x86's WC) at stage-2, improving the performance of interacting with
assigned devices that can tolerate it
* Conversion of KVM's representation of LPIs to an xarray, utilized to
address serialization some of the serialization on the LPI injection
path
* Support for _architectural_ VHE-only systems, advertised through the
absence of FEAT_E2H0 in the CPU's ID register
* Miscellaneous cleanups, fixes, and spelling corrections to KVM and
selftests
LoongArch:
* Set reserved bits as zero in CPUCFG.
* Start SW timer only when vcpu is blocking.
* Do not restart SW timer when it is expired.
* Remove unnecessary CSR register saving during enter guest.
* Misc cleanups and fixes as usual.
Generic:
* cleanup Kconfig by removing CONFIG_HAVE_KVM, which was basically always
true on all architectures except MIPS (where Kconfig determines the
available depending on CPU capabilities). It is replaced either by
an architecture-dependent symbol for MIPS, and IS_ENABLED(CONFIG_KVM)
everywhere else.
* Factor common "select" statements in common code instead of requiring
each architecture to specify it
* Remove thoroughly obsolete APIs from the uapi headers.
* Move architecture-dependent stuff to uapi/asm/kvm.h
* Always flush the async page fault workqueue when a work item is being
removed, especially during vCPU destruction, to ensure that there are no
workers running in KVM code when all references to KVM-the-module are gone,
i.e. to prevent a very unlikely use-after-free if kvm.ko is unloaded.
* Grab a reference to the VM's mm_struct in the async #PF worker itself instead
of gifting the worker a reference, so that there's no need to remember
to *conditionally* clean up after the worker.
Selftests:
* Reduce boilerplate especially when utilize selftest TAP infrastructure.
* Add basic smoke tests for SEV and SEV-ES, along with a pile of library
support for handling private/encrypted/protected memory.
* Fix benign bugs where tests neglect to close() guest_memfd files.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Paolo Bonzini:
"S390:
- Changes to FPU handling came in via the main s390 pull request
- Only deliver to the guest the SCLP events that userspace has
requested
- More virtual vs physical address fixes (only a cleanup since
virtual and physical address spaces are currently the same)
- Fix selftests undefined behavior
x86:
- Fix a restriction that the guest can't program a PMU event whose
encoding matches an architectural event that isn't included in the
guest CPUID. The enumeration of an architectural event only says
that if a CPU supports an architectural event, then the event can
be programmed *using the architectural encoding*. The enumeration
does NOT say anything about the encoding when the CPU doesn't
report support the event *in general*. It might support it, and it
might support it using the same encoding that made it into the
architectural PMU spec
- Fix a variety of bugs in KVM's emulation of RDPMC (more details on
individual commits) and add a selftest to verify KVM correctly
emulates RDMPC, counter availability, and a variety of other
PMC-related behaviors that depend on guest CPUID and therefore are
easier to validate with selftests than with custom guests (aka
kvm-unit-tests)
- Zero out PMU state on AMD if the virtual PMU is disabled, it does
not cause any bug but it wastes time in various cases where KVM
would check if a PMC event needs to be synthesized
- Optimize triggering of emulated events, with a nice ~10%
performance improvement in VM-Exit microbenchmarks when a vPMU is
exposed to the guest
- Tighten the check for "PMI in guest" to reduce false positives if
an NMI arrives in the host while KVM is handling an IRQ VM-Exit
- Fix a bug where KVM would report stale/bogus exit qualification
information when exiting to userspace with an internal error exit
code
- Add a VMX flag in /proc/cpuinfo to report 5-level EPT support
- Rework TDP MMU root unload, free, and alloc to run with mmu_lock
held for read, e.g. to avoid serializing vCPUs when userspace
deletes a memslot
- Tear down TDP MMU page tables at 4KiB granularity (used to be
1GiB). KVM doesn't support yielding in the middle of processing a
zap, and 1GiB granularity resulted in multi-millisecond lags that
are quite impolite for CONFIG_PREEMPT kernels
- Allocate write-tracking metadata on-demand to avoid the memory
overhead when a kernel is built with i915 virtualization support
but the workloads use neither shadow paging nor i915 virtualization
- Explicitly initialize a variety of on-stack variables in the
emulator that triggered KMSAN false positives
- Fix the debugregs ABI for 32-bit KVM
- Rework the "force immediate exit" code so that vendor code
ultimately decides how and when to force the exit, which allowed
some optimization for both Intel and AMD
- Fix a long-standing bug where kvm_has_noapic_vcpu could be left
elevated if vCPU creation ultimately failed, causing extra
unnecessary work
- Cleanup the logic for checking if the currently loaded vCPU is
in-kernel
- Harden against underflowing the active mmu_notifier invalidation
count, so that "bad" invalidations (usually due to bugs elsehwere
in the kernel) are detected earlier and are less likely to hang the
kernel
x86 Xen emulation:
- Overlay pages can now be cached based on host virtual address,
instead of guest physical addresses. This removes the need to
reconfigure and invalidate the cache if the guest changes the gpa
but the underlying host virtual address remains the same
- When possible, use a single host TSC value when computing the
deadline for Xen timers in order to improve the accuracy of the
timer emulation
- Inject pending upcall events when the vCPU software-enables its
APIC to fix a bug where an upcall can be lost (and to follow Xen's
behavior)
- Fall back to the slow path instead of warning if "fast" IRQ
delivery of Xen events fails, e.g. if the guest has aliased xAPIC
IDs
RISC-V:
- Support exception and interrupt handling in selftests
- New self test for RISC-V architectural timer (Sstc extension)
- New extension support (Ztso, Zacas)
- Support userspace emulation of random number seed CSRs
ARM:
- Infrastructure for building KVM's trap configuration based on the
architectural features (or lack thereof) advertised in the VM's ID
registers
- Support for mapping vfio-pci BARs as Normal-NC (vaguely similar to
x86's WC) at stage-2, improving the performance of interacting with
assigned devices that can tolerate it
- Conversion of KVM's representation of LPIs to an xarray, utilized
to address serialization some of the serialization on the LPI
injection path
- Support for _architectural_ VHE-only systems, advertised through
the absence of FEAT_E2H0 in the CPU's ID register
- Miscellaneous cleanups, fixes, and spelling corrections to KVM and
selftests
LoongArch:
- Set reserved bits as zero in CPUCFG
- Start SW timer only when vcpu is blocking
- Do not restart SW timer when it is expired
- Remove unnecessary CSR register saving during enter guest
- Misc cleanups and fixes as usual
Generic:
- Clean up Kconfig by removing CONFIG_HAVE_KVM, which was basically
always true on all architectures except MIPS (where Kconfig
determines the available depending on CPU capabilities). It is
replaced either by an architecture-dependent symbol for MIPS, and
IS_ENABLED(CONFIG_KVM) everywhere else
- Factor common "select" statements in common code instead of
requiring each architecture to specify it
- Remove thoroughly obsolete APIs from the uapi headers
- Move architecture-dependent stuff to uapi/asm/kvm.h
- Always flush the async page fault workqueue when a work item is
being removed, especially during vCPU destruction, to ensure that
there are no workers running in KVM code when all references to
KVM-the-module are gone, i.e. to prevent a very unlikely
use-after-free if kvm.ko is unloaded
- Grab a reference to the VM's mm_struct in the async #PF worker
itself instead of gifting the worker a reference, so that there's
no need to remember to *conditionally* clean up after the worker
Selftests:
- Reduce boilerplate especially when utilize selftest TAP
infrastructure
- Add basic smoke tests for SEV and SEV-ES, along with a pile of
library support for handling private/encrypted/protected memory
- Fix benign bugs where tests neglect to close() guest_memfd files"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (246 commits)
selftests: kvm: remove meaningless assignments in Makefiles
KVM: riscv: selftests: Add Zacas extension to get-reg-list test
RISC-V: KVM: Allow Zacas extension for Guest/VM
KVM: riscv: selftests: Add Ztso extension to get-reg-list test
RISC-V: KVM: Allow Ztso extension for Guest/VM
RISC-V: KVM: Forward SEED CSR access to user space
KVM: riscv: selftests: Add sstc timer test
KVM: riscv: selftests: Change vcpu_has_ext to a common function
KVM: riscv: selftests: Add guest helper to get vcpu id
KVM: riscv: selftests: Add exception handling support
LoongArch: KVM: Remove unnecessary CSR register saving during enter guest
LoongArch: KVM: Do not restart SW timer when it is expired
LoongArch: KVM: Start SW timer only when vcpu is blocking
LoongArch: KVM: Set reserved bits as zero in CPUCFG
KVM: selftests: Explicitly close guest_memfd files in some gmem tests
KVM: x86/xen: fix recursive deadlock in timer injection
KVM: pfncache: simplify locking and make more self-contained
KVM: x86/xen: remove WARN_ON_ONCE() with false positives in evtchn delivery
KVM: x86/xen: inject vCPU upcall vector when local APIC is enabled
KVM: x86/xen: improve accuracy of Xen timers
...
|
||
Palmer Dabbelt
|
07f2c040fa
|
Merge patch series "riscv: mm: Extend mappable memory up to hint address"
Charlie Jenkins <charlie@rivosinc.com> says: On riscv, mmap currently returns an address from the largest address space that can fit entirely inside of the hint address. This makes it such that the hint address is almost never returned. This patch raises the mappable area up to and including the hint address. This allows mmap to often return the hint address, which allows a performance improvement over searching for a valid address as well as making the behavior more similar to other architectures. Note that a previous patch introduced stronger semantics compared to other architectures for riscv mmap. On riscv, mmap will not use bits in the upper bits of the virtual address depending on the hint address. On other architectures, a random address is returned in the address space requested. On all architectures the hint address will be returned if it is available. This allows riscv applications to configure how many bits in the virtual address should be left empty. This has the two benefits of being able to request address spaces that are smaller than the default and doesn't require the application to know the page table layout of riscv. * b4-shazam-merge: docs: riscv: Define behavior of mmap selftests: riscv: Generalize mm selftests riscv: mm: Use hint address in mmap if available Link: https://lore.kernel.org/r/20240130-use_mmap_hint_address-v3-0-8a655cfa8bcb@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> |
||
Ricardo B. Marliere
|
07283c1873 |
ktest: force $buildonly = 1 for 'make_warnings_file' test type
The test type "make_warnings_file" should have no mandatory configuration parameters other than the ones required by the "build" test type, because its purpose is to create a file with build warnings that may or may not be used by other subsequent tests. Currently, the only way to use it as a stand-alone test is by setting POWER_CYCLE, CONSOLE, SSH_USER, BUILD_TARGET, TARGET_IMAGE, REBOOT_TYPE and GRUB_MENU. Link: https://lkml.kernel.org/r/20240315-ktest-v2-1-c5c20a75f6a3@marliere.net Cc: John Hawley <warthog9@eaglescrag.net> Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> |
||
Steven Rostedt
|
ca8edb78c1 |
ktest.pl: Process variables within variables
Allow a variable to contain another variable. This will allow the
${shell <command>} to have its command include variables.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
|
||
Colin Ian King
|
4c8644f86c |
selftests/bpf: Remove second semicolon
There are statements with two semicolons. Remove the second one, it is redundant. Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20240315092654.2431062-1-colin.i.king@gmail.com |
||
Paolo Bonzini
|
4781179012 |
selftests: kvm: remove meaningless assignments in Makefiles
$(shell ...) expands to the output of the command. It expands to the
empty string when the command does not print anything to stdout.
Hence, $(shell mkdir ...) is sufficient and does not need any
variable assignment in front of it.
Commit
|
||
|
Linus Torvalds
|
e5eb28f6d1 |
- Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min
heap optimizations". - Kuan-Wei Chiu has also sped up the library sorting code in the series "lib/sort: Optimize the number of swaps and comparisons". - Alexey Gladkov has added the ability for code running within an IPC namespace to alter its IPC and MQ limits. The series is "Allow to change ipc/mq sysctls inside ipc namespace". - Geert Uytterhoeven has contributed some dhrystone maintenance work in the series "lib: dhry: miscellaneous cleanups". - Ryusuke Konishi continues nilfs2 maintenance work in the series "nilfs2: eliminate kmap and kmap_atomic calls" "nilfs2: fix kernel bug at submit_bh_wbc()" - Nathan Chancellor has updated our build tools requirements in the series "Bump the minimum supported version of LLVM to 13.0.1". - Muhammad Usama Anjum continues with the selftests maintenance work in the series "selftests/mm: Improve run_vmtests.sh". - Oleg Nesterov has done some maintenance work against the signal code in the series "get_signal: minor cleanups and fix". Plus the usual shower of singleton patches in various parts of the tree. Please see the individual changelogs for details. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZfMnvgAKCRDdBJ7gKXxA jjKMAP4/Upq07D4wjkMVPb+QrkipbbLpdcgJ++q3z6rba4zhPQD+M3SFriIJk/Xh tKVmvihFxfAhdDthseXcIf1nBjMALwY= =8rVc -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2024-03-14-09-36' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: - Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min heap optimizations". - Kuan-Wei Chiu has also sped up the library sorting code in the series "lib/sort: Optimize the number of swaps and comparisons". - Alexey Gladkov has added the ability for code running within an IPC namespace to alter its IPC and MQ limits. The series is "Allow to change ipc/mq sysctls inside ipc namespace". - Geert Uytterhoeven has contributed some dhrystone maintenance work in the series "lib: dhry: miscellaneous cleanups". - Ryusuke Konishi continues nilfs2 maintenance work in the series "nilfs2: eliminate kmap and kmap_atomic calls" "nilfs2: fix kernel bug at submit_bh_wbc()" - Nathan Chancellor has updated our build tools requirements in the series "Bump the minimum supported version of LLVM to 13.0.1". - Muhammad Usama Anjum continues with the selftests maintenance work in the series "selftests/mm: Improve run_vmtests.sh". - Oleg Nesterov has done some maintenance work against the signal code in the series "get_signal: minor cleanups and fix". Plus the usual shower of singleton patches in various parts of the tree. Please see the individual changelogs for details. * tag 'mm-nonmm-stable-2024-03-14-09-36' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (77 commits) nilfs2: prevent kernel bug at submit_bh_wbc() nilfs2: fix failure to detect DAT corruption in btree and direct mappings ocfs2: enable ocfs2_listxattr for special files ocfs2: remove SLAB_MEM_SPREAD flag usage assoc_array: fix the return value in assoc_array_insert_mid_shortcut() buildid: use kmap_local_page() watchdog/core: remove sysctl handlers from public header nilfs2: use div64_ul() instead of do_div() mul_u64_u64_div_u64: increase precision by conditionally swapping a and b kexec: copy only happens before uchunk goes to zero get_signal: don't initialize ksig->info if SIGNAL_GROUP_EXIT/group_exec_task get_signal: hide_si_addr_tag_bits: fix the usage of uninitialized ksig get_signal: don't abuse ksig->info.si_signo and ksig->sig const_structs.checkpatch: add device_type Normalise "name (ad@dr)" MODULE_AUTHORs to "name <ad@dr>" dyndbg: replace kstrdup() + strchr() with kstrdup_and_replace() list: leverage list_is_head() for list_entry_is_head() nilfs2: MAINTAINERS: drop unreachable project mirror site smp: make __smp_processor_id() 0-argument macro fat: fix uninitialized field in nostale filehandles ... |
||
|
Linus Torvalds
|
902861e34c |
- Sumanth Korikkar has taught s390 to allocate hotplug-time page frames
from hotplugged memory rather than only from main memory. Series
"implement "memmap on memory" feature on s390".
- More folio conversions from Matthew Wilcox in the series
"Convert memcontrol charge moving to use folios"
"mm: convert mm counter to take a folio"
- Chengming Zhou has optimized zswap's rbtree locking, providing
significant reductions in system time and modest but measurable
reductions in overall runtimes. The series is "mm/zswap: optimize the
scalability of zswap rb-tree".
- Chengming Zhou has also provided the series "mm/zswap: optimize zswap
lru list" which provides measurable runtime benefits in some
swap-intensive situations.
- And Chengming Zhou further optimizes zswap in the series "mm/zswap:
optimize for dynamic zswap_pools". Measured improvements are modest.
- zswap cleanups and simplifications from Yosry Ahmed in the series "mm:
zswap: simplify zswap_swapoff()".
- In the series "Add DAX ABI for memmap_on_memory", Vishal Verma has
contributed several DAX cleanups as well as adding a sysfs tunable to
control the memmap_on_memory setting when the dax device is hotplugged
as system memory.
- Johannes Weiner has added the large series "mm: zswap: cleanups",
which does that.
- More DAMON work from SeongJae Park in the series
"mm/damon: make DAMON debugfs interface deprecation unignorable"
"selftests/damon: add more tests for core functionalities and corner cases"
"Docs/mm/damon: misc readability improvements"
"mm/damon: let DAMOS feeds and tame/auto-tune itself"
- In the series "mm/mempolicy: weighted interleave mempolicy and sysfs
extension" Rakie Kim has developed a new mempolicy interleaving policy
wherein we allocate memory across nodes in a weighted fashion rather
than uniformly. This is beneficial in heterogeneous memory environments
appearing with CXL.
- Christophe Leroy has contributed some cleanup and consolidation work
against the ARM pagetable dumping code in the series "mm: ptdump:
Refactor CONFIG_DEBUG_WX and check_wx_pages debugfs attribute".
- Luis Chamberlain has added some additional xarray selftesting in the
series "test_xarray: advanced API multi-index tests".
- Muhammad Usama Anjum has reworked the selftest code to make its
human-readable output conform to the TAP ("Test Anything Protocol")
format. Amongst other things, this opens up the use of third-party
tools to parse and process out selftesting results.
- Ryan Roberts has added fork()-time PTE batching of THP ptes in the
series "mm/memory: optimize fork() with PTE-mapped THP". Mainly
targeted at arm64, this significantly speeds up fork() when the process
has a large number of pte-mapped folios.
- David Hildenbrand also gets in on the THP pte batching game in his
series "mm/memory: optimize unmap/zap with PTE-mapped THP". It
implements batching during munmap() and other pte teardown situations.
The microbenchmark improvements are nice.
- And in the series "Transparent Contiguous PTEs for User Mappings" Ryan
Roberts further utilizes arm's pte's contiguous bit ("contpte
mappings"). Kernel build times on arm64 improved nicely. Ryan's series
"Address some contpte nits" provides some followup work.
- In the series "mm/hugetlb: Restore the reservation" Breno Leitao has
fixed an obscure hugetlb race which was causing unnecessary page faults.
He has also added a reproducer under the selftest code.
- In the series "selftests/mm: Output cleanups for the compaction test",
Mark Brown did what the title claims.
- Kinsey Ho has added the series "mm/mglru: code cleanup and refactoring".
- Even more zswap material from Nhat Pham. The series "fix and extend
zswap kselftests" does as claimed.
- In the series "Introduce cpu_dcache_is_aliasing() to fix DAX
regression" Mathieu Desnoyers has cleaned up and fixed rather a mess in
our handling of DAX on archiecctures which have virtually aliasing data
caches. The arm architecture is the main beneficiary.
- Lokesh Gidra's series "per-vma locks in userfaultfd" provides dramatic
improvements in worst-case mmap_lock hold times during certain
userfaultfd operations.
- Some page_owner enhancements and maintenance work from Oscar Salvador
in his series
"page_owner: print stacks and their outstanding allocations"
"page_owner: Fixup and cleanup"
- Uladzislau Rezki has contributed some vmalloc scalability improvements
in his series "Mitigate a vmap lock contention". It realizes a 12x
improvement for a certain microbenchmark.
- Some kexec/crash cleanup work from Baoquan He in the series "Split
crash out from kexec and clean up related config items".
- Some zsmalloc maintenance work from Chengming Zhou in the series
"mm/zsmalloc: fix and optimize objects/page migration"
"mm/zsmalloc: some cleanup for get/set_zspage_mapping()"
- Zi Yan has taught the MM to perform compaction on folios larger than
order=0. This a step along the path to implementaton of the merging of
large anonymous folios. The series is named "Enable >0 order folio
memory compaction".
- Christoph Hellwig has done quite a lot of cleanup work in the
pagecache writeback code in his series "convert write_cache_pages() to
an iterator".
- Some modest hugetlb cleanups and speedups in Vishal Moola's series
"Handle hugetlb faults under the VMA lock".
- Zi Yan has changed the page splitting code so we can split huge pages
into sizes other than order-0 to better utilize large folios. The
series is named "Split a folio to any lower order folios".
- David Hildenbrand has contributed the series "mm: remove
total_mapcount()", a cleanup.
- Matthew Wilcox has sought to improve the performance of bulk memory
freeing in his series "Rearrange batched folio freeing".
- Gang Li's series "hugetlb: parallelize hugetlb page init on boot"
provides large improvements in bootup times on large machines which are
configured to use large numbers of hugetlb pages.
- Matthew Wilcox's series "PageFlags cleanups" does that.
- Qi Zheng's series "minor fixes and supplement for ptdesc" does that
also. S390 is affected.
- Cleanups to our pagemap utility functions from Peter Xu in his series
"mm/treewide: Replace pXd_large() with pXd_leaf()".
- Nico Pache has fixed a few things with our hugepage selftests in his
series "selftests/mm: Improve Hugepage Test Handling in MM Selftests".
- Also, of course, many singleton patches to many things. Please see
the individual changelogs for details.
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Merge tag 'mm-stable-2024-03-13-20-04' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- Sumanth Korikkar has taught s390 to allocate hotplug-time page frames
from hotplugged memory rather than only from main memory. Series
"implement "memmap on memory" feature on s390".
- More folio conversions from Matthew Wilcox in the series
"Convert memcontrol charge moving to use folios"
"mm: convert mm counter to take a folio"
- Chengming Zhou has optimized zswap's rbtree locking, providing
significant reductions in system time and modest but measurable
reductions in overall runtimes. The series is "mm/zswap: optimize the
scalability of zswap rb-tree".
- Chengming Zhou has also provided the series "mm/zswap: optimize zswap
lru list" which provides measurable runtime benefits in some
swap-intensive situations.
- And Chengming Zhou further optimizes zswap in the series "mm/zswap:
optimize for dynamic zswap_pools". Measured improvements are modest.
- zswap cleanups and simplifications from Yosry Ahmed in the series
"mm: zswap: simplify zswap_swapoff()".
- In the series "Add DAX ABI for memmap_on_memory", Vishal Verma has
contributed several DAX cleanups as well as adding a sysfs tunable to
control the memmap_on_memory setting when the dax device is
hotplugged as system memory.
- Johannes Weiner has added the large series "mm: zswap: cleanups",
which does that.
- More DAMON work from SeongJae Park in the series
"mm/damon: make DAMON debugfs interface deprecation unignorable"
"selftests/damon: add more tests for core functionalities and corner cases"
"Docs/mm/damon: misc readability improvements"
"mm/damon: let DAMOS feeds and tame/auto-tune itself"
- In the series "mm/mempolicy: weighted interleave mempolicy and sysfs
extension" Rakie Kim has developed a new mempolicy interleaving
policy wherein we allocate memory across nodes in a weighted fashion
rather than uniformly. This is beneficial in heterogeneous memory
environments appearing with CXL.
- Christophe Leroy has contributed some cleanup and consolidation work
against the ARM pagetable dumping code in the series "mm: ptdump:
Refactor CONFIG_DEBUG_WX and check_wx_pages debugfs attribute".
- Luis Chamberlain has added some additional xarray selftesting in the
series "test_xarray: advanced API multi-index tests".
- Muhammad Usama Anjum has reworked the selftest code to make its
human-readable output conform to the TAP ("Test Anything Protocol")
format. Amongst other things, this opens up the use of third-party
tools to parse and process out selftesting results.
- Ryan Roberts has added fork()-time PTE batching of THP ptes in the
series "mm/memory: optimize fork() with PTE-mapped THP". Mainly
targeted at arm64, this significantly speeds up fork() when the
process has a large number of pte-mapped folios.
- David Hildenbrand also gets in on the THP pte batching game in his
series "mm/memory: optimize unmap/zap with PTE-mapped THP". It
implements batching during munmap() and other pte teardown
situations. The microbenchmark improvements are nice.
- And in the series "Transparent Contiguous PTEs for User Mappings"
Ryan Roberts further utilizes arm's pte's contiguous bit ("contpte
mappings"). Kernel build times on arm64 improved nicely. Ryan's
series "Address some contpte nits" provides some followup work.
- In the series "mm/hugetlb: Restore the reservation" Breno Leitao has
fixed an obscure hugetlb race which was causing unnecessary page
faults. He has also added a reproducer under the selftest code.
- In the series "selftests/mm: Output cleanups for the compaction
test", Mark Brown did what the title claims.
- Kinsey Ho has added the series "mm/mglru: code cleanup and
refactoring".
- Even more zswap material from Nhat Pham. The series "fix and extend
zswap kselftests" does as claimed.
- In the series "Introduce cpu_dcache_is_aliasing() to fix DAX
regression" Mathieu Desnoyers has cleaned up and fixed rather a mess
in our handling of DAX on archiecctures which have virtually aliasing
data caches. The arm architecture is the main beneficiary.
- Lokesh Gidra's series "per-vma locks in userfaultfd" provides
dramatic improvements in worst-case mmap_lock hold times during
certain userfaultfd operations.
- Some page_owner enhancements and maintenance work from Oscar Salvador
in his series
"page_owner: print stacks and their outstanding allocations"
"page_owner: Fixup and cleanup"
- Uladzislau Rezki has contributed some vmalloc scalability
improvements in his series "Mitigate a vmap lock contention". It
realizes a 12x improvement for a certain microbenchmark.
- Some kexec/crash cleanup work from Baoquan He in the series "Split
crash out from kexec and clean up related config items".
- Some zsmalloc maintenance work from Chengming Zhou in the series
"mm/zsmalloc: fix and optimize objects/page migration"
"mm/zsmalloc: some cleanup for get/set_zspage_mapping()"
- Zi Yan has taught the MM to perform compaction on folios larger than
order=0. This a step along the path to implementaton of the merging
of large anonymous folios. The series is named "Enable >0 order folio
memory compaction".
- Christoph Hellwig has done quite a lot of cleanup work in the
pagecache writeback code in his series "convert write_cache_pages()
to an iterator".
- Some modest hugetlb cleanups and speedups in Vishal Moola's series
"Handle hugetlb faults under the VMA lock".
- Zi Yan has changed the page splitting code so we can split huge pages
into sizes other than order-0 to better utilize large folios. The
series is named "Split a folio to any lower order folios".
- David Hildenbrand has contributed the series "mm: remove
total_mapcount()", a cleanup.
- Matthew Wilcox has sought to improve the performance of bulk memory
freeing in his series "Rearrange batched folio freeing".
- Gang Li's series "hugetlb: parallelize hugetlb page init on boot"
provides large improvements in bootup times on large machines which
are configured to use large numbers of hugetlb pages.
- Matthew Wilcox's series "PageFlags cleanups" does that.
- Qi Zheng's series "minor fixes and supplement for ptdesc" does that
also. S390 is affected.
- Cleanups to our pagemap utility functions from Peter Xu in his series
"mm/treewide: Replace pXd_large() with pXd_leaf()".
- Nico Pache has fixed a few things with our hugepage selftests in his
series "selftests/mm: Improve Hugepage Test Handling in MM
Selftests".
- Also, of course, many singleton patches to many things. Please see
the individual changelogs for details.
* tag 'mm-stable-2024-03-13-20-04' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (435 commits)
mm/zswap: remove the memcpy if acomp is not sleepable
crypto: introduce: acomp_is_async to expose if comp drivers might sleep
memtest: use {READ,WRITE}_ONCE in memory scanning
mm: prohibit the last subpage from reusing the entire large folio
mm: recover pud_leaf() definitions in nopmd case
selftests/mm: skip the hugetlb-madvise tests on unmet hugepage requirements
selftests/mm: skip uffd hugetlb tests with insufficient hugepages
selftests/mm: dont fail testsuite due to a lack of hugepages
mm/huge_memory: skip invalid debugfs new_order input for folio split
mm/huge_memory: check new folio order when split a folio
mm, vmscan: retry kswapd's priority loop with cache_trim_mode off on failure
mm: add an explicit smp_wmb() to UFFDIO_CONTINUE
mm: fix list corruption in put_pages_list
mm: remove folio from deferred split list before uncharging it
filemap: avoid unnecessary major faults in filemap_fault()
mm,page_owner: drop unnecessary check
mm,page_owner: check for null stack_record before bumping its refcount
mm: swap: fix race between free_swap_and_cache() and swapoff()
mm/treewide: align up pXd_leaf() retval across archs
mm/treewide: drop pXd_large()
...
|
||
|
Linus Torvalds
|
1bbeaf83dd |
perf tools changes for v6.9
perf stat
---------
* Support new 'cluster' aggregation mode for shared resources depending on the
hardware configuration.
$ sudo perf stat -a --per-cluster -e cycles,instructions sleep 1
Performance counter stats for 'system wide':
S0-D0-CLS0 2 85,051,822 cycles
S0-D0-CLS0 2 73,909,908 instructions # 0.87 insn per cycle
S0-D0-CLS2 2 93,365,918 cycles
S0-D0-CLS2 2 83,006,158 instructions # 0.89 insn per cycle
S0-D0-CLS4 2 104,157,523 cycles
S0-D0-CLS4 2 53,234,396 instructions # 0.51 insn per cycle
S0-D0-CLS6 2 65,891,079 cycles
S0-D0-CLS6 2 41,478,273 instructions # 0.63 insn per cycle
1.002407989 seconds time elapsed
* Various fixes and cleanups for event metrics including NaN handling.
perf script
-----------
* Use libcapstone if available to disassemble the instructions. This enables
'perf script -F disasm' and 'perf script --insn-trace=disasm' (for Intel-PT).
$ perf script -F event,ip,disasm
cycles:P: ffffffffa988d428 wrmsr
cycles:P: ffffffffa9839d25 movq %rax, %r14
cycles:P: ffffffffa9cdcaf0 endbr64
cycles:P: ffffffffa988d428 wrmsr
cycles:P: ffffffffa988d428 wrmsr
cycles:P: ffffffffaa401f86 iretq
cycles:P: ffffffffa99c4de5 movq 0x30(%rcx), %r8
cycles:P: ffffffffa988d428 wrmsr
cycles:P: ffffffffaa401f86 iretq
cycles:P: ffffffffa9907983 movl 0x68(%rbx), %eax
cycles:P: ffffffffa988d428 wrmsr
* Expose sample ID / stream ID to python scripts
perf test
---------
* Add more perf test cases from Redhat internal test suites. This time it adds
the base infra and a few perf probe tests. More to come. :)
* Add 'perf test -p' for parallel execution and fix some issues found by the
parallel test.
* Support symbol test to print symbols in given (active) module:
$ perf test -F -v Symbols --dso /lib/modules/$(uname -r)/kernel/fs/ext4/ext4.ko
--- start ---
Testing /lib/modules/6.5.13-1rodete2-amd64/kernel/fs/ext4/ext4.ko
Overlapping symbols:
7a990-7a9a0 l __pfx_ext4_exit_fs
7a990-7a9a0 g __pfx_cleanup_module
Overlapping symbols:
7a9a0-7aa1c l ext4_exit_fs
7a9a0-7aa1c g cleanup_module
...
JSON metric updates
-------------------
* A new round of Intel metric updates.
* Support Power11 PVR (compatible to Power10).
* Fix cache latency events on Zen 4 to set SliceId properly.
Internal
--------
* Fix reference counting for 'map' data structure, tireless work from Ian!
* More memory optimization for struct thread and annotate histogram. Now,
'perf report' (TUI) and 'perf annotate' should be much lighter-weight in
terms of memory footprint.
* Support cross-arch perf register access. Clean up the build configuration
so that it can detect arch-register support at runtime. This can allow to
parse register data in sample which was recorded in a different arch.
Others
------
* Sync task state in 'perf sched' to kernel using trace event fields. The
task states have been changed so tools cannot assume a fixed encoding.
* Clean up 'perf mem' to generalize the arch-specific events.
* Add support for local and global variables to data type profiling. This
would increase the success rate of type resolution with DWARF.
* Add short option -H for --hierarchy in 'perf report' and 'perf top'.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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Merge tag 'perf-tools-for-v6.9-2024-03-13' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf tools updates from Namhyung Kim:
"perf stat:
- Support new 'cluster' aggregation mode for shared resources
depending on the hardware configuration:
$ sudo perf stat -a --per-cluster -e cycles,instructions sleep 1
Performance counter stats for 'system wide':
S0-D0-CLS0 2 85,051,822 cycles
S0-D0-CLS0 2 73,909,908 instructions # 0.87 insn per cycle
S0-D0-CLS2 2 93,365,918 cycles
S0-D0-CLS2 2 83,006,158 instructions # 0.89 insn per cycle
S0-D0-CLS4 2 104,157,523 cycles
S0-D0-CLS4 2 53,234,396 instructions # 0.51 insn per cycle
S0-D0-CLS6 2 65,891,079 cycles
S0-D0-CLS6 2 41,478,273 instructions # 0.63 insn per cycle
1.002407989 seconds time elapsed
- Various fixes and cleanups for event metrics including NaN handling
perf script:
- Use libcapstone if available to disassemble the instructions. This
enables 'perf script -F disasm' and 'perf script --insn-trace=disasm'
(for Intel-PT):
$ perf script -F event,ip,disasm
cycles:P: ffffffffa988d428 wrmsr
cycles:P: ffffffffa9839d25 movq %rax, %r14
cycles:P: ffffffffa9cdcaf0 endbr64
cycles:P: ffffffffa988d428 wrmsr
cycles:P: ffffffffa988d428 wrmsr
cycles:P: ffffffffaa401f86 iretq
cycles:P: ffffffffa99c4de5 movq 0x30(%rcx), %r8
cycles:P: ffffffffa988d428 wrmsr
cycles:P: ffffffffaa401f86 iretq
cycles:P: ffffffffa9907983 movl 0x68(%rbx), %eax
cycles:P: ffffffffa988d428 wrmsr
- Expose sample ID / stream ID to python scripts
perf test:
- Add more perf test cases from Redhat internal test suites. This
time it adds the base infra and a few perf probe tests. More to
come. :)
- Add 'perf test -p' for parallel execution and fix some issues found
by the parallel test
- Support symbol test to print symbols in given (active) module:
$ perf test -F -v Symbols --dso /lib/modules/$(uname -r)/kernel/fs/ext4/ext4.ko
--- start ---
Testing /lib/modules/6.5.13-1rodete2-amd64/kernel/fs/ext4/ext4.ko
Overlapping symbols:
7a990-7a9a0 l __pfx_ext4_exit_fs
7a990-7a9a0 g __pfx_cleanup_module
Overlapping symbols:
7a9a0-7aa1c l ext4_exit_fs
7a9a0-7aa1c g cleanup_module
...
JSON metric updates:
- A new round of Intel metric updates
- Support Power11 PVR (compatible to Power10)
- Fix cache latency events on Zen 4 to set SliceId properly
Internal:
- Fix reference counting for 'map' data structure, tireless work from
Ian!
- More memory optimization for struct thread and annotate histogram.
Now, 'perf report' (TUI) and 'perf annotate' should be much
lighter-weight in terms of memory footprint
- Support cross-arch perf register access. Clean up the build
configuration so that it can detect arch-register support at
runtime. This can allow to parse register data in sample which was
recorded in a different arch
Others:
- Sync task state in 'perf sched' to kernel using trace event fields.
The task states have been changed so tools cannot assume a fixed
encoding
- Clean up 'perf mem' to generalize the arch-specific events
- Add support for local and global variables to data type profiling.
This would increase the success rate of type resolution with DWARF
- Add short option -H for --hierarchy in 'perf report' and 'perf top'"
* tag 'perf-tools-for-v6.9-2024-03-13' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (154 commits)
perf annotate: Add comments in the data structures
perf annotate: Remove sym_hist.addr[] array
perf annotate: Calculate instruction overhead using hashmap
perf annotate: Add a hashmap for symbol histogram
perf threads: Reduce table size from 256 to 8
perf threads: Switch from rbtree to hashmap
perf threads: Move threads to its own files
perf machine: Move machine's threads into its own abstraction
perf machine: Move fprintf to for_each loop and a callback
perf trace: Ignore thread hashing in summary
perf report: Sort child tasks by tid
perf vendor events amd: Fix Zen 4 cache latency events
perf version: Display availability of OpenCSD support
perf vendor events intel: Add umasks/occ_sel to PCU events.
perf map: Fix map reference count issues
libperf evlist: Avoid out-of-bounds access
perf lock contention: Account contending locks too
perf metrics: Fix segv for metrics with no events
perf metrics: Fix metric matching
perf pmu: Fix a potential memory leak in perf_pmu__lookup()
...
|
||
|
Linus Torvalds
|
01732755ee |
Probes updates for v6.9:
- x96/kprobes: Use boolean for some function return instead of 0 and 1.
- x86/kprobes: Prohibit probing on INT/UD. This prevents user to put kprobe on
INTn/INT1/INT3/INTO and UD0/UD1/UD2 because these are used for a special
purpose in the kernel.
- x86/kprobes: Boost Grp instructions. Because a few percent of kernel
instructions are Grp 2/3/4/5 and those are safe to be executed without
ip register fixup, allow those to be boosted (direct execution on the
trampoline buffer with a JMP).
- tracing/probes: Add function argument access from return events (kretprobe
and fprobe). This allows user to compare how a data structure field is
changed after executing a function. With BTF, return event also accepts
function argument access by name. This also includes below patches;
. Fix a wrong comment (using "Kretprobe" in fprobe)
. Cleanup a big probe argument parser function into three parts, type
parser, post-processing function, and main parser.
. Cleanup to set nr_args field when initializing trace_probe instead of
counting up it while parsing.
. Cleanup a redundant #else block from tracefs/README source code.
. Update selftests to check entry argument access from return probes.
. Documentation update about entry argument access from return probes.
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Merge tag 'probes-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes updates from Masami Hiramatsu:
"x86 kprobes:
- Use boolean for some function return instead of 0 and 1
- Prohibit probing on INT/UD. This prevents user to put kprobe on
INTn/INT1/INT3/INTO and UD0/UD1/UD2 because these are used for a
special purpose in the kernel
- Boost Grp instructions. Because a few percent of kernel
instructions are Grp 2/3/4/5 and those are safe to be executed
without ip register fixup, allow those to be boosted (direct
execution on the trampoline buffer with a JMP)
tracing:
- Add function argument access from return events (kretprobe and
fprobe). This allows user to compare how a data structure field is
changed after executing a function. With BTF, return event also
accepts function argument access by name.
- Fix a wrong comment (using "Kretprobe" in fprobe)
- Cleanup a big probe argument parser function into three parts, type
parser, post-processing function, and main parser
- Cleanup to set nr_args field when initializing trace_probe instead
of counting up it while parsing
- Cleanup a redundant #else block from tracefs/README source code
- Update selftests to check entry argument access from return probes
- Documentation update about entry argument access from return
probes"
* tag 'probes-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
Documentation: tracing: Add entry argument access at function exit
selftests/ftrace: Add test cases for entry args at function exit
tracing/probes: Support $argN in return probe (kprobe and fprobe)
tracing: Remove redundant #else block for BTF args from README
tracing/probes: cleanup: Set trace_probe::nr_args at trace_probe_init
tracing/probes: Cleanup probe argument parser
tracing/fprobe-event: cleanup: Fix a wrong comment in fprobe event
x86/kprobes: Boost more instructions from grp2/3/4/5
x86/kprobes: Prohibit kprobing on INT and UD
x86/kprobes: Refactor can_{probe,boost} return type to bool
|
||
|
Linus Torvalds
|
c0a614e82e |
lsm/stable-6.9 PR 20240314
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||
|
Linus Torvalds
|
35e886e88c |
Landlock updates for v6.9-rc1
-----BEGIN PGP SIGNATURE----- iIYEABYKAC4WIQSVyBthFV4iTW/VU1/l49DojIL20gUCZfHmqxAcbWljQGRpZ2lr b2QubmV0AAoJEOXj0OiMgvbSvbABAIUF7nujsgnE9AykjhTKzg+by86mvXK0fdLG WVW0cwfgAP49daJb8JyZP9d6PvcgDfH4vV8E7r5PFeaICPdoOwg2Bg== =xJV1 -----END PGP SIGNATURE----- Merge tag 'landlock-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux Pull landlock updates from Mickaël Salaün: "Some miscellaneous improvements, including new KUnit tests, extended documentation and boot help, and some cosmetic cleanups. Additional test changes already went through the net tree" * tag 'landlock-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux: samples/landlock: Don't error out if a file path cannot be opened landlock: Use f_cred in security_file_open() hook landlock: Rename "ptrace" files to "task" landlock: Simplify current_check_access_socket() landlock: Warn once if a Landlock action is requested while disabled landlock: Extend documentation for kernel support landlock: Add support for KUnit tests selftests/landlock: Clean up error logs related to capabilities |
||
|
Linus Torvalds
|
6d75c6f40a |
arm64 updates for 6.9:
* Reorganise the arm64 kernel VA space and add support for LPA2 (at
stage 1, KVM stage 2 was merged earlier) - 52-bit VA/PA address range
with 4KB and 16KB pages
* Enable Rust on arm64
* Support for the 2023 dpISA extensions (data processing ISA), host only
* arm64 perf updates:
- StarFive's StarLink (integrates one or more CPU cores with a shared
L3 memory system) PMU support
- Enable HiSilicon Erratum 162700402 quirk for HIP09
- Several updates for the HiSilicon PCIe PMU driver
- Arm CoreSight PMU support
- Convert all drivers under drivers/perf/ to use .remove_new()
* Miscellaneous:
- Don't enable workarounds for "rare" errata by default
- Clean up the DAIF flags handling for EL0 returns (in preparation for
NMI support)
- Kselftest update for ptrace()
- Update some of the sysreg field definitions
- Slight improvement in the code generation for inline asm I/O
accessors to permit offset addressing
- kretprobes: acquire regs via a BRK exception (previously done via a
trampoline handler)
- SVE/SME cleanups, comment updates
- Allow CALL_OPS+CC_OPTIMIZE_FOR_SIZE with clang (previously disabled
due to gcc silently ignoring -falign-functions=N)
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"The major features are support for LPA2 (52-bit VA/PA with 4K and 16K
pages), the dpISA extension and Rust enabled on arm64. The changes are
mostly contained within the usual arch/arm64/, drivers/perf, the arm64
Documentation and kselftests. The exception is the Rust support which
touches some generic build files.
Summary:
- Reorganise the arm64 kernel VA space and add support for LPA2 (at
stage 1, KVM stage 2 was merged earlier) - 52-bit VA/PA address
range with 4KB and 16KB pages
- Enable Rust on arm64
- Support for the 2023 dpISA extensions (data processing ISA), host
only
- arm64 perf updates:
- StarFive's StarLink (integrates one or more CPU cores with a
shared L3 memory system) PMU support
- Enable HiSilicon Erratum 162700402 quirk for HIP09
- Several updates for the HiSilicon PCIe PMU driver
- Arm CoreSight PMU support
- Convert all drivers under drivers/perf/ to use .remove_new()
- Miscellaneous:
- Don't enable workarounds for "rare" errata by default
- Clean up the DAIF flags handling for EL0 returns (in preparation
for NMI support)
- Kselftest update for ptrace()
- Update some of the sysreg field definitions
- Slight improvement in the code generation for inline asm I/O
accessors to permit offset addressing
- kretprobes: acquire regs via a BRK exception (previously done
via a trampoline handler)
- SVE/SME cleanups, comment updates
- Allow CALL_OPS+CC_OPTIMIZE_FOR_SIZE with clang (previously
disabled due to gcc silently ignoring -falign-functions=N)"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (134 commits)
Revert "mm: add arch hook to validate mmap() prot flags"
Revert "arm64: mm: add support for WXN memory translation attribute"
Revert "ARM64: Dynamically allocate cpumasks and increase supported CPUs to 512"
ARM64: Dynamically allocate cpumasks and increase supported CPUs to 512
kselftest/arm64: Add 2023 DPISA hwcap test coverage
kselftest/arm64: Add basic FPMR test
kselftest/arm64: Handle FPMR context in generic signal frame parser
arm64/hwcap: Define hwcaps for 2023 DPISA features
arm64/ptrace: Expose FPMR via ptrace
arm64/signal: Add FPMR signal handling
arm64/fpsimd: Support FEAT_FPMR
arm64/fpsimd: Enable host kernel access to FPMR
arm64/cpufeature: Hook new identification registers up to cpufeature
docs: perf: Fix build warning of hisi-pcie-pmu.rst
perf: starfive: Only allow COMPILE_TEST for 64-bit architectures
MAINTAINERS: Add entry for StarFive StarLink PMU
docs: perf: Add description for StarFive's StarLink PMU
dt-bindings: perf: starfive: Add JH8100 StarLink PMU
perf: starfive: Add StarLink PMU support
docs: perf: Update usage for target filter of hisi-pcie-pmu
...
|
||
Kui-Feng Lee
|
26a7cf2bbe |
selftests/bpf: Ensure libbpf skip all-zeros fields of struct_ops maps.
A new version of a type may have additional fields that do not exist in older versions. Previously, libbpf would reject struct_ops maps with a new version containing extra fields when running on a machine with an old kernel. However, we have updated libbpf to ignore these fields if their values are all zeros or null in order to provide backward compatibility. Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20240313214139.685112-3-thinker.li@gmail.com |
||
|
Kui-Feng Lee
|
c2a0257c1e |
bpftool: Cast pointers for shadow types explicitly.
According to a report, skeletons fail to assign shadow pointers when being compiled with C++ programs. Unlike C doing implicit casting for void pointers, C++ requires an explicit casting. To support C++, we do explicit casting for each shadow pointer. Also add struct_ops_module.skel.h to test_cpp to validate C++ compilation as part of BPF selftests. Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Yonghong Song <yonghong.song@linux.dev> Acked-by: Quentin Monnet <quentin@isovalent.com> Link: https://lore.kernel.org/bpf/20240312013726.1780720-1-thinker.li@gmail.com |
||
|
Paolo Bonzini
|
17193ced2d |
- Memop selftest rotate fix
- SCLP event bits over indication fix - Missing virt_to_phys for the CRYCB fix -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEwGNS88vfc9+v45Yq41TmuOI4ufgFAmXcfYoACgkQ41TmuOI4 ufhPExAAxdcg3WjnTe/EYe+GnyjKo3nZs4y9dhZk9gf06qEYEawhg0ug5akzRZIH SDKeFqOXzl/ZRuL5hvfYBzxpy+IR3rWAYhBKUyxR6aJBl+RZKlf+Xn7l8iIKbNDq vAtLh9Hqza5IJiw/jtorw90TmiHDKvMlvft4UMG3t1IppyktUuuH0aujaVpeKtMR 8qVyGsaTmNHip6Pi7w3WUnvYPkMNLoM7UIPhBAvWrJyYrLxao8pKEGWHaKwbMNHL Om4bjykfFCZ1Cs9aLZDLEasuD61Fpp41DnvImYm77yuDOdI4WalIlV7F5NbjQhhd IrQdsmlZc+N+HKcYvia6MnzAChTpo25pynvW7xXFQIfl/9VxcMFAfSLqLZMGMKFC IwzwI+BA3+bgw6zbN2z2uBShIom7Zzr689U8mbt5q7JborOH38qd5+IX6QFwUtTv IPHrgcULdWHWT5TRaIp61cB9YzCx2YU1QrMWEUVehldQqGEt8ANdZU5Ov0KG1BVl L9ULBIEnJ2ib1pGA7Xlxl2U0Lr2w/dg/p7EAdnOGes50GfEwEjtBzb7VO9Xfrz/Z j927hQO354Y8OYRFjKDjTceENynCiYsbNEhTHE6qFRIwAmeSVk4PT+vIXO6wZlZi Ee3LxsvVUnhYuC7sZbBUNhyiEjNn6GG3LxAtPeDoD+HvhqXI2Qg= =bwck -----END PGP SIGNATURE----- Merge tag 'kvm-s390-next-6.9-1' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD - Memop selftest rotate fix - SCLP event bits over indication fix - Missing virt_to_phys for the CRYCB fix |
||
Charlie Jenkins
|
73d05262a2
|
selftests: riscv: Generalize mm selftests
The behavior of mmap on riscv is defined to not provide an address that uses more bits than the hint address, if provided. Make the tests reflect that. Signed-off-by: Charlie Jenkins <charlie@rivosinc.com> Link: https://lore.kernel.org/r/20240130-use_mmap_hint_address-v3-2-8a655cfa8bcb@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> |
||
Casey Schaufler
|
a5a858f622 |
lsm: use 32-bit compatible data types in LSM syscalls
Change the size parameters in lsm_list_modules(), lsm_set_self_attr() and lsm_get_self_attr() from size_t to u32. This avoids the need to have different interfaces for 32 and 64 bit systems. Cc: stable@vger.kernel.org Fixes: |
||
Muhammad Usama Anjum
|
1d0e51b24c |
selftests/exec: recursion-depth: conform test to TAP format output
Conform the layout, informational and status messages to TAP. No functional change is intended other than the layout of output messages. While at it, do minor cleanups like move the declarations of the variables on top of the function. Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com> Link: https://lore.kernel.org/r/20240304155928.1818928-3-usama.anjum@collabora.com Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Muhammad Usama Anjum
|
c409506773 |
selftests/exec: load_address: conform test to TAP format output
Conform the layout, informational and status messages to TAP. No functional change is intended other than the layout of output messages. Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com> Link: https://lore.kernel.org/r/20240304155928.1818928-2-usama.anjum@collabora.com Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Muhammad Usama Anjum
|
99f5819bee |
selftests/exec: binfmt_script: Add the overall result line according to TAP
The following line is missing from the test's execution. Add it to make it fully TAP conformant: # Totals: pass:27 fail:0 xfail:0 xpass:0 skip:0 error:0 Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20240304155928.1818928-1-usama.anjum@collabora.com Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Linus Torvalds
|
69afef4af4 |
gpio updates for v6.9
Serialization rework:
- use SRCU to serialize access to the global GPIO device list, to GPIO device
structs themselves and to GPIO descriptors
- make the GPIO subsystem resilient to the GPIO providers being unbound while
the API calls are in progress
- don't dereference the SRCU-protected chip pointer if the information we need
can be obtained from the GPIO device structure
- move some of the information contained in struct gpio_chip to struct
gpio_device to further reduce the need to dereference the former
- pass the GPIO device struct instead of the GPIO chip to sysfs callback to,
again, reduce the need for accessing the latter
- get GPIO descriptors from the GPIO device, not from the chip for the same
reason
- allow for mostly lockless operation of the GPIO driver API: assure
consistency with SRCU and atomic operations
- remove the global GPIO spinlock
- remove the character device RW semaphore
Core GPIOLIB:
- constify pointers in GPIO API where applicable
- unify the GPIO counting APIs for ACPI and OF
- provide a macro for iterating over all GPIOs, not only the ones that are
requested
- remove leftover typedefs
- pass the consumer device to GPIO core in devm_fwnode_gpiod_get_index() for
improved logging
- constify the GPIO bus type
- don't warn about removing GPIO chips with descriptors still held by users as
we can now handle this situation gracefully
- remove unused logging helpers
- unexport functions that are only used internally in the GPIO subsystem
- set the device type (assign the relevant struct device_type) for GPIO devices
New drivers:
- add the ChromeOS EC GPIO driver
Driver improvements:
- allow building gpio-vf610 with COMPILE_TEST as well as disabling it in
menuconfig (before it was always built for i.MX cofigs)
- count the number of EICs using the device properties instead of hard-coding
it in gpio-eic-sprd
- improve the device naming, extend the debugfs output and add lockdep asserts
to gpio-sim
DT bindings:
- document the 'label' property for gpio-pca9570
- convert aspeed,ast2400-gpio bindings to DT schema
- disallow unevaluated properties for gpio-mvebu
- document a new model in renesas,rcar-gpio
Documentation:
- improve the character device kerneldocs in user-space headers
- add proper documentation for the character device uAPI (both v1 and v2)
- move the sysfs and gpio-mockup docs into the "obsolete" section
- improve naming consistency for GPIO terms
- clarify the line values description for sysfs
- minor docs improvements
- improve the driver API contract for setting GPIO direction
- mark unsafe APIs as deprecated in kerneldocs and suggest replacements
Other:
- remove an obsolete test from selftests
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Merge tag 'gpio-updates-for-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"The biggest feature is the locking overhaul. Up until now the
synchronization in the GPIO subsystem was broken. There was a single
spinlock "protecting" multiple data structures but doing it wrong (as
evidenced by several places where it would be released when a sleeping
function was called and then reacquired without checking the protected
state).
We tried to use an RW semaphore before but the main issue with GPIO is
that we have drivers implementing the interfaces in both sleeping and
non-sleeping ways as well as user-facing interfaces that can be called
both from process as well as atomic contexts. Both ends converge in
the same code paths that can use neither spinlocks nor mutexes. The
only reasonable way out is to use SRCU and go mostly lockless. To that
end: we add several SRCU structs in relevant places and use them to
assure consistency between API calls together with atomic reads and
writes of GPIO descriptor flags where it makes sense.
This code has spent several weeks in next and has received several
fixes in the first week or two after which it stabilized nicely. The
GPIO subsystem is now resilient to providers being suddenly unbound.
We managed to also remove the existing character device RW semaphore
and the obsolete global spinlock.
Other than the locking rework we have one new driver (for Chromebook
EC), much appreciated documentation improvements from Kent and the
regular driver improvements, DT-bindings updates and GPIOLIB core
tweaks.
Serialization rework:
- use SRCU to serialize access to the global GPIO device list, to
GPIO device structs themselves and to GPIO descriptors
- make the GPIO subsystem resilient to the GPIO providers being
unbound while the API calls are in progress
- don't dereference the SRCU-protected chip pointer if the
information we need can be obtained from the GPIO device structure
- move some of the information contained in struct gpio_chip to
struct gpio_device to further reduce the need to dereference the
former
- pass the GPIO device struct instead of the GPIO chip to sysfs
callback to, again, reduce the need for accessing the latter
- get GPIO descriptors from the GPIO device, not from the chip for
the same reason
- allow for mostly lockless operation of the GPIO driver API: assure
consistency with SRCU and atomic operations
- remove the global GPIO spinlock
- remove the character device RW semaphore
Core GPIOLIB:
- constify pointers in GPIO API where applicable
- unify the GPIO counting APIs for ACPI and OF
- provide a macro for iterating over all GPIOs, not only the ones
that are requested
- remove leftover typedefs
- pass the consumer device to GPIO core in
devm_fwnode_gpiod_get_index() for improved logging
- constify the GPIO bus type
- don't warn about removing GPIO chips with descriptors still held by
users as we can now handle this situation gracefully
- remove unused logging helpers
- unexport functions that are only used internally in the GPIO
subsystem
- set the device type (assign the relevant struct device_type) for
GPIO devices
New drivers:
- add the ChromeOS EC GPIO driver
Driver improvements:
- allow building gpio-vf610 with COMPILE_TEST as well as disabling it
in menuconfig (before it was always built for i.MX cofigs)
- count the number of EICs using the device properties instead of
hard-coding it in gpio-eic-sprd
- improve the device naming, extend the debugfs output and add
lockdep asserts to gpio-sim
DT bindings:
- document the 'label' property for gpio-pca9570
- convert aspeed,ast2400-gpio bindings to DT schema
- disallow unevaluated properties for gpio-mvebu
- document a new model in renesas,rcar-gpio
Documentation:
- improve the character device kerneldocs in user-space headers
- add proper documentation for the character device uAPI (both v1 and v2)
- move the sysfs and gpio-mockup docs into the "obsolete" section
- improve naming consistency for GPIO terms
- clarify the line values description for sysfs
- minor docs improvements
- improve the driver API contract for setting GPIO direction
- mark unsafe APIs as deprecated in kerneldocs and suggest
replacements
Other:
- remove an obsolete test from selftests"
* tag 'gpio-updates-for-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (79 commits)
gpio: sysfs: repair export returning -EPERM on 1st attempt
selftest: gpio: remove obsolete gpio-mockup test
gpiolib: Deduplicate cleanup for-loop in gpiochip_add_data_with_key()
dt-bindings: gpio: aspeed,ast2400-gpio: Convert to DT schema
gpio: acpi: Make acpi_gpio_count() take firmware node as a parameter
gpio: of: Make of_gpio_get_count() take firmware node as a parameter
gpiolib: Pass consumer device through to core in devm_fwnode_gpiod_get_index()
gpio: sim: use for_each_hwgpio()
gpio: provide for_each_hwgpio()
gpio: don't warn about removing GPIO chips with active users anymore
gpio: sim: delimit the fwnode name with a ":" when generating labels
gpio: sim: add lockdep asserts
gpio: Add ChromeOS EC GPIO driver
gpio: constify of_phandle_args in of_find_gpio_device_by_xlate()
gpio: fix memory leak in gpiod_request_commit()
gpio: constify opaque pointer "data" in gpio_device_find()
gpio: cdev: fix a NULL-pointer dereference with DEBUG enabled
gpio: uapi: clarify default_values being logical
gpio: sysfs: fix inverted pointer logic
gpio: don't let lockdep complain about inherently dangerous RCU usage
...
|
||
|
Linus Torvalds
|
cc4a875cf3 |
lsm/stable-6.9 PR 20240312
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||
|
Linus Torvalds
|
9187210eee |
Networking changes for 6.9.
Core & protocols
----------------
- Large effort by Eric to lower rtnl_lock pressure and remove locks:
- Make commonly used parts of rtnetlink (address, route dumps etc.)
lockless, protected by RCU instead of rtnl_lock.
- Add a netns exit callback which already holds rtnl_lock,
allowing netns exit to take rtnl_lock once in the core
instead of once for each driver / callback.
- Remove locks / serialization in the socket diag interface.
- Remove 6 calls to synchronize_rcu() while holding rtnl_lock.
- Remove the dev_base_lock, depend on RCU where necessary.
- Support busy polling on a per-epoll context basis. Poll length
and budget parameters can be set independently of system defaults.
- Introduce struct net_hotdata, to make sure read-mostly global config
variables fit in as few cache lines as possible.
- Add optional per-nexthop statistics to ease monitoring / debug
of ECMP imbalance problems.
- Support TCP_NOTSENT_LOWAT in MPTCP.
- Ensure that IPv6 temporary addresses' preferred lifetimes are long
enough, compared to other configured lifetimes, and at least 2 sec.
- Support forwarding of ICMP Error messages in IPSec, per RFC 4301.
- Add support for the independent control state machine for bonding
per IEEE 802.1AX-2008 5.4.15 in addition to the existing coupled
control state machine.
- Add "network ID" to MCTP socket APIs to support hosts with multiple
disjoint MCTP networks.
- Re-use the mono_delivery_time skbuff bit for packets which user
space wants to be sent at a specified time. Maintain the timing
information while traversing veth links, bridge etc.
- Take advantage of MSG_SPLICE_PAGES for RxRPC DATA and ACK packets.
- Simplify many places iterating over netdevs by using an xarray
instead of a hash table walk (hash table remains in place, for
use on fastpaths).
- Speed up scanning for expired routes by keeping a dedicated list.
- Speed up "generic" XDP by trying harder to avoid large allocations.
- Support attaching arbitrary metadata to netconsole messages.
Things we sprinkled into general kernel code
--------------------------------------------
- Enforce VM_IOREMAP flag and range in ioremap_page_range and introduce
VM_SPARSE kind and vm_area_[un]map_pages (used by bpf_arena).
- Rework selftest harness to enable the use of the full range of
ksft exit code (pass, fail, skip, xfail, xpass).
Netfilter
---------
- Allow userspace to define a table that is exclusively owned by a daemon
(via netlink socket aliveness) without auto-removing this table when
the userspace program exits. Such table gets marked as orphaned and
a restarting management daemon can re-attach/regain ownership.
- Speed up element insertions to nftables' concatenated-ranges set type.
Compact a few related data structures.
BPF
---
- Add BPF token support for delegating a subset of BPF subsystem
functionality from privileged system-wide daemons such as systemd
through special mount options for userns-bound BPF fs to a trusted
& unprivileged application.
- Introduce bpf_arena which is sparse shared memory region between BPF
program and user space where structures inside the arena can have
pointers to other areas of the arena, and pointers work seamlessly
for both user-space programs and BPF programs.
- Introduce may_goto instruction that is a contract between the verifier
and the program. The verifier allows the program to loop assuming it's
behaving well, but reserves the right to terminate it.
- Extend the BPF verifier to enable static subprog calls in spin lock
critical sections.
- Support registration of struct_ops types from modules which helps
projects like fuse-bpf that seeks to implement a new struct_ops type.
- Add support for retrieval of cookies for perf/kprobe multi links.
- Support arbitrary TCP SYN cookie generation / validation in the TC
layer with BPF to allow creating SYN flood handling in BPF firewalls.
- Add code generation to inline the bpf_kptr_xchg() helper which
improves performance when stashing/popping the allocated BPF objects.
Wireless
--------
- Add SPP (signaling and payload protected) AMSDU support.
- Support wider bandwidth OFDMA, as required for EHT operation.
Driver API
----------
- Major overhaul of the Energy Efficient Ethernet internals to support
new link modes (2.5GE, 5GE), share more code between drivers
(especially those using phylib), and encourage more uniform behavior.
Convert and clean up drivers.
- Define an API for querying per netdev queue statistics from drivers.
- IPSec: account in global stats for fully offloaded sessions.
- Create a concept of Ethernet PHY Packages at the Device Tree level,
to allow parameterizing the existing PHY package code.
- Enable Rx hashing (RSS) on GTP protocol fields.
Misc
----
- Improvements and refactoring all over networking selftests.
- Create uniform module aliases for TC classifiers, actions,
and packet schedulers to simplify creating modprobe policies.
- Address all missing MODULE_DESCRIPTION() warnings in networking.
- Extend the Netlink descriptions in YAML to cover message encapsulation
or "Netlink polymorphism", where interpretation of nested attributes
depends on link type, classifier type or some other "class type".
Drivers
-------
- Ethernet high-speed NICs:
- Add a new driver for Marvell's Octeon PCI Endpoint NIC VF.
- Intel (100G, ice, idpf):
- support E825-C devices
- nVidia/Mellanox:
- support devices with one port and multiple PCIe links
- Broadcom (bnxt):
- support n-tuple filters
- support configuring the RSS key
- Wangxun (ngbe/txgbe):
- implement irq_domain for TXGBE's sub-interrupts
- Pensando/AMD:
- support XDP
- optimize queue submission and wakeup handling (+17% bps)
- optimize struct layout, saving 28% of memory on queues
- Ethernet NICs embedded and virtual:
- Google cloud vNIC:
- refactor driver to perform memory allocations for new queue
config before stopping and freeing the old queue memory
- Synopsys (stmmac):
- obey queueMaxSDU and implement counters required by 802.1Qbv
- Renesas (ravb):
- support packet checksum offload
- suspend to RAM and runtime PM support
- Ethernet switches:
- nVidia/Mellanox:
- support for nexthop group statistics
- Microchip:
- ksz8: implement PHY loopback
- add support for KSZ8567, a 7-port 10/100Mbps switch
- PTP:
- New driver for RENESAS FemtoClock3 Wireless clock generator.
- Support OCP PTP cards designed and built by Adva.
- CAN:
- Support recvmsg() flags for own, local and remote traffic
on CAN BCM sockets.
- Support for esd GmbH PCIe/402 CAN device family.
- m_can:
- Rx/Tx submission coalescing
- wake on frame Rx
- WiFi:
- Intel (iwlwifi):
- enable signaling and payload protected A-MSDUs
- support wider-bandwidth OFDMA
- support for new devices
- bump FW API to 89 for AX devices; 90 for BZ/SC devices
- MediaTek (mt76):
- mt7915: newer ADIE version support
- mt7925: radio temperature sensor support
- Qualcomm (ath11k):
- support 6 GHz station power modes: Low Power Indoor (LPI),
Standard Power) SP and Very Low Power (VLP)
- QCA6390 & WCN6855: support 2 concurrent station interfaces
- QCA2066 support
- Qualcomm (ath12k):
- refactoring in preparation for Multi-Link Operation (MLO) support
- 1024 Block Ack window size support
- firmware-2.bin support
- support having multiple identical PCI devices (firmware needs to
have ATH12K_FW_FEATURE_MULTI_QRTR_ID)
- QCN9274: support split-PHY devices
- WCN7850: enable Power Save Mode in station mode
- WCN7850: P2P support
- RealTek:
- rtw88: support for more rtw8811cu and rtw8821cu devices
- rtw89: support SCAN_RANDOM_SN and SET_SCAN_DWELL
- rtlwifi: speed up USB firmware initialization
- rtwl8xxxu:
- RTL8188F: concurrent interface support
- Channel Switch Announcement (CSA) support in AP mode
- Broadcom (brcmfmac):
- per-vendor feature support
- per-vendor SAE password setup
- DMI nvram filename quirk for ACEPC W5 Pro
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core & protocols:
- Large effort by Eric to lower rtnl_lock pressure and remove locks:
- Make commonly used parts of rtnetlink (address, route dumps
etc) lockless, protected by RCU instead of rtnl_lock.
- Add a netns exit callback which already holds rtnl_lock,
allowing netns exit to take rtnl_lock once in the core instead
of once for each driver / callback.
- Remove locks / serialization in the socket diag interface.
- Remove 6 calls to synchronize_rcu() while holding rtnl_lock.
- Remove the dev_base_lock, depend on RCU where necessary.
- Support busy polling on a per-epoll context basis. Poll length and
budget parameters can be set independently of system defaults.
- Introduce struct net_hotdata, to make sure read-mostly global
config variables fit in as few cache lines as possible.
- Add optional per-nexthop statistics to ease monitoring / debug of
ECMP imbalance problems.
- Support TCP_NOTSENT_LOWAT in MPTCP.
- Ensure that IPv6 temporary addresses' preferred lifetimes are long
enough, compared to other configured lifetimes, and at least 2 sec.
- Support forwarding of ICMP Error messages in IPSec, per RFC 4301.
- Add support for the independent control state machine for bonding
per IEEE 802.1AX-2008 5.4.15 in addition to the existing coupled
control state machine.
- Add "network ID" to MCTP socket APIs to support hosts with multiple
disjoint MCTP networks.
- Re-use the mono_delivery_time skbuff bit for packets which user
space wants to be sent at a specified time. Maintain the timing
information while traversing veth links, bridge etc.
- Take advantage of MSG_SPLICE_PAGES for RxRPC DATA and ACK packets.
- Simplify many places iterating over netdevs by using an xarray
instead of a hash table walk (hash table remains in place, for use
on fastpaths).
- Speed up scanning for expired routes by keeping a dedicated list.
- Speed up "generic" XDP by trying harder to avoid large allocations.
- Support attaching arbitrary metadata to netconsole messages.
Things we sprinkled into general kernel code:
- Enforce VM_IOREMAP flag and range in ioremap_page_range and
introduce VM_SPARSE kind and vm_area_[un]map_pages (used by
bpf_arena).
- Rework selftest harness to enable the use of the full range of ksft
exit code (pass, fail, skip, xfail, xpass).
Netfilter:
- Allow userspace to define a table that is exclusively owned by a
daemon (via netlink socket aliveness) without auto-removing this
table when the userspace program exits. Such table gets marked as
orphaned and a restarting management daemon can re-attach/regain
ownership.
- Speed up element insertions to nftables' concatenated-ranges set
type. Compact a few related data structures.
BPF:
- Add BPF token support for delegating a subset of BPF subsystem
functionality from privileged system-wide daemons such as systemd
through special mount options for userns-bound BPF fs to a trusted
& unprivileged application.
- Introduce bpf_arena which is sparse shared memory region between
BPF program and user space where structures inside the arena can
have pointers to other areas of the arena, and pointers work
seamlessly for both user-space programs and BPF programs.
- Introduce may_goto instruction that is a contract between the
verifier and the program. The verifier allows the program to loop
assuming it's behaving well, but reserves the right to terminate
it.
- Extend the BPF verifier to enable static subprog calls in spin lock
critical sections.
- Support registration of struct_ops types from modules which helps
projects like fuse-bpf that seeks to implement a new struct_ops
type.
- Add support for retrieval of cookies for perf/kprobe multi links.
- Support arbitrary TCP SYN cookie generation / validation in the TC
layer with BPF to allow creating SYN flood handling in BPF
firewalls.
- Add code generation to inline the bpf_kptr_xchg() helper which
improves performance when stashing/popping the allocated BPF
objects.
Wireless:
- Add SPP (signaling and payload protected) AMSDU support.
- Support wider bandwidth OFDMA, as required for EHT operation.
Driver API:
- Major overhaul of the Energy Efficient Ethernet internals to
support new link modes (2.5GE, 5GE), share more code between
drivers (especially those using phylib), and encourage more
uniform behavior. Convert and clean up drivers.
- Define an API for querying per netdev queue statistics from
drivers.
- IPSec: account in global stats for fully offloaded sessions.
- Create a concept of Ethernet PHY Packages at the Device Tree level,
to allow parameterizing the existing PHY package code.
- Enable Rx hashing (RSS) on GTP protocol fields.
Misc:
- Improvements and refactoring all over networking selftests.
- Create uniform module aliases for TC classifiers, actions, and
packet schedulers to simplify creating modprobe policies.
- Address all missing MODULE_DESCRIPTION() warnings in networking.
- Extend the Netlink descriptions in YAML to cover message
encapsulation or "Netlink polymorphism", where interpretation of
nested attributes depends on link type, classifier type or some
other "class type".
Drivers:
- Ethernet high-speed NICs:
- Add a new driver for Marvell's Octeon PCI Endpoint NIC VF.
- Intel (100G, ice, idpf):
- support E825-C devices
- nVidia/Mellanox:
- support devices with one port and multiple PCIe links
- Broadcom (bnxt):
- support n-tuple filters
- support configuring the RSS key
- Wangxun (ngbe/txgbe):
- implement irq_domain for TXGBE's sub-interrupts
- Pensando/AMD:
- support XDP
- optimize queue submission and wakeup handling (+17% bps)
- optimize struct layout, saving 28% of memory on queues
- Ethernet NICs embedded and virtual:
- Google cloud vNIC:
- refactor driver to perform memory allocations for new queue
config before stopping and freeing the old queue memory
- Synopsys (stmmac):
- obey queueMaxSDU and implement counters required by 802.1Qbv
- Renesas (ravb):
- support packet checksum offload
- suspend to RAM and runtime PM support
- Ethernet switches:
- nVidia/Mellanox:
- support for nexthop group statistics
- Microchip:
- ksz8: implement PHY loopback
- add support for KSZ8567, a 7-port 10/100Mbps switch
- PTP:
- New driver for RENESAS FemtoClock3 Wireless clock generator.
- Support OCP PTP cards designed and built by Adva.
- CAN:
- Support recvmsg() flags for own, local and remote traffic on CAN
BCM sockets.
- Support for esd GmbH PCIe/402 CAN device family.
- m_can:
- Rx/Tx submission coalescing
- wake on frame Rx
- WiFi:
- Intel (iwlwifi):
- enable signaling and payload protected A-MSDUs
- support wider-bandwidth OFDMA
- support for new devices
- bump FW API to 89 for AX devices; 90 for BZ/SC devices
- MediaTek (mt76):
- mt7915: newer ADIE version support
- mt7925: radio temperature sensor support
- Qualcomm (ath11k):
- support 6 GHz station power modes: Low Power Indoor (LPI),
Standard Power) SP and Very Low Power (VLP)
- QCA6390 & WCN6855: support 2 concurrent station interfaces
- QCA2066 support
- Qualcomm (ath12k):
- refactoring in preparation for Multi-Link Operation (MLO)
support
- 1024 Block Ack window size support
- firmware-2.bin support
- support having multiple identical PCI devices (firmware needs
to have ATH12K_FW_FEATURE_MULTI_QRTR_ID)
- QCN9274: support split-PHY devices
- WCN7850: enable Power Save Mode in station mode
- WCN7850: P2P support
- RealTek:
- rtw88: support for more rtw8811cu and rtw8821cu devices
- rtw89: support SCAN_RANDOM_SN and SET_SCAN_DWELL
- rtlwifi: speed up USB firmware initialization
- rtwl8xxxu:
- RTL8188F: concurrent interface support
- Channel Switch Announcement (CSA) support in AP mode
- Broadcom (brcmfmac):
- per-vendor feature support
- per-vendor SAE password setup
- DMI nvram filename quirk for ACEPC W5 Pro"
* tag 'net-next-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2255 commits)
nexthop: Fix splat with CONFIG_DEBUG_PREEMPT=y
nexthop: Fix out-of-bounds access during attribute validation
nexthop: Only parse NHA_OP_FLAGS for dump messages that require it
nexthop: Only parse NHA_OP_FLAGS for get messages that require it
bpf: move sleepable flag from bpf_prog_aux to bpf_prog
bpf: hardcode BPF_PROG_PACK_SIZE to 2MB * num_possible_nodes()
selftests/bpf: Add kprobe multi triggering benchmarks
ptp: Move from simple ida to xarray
vxlan: Remove generic .ndo_get_stats64
vxlan: Do not alloc tstats manually
devlink: Add comments to use netlink gen tool
nfp: flower: handle acti_netdevs allocation failure
net/packet: Add getsockopt support for PACKET_COPY_THRESH
net/netlink: Add getsockopt support for NETLINK_LISTEN_ALL_NSID
selftests/bpf: Add bpf_arena_htab test.
selftests/bpf: Add bpf_arena_list test.
selftests/bpf: Add unit tests for bpf_arena_alloc/free_pages
bpf: Add helper macro bpf_addr_space_cast()
libbpf: Recognize __arena global variables.
bpftool: Recognize arena map type
...
|
||
|
Linus Torvalds
|
7f1a277409 |
seccomp updates for v6.9-rc1
- Improve reliability of selftests (Terry Tritton, Kees Cook) - Fix strict-aliasing warning in samples (Arnd Bergmann) -----BEGIN PGP SIGNATURE----- iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmXvlj8WHGtlZXNjb29r QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJs6fD/9jcb5/9RNObVjSb19XSDfmlm6t +0u+aHKBZCuIu8WgrlU2rtMUJ8BiiWKVQIOViIJJJ6xz4uXIo+cRV3o5oRNKRrbj TDBoX3aiaFN8AcJL8TXHRMWpjOod99VLAazMD5ZbMI97/kWS1eFyZiyewea24NpS uMSBQFbfZUs44nvYLv+6zIVsBZ1AOhUJwnjgY/3cV2MleVPyb81EJRtJBiOlmTBY i2Vhk61Vgb4Ab/NruMmsBMCEMZzGNKeO1HaatmFBPhEZYh9vkeynCQC9MciBgVBB jzdhsxWVbBhkYc1GJUzXNGDavGuay/OIuuihA58JDQGHFUxJGR3hkDXSaXLCmGxt dPln+WFItfQHCJStfa+9m/muuoCJkKCZu6TkCVZC+n8fbaCPNSvvEjGfi2b7jL/x QKYto9AgWA/FJU+Z572davaMcCk84gcm8FNpQzm0KoMkfRVqz6XCSoYQ8sxNXrQp 9+XzwAkLrqsVRZQK8rTzfGJ7G+7yMShBlyCgM8BhvUmGE6KS2c1J3AEe+ejumK1V a3jlmj6cO4IXVDZdE585NYTO6dMKxQ659VMErqYt0tzvmyPh6BqNyJkga9l/CHTA LHpYGImmQLtWx5uuh5jM+YLFSNktBhDeVMaqJOmalUfqdD8NeMuub7GciPxF6qAz u13iYmRsw4KZ66tE/w== =lqxR -----END PGP SIGNATURE----- Merge tag 'seccomp-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull seccomp updates from Kees Cook: "There are no core kernel changes here; it's entirely selftests and samples: - Improve reliability of selftests (Terry Tritton, Kees Cook) - Fix strict-aliasing warning in samples (Arnd Bergmann)" * tag 'seccomp-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: samples: user-trap: fix strict-aliasing warning selftests/seccomp: Pin benchmark to single CPU selftests/seccomp: user_notification_addfd check nextfd is available selftests/seccomp: Change the syscall used in KILL_THREAD test selftests/seccomp: Handle EINVAL on unshare(CLONE_NEWPID) |
||
|
Linus Torvalds
|
216532e147 |
hardening updates for v6.9-rc1
- string.h and related header cleanups (Tanzir Hasan, Andy Shevchenko)
- VMCI memcpy() usage and struct_size() cleanups (Vasiliy Kovalev, Harshit
Mogalapalli)
- selftests/powerpc: Fix load_unaligned_zeropad build failure (Michael
Ellerman)
- hardened Kconfig fragment updates (Marco Elver, Lukas Bulwahn)
- Handle tail call optimization better in LKDTM (Douglas Anderson)
- Use long form types in overflow.h (Andy Shevchenko)
- Add flags param to string_get_size() (Andy Shevchenko)
- Add Coccinelle script for potential struct_size() use (Jacob Keller)
- Fix objtool corner case under KCFI (Josh Poimboeuf)
- Drop 13 year old backward compat CAP_SYS_ADMIN check (Jingzi Meng)
- Add str_plural() helper (Michal Wajdeczko, Kees Cook)
- Ignore relocations in .notes section
- Add comments to explain how __is_constexpr() works
- Fix m68k stack alignment expectations in stackinit Kunit test
- Convert string selftests to KUnit
- Add KUnit tests for fortified string functions
- Improve reporting during fortified string warnings
- Allow non-type arg to type_max() and type_min()
- Allow strscpy() to be called with only 2 arguments
- Add binary mode to leaking_addresses scanner
- Various small cleanups to leaking_addresses scanner
- Adding wrapping_*() arithmetic helper
- Annotate initial signed integer wrap-around in refcount_t
- Add explicit UBSAN section to MAINTAINERS
- Fix UBSAN self-test warnings
- Simplify UBSAN build via removal of CONFIG_UBSAN_SANITIZE_ALL
- Reintroduce UBSAN's signed overflow sanitizer
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Merge tag 'hardening-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
"As is pretty normal for this tree, there are changes all over the
place, especially for small fixes, selftest improvements, and improved
macro usability.
Some header changes ended up landing via this tree as they depended on
the string header cleanups. Also, a notable set of changes is the work
for the reintroduction of the UBSAN signed integer overflow sanitizer
so that we can continue to make improvements on the compiler side to
make this sanitizer a more viable future security hardening option.
Summary:
- string.h and related header cleanups (Tanzir Hasan, Andy
Shevchenko)
- VMCI memcpy() usage and struct_size() cleanups (Vasiliy Kovalev,
Harshit Mogalapalli)
- selftests/powerpc: Fix load_unaligned_zeropad build failure
(Michael Ellerman)
- hardened Kconfig fragment updates (Marco Elver, Lukas Bulwahn)
- Handle tail call optimization better in LKDTM (Douglas Anderson)
- Use long form types in overflow.h (Andy Shevchenko)
- Add flags param to string_get_size() (Andy Shevchenko)
- Add Coccinelle script for potential struct_size() use (Jacob
Keller)
- Fix objtool corner case under KCFI (Josh Poimboeuf)
- Drop 13 year old backward compat CAP_SYS_ADMIN check (Jingzi Meng)
- Add str_plural() helper (Michal Wajdeczko, Kees Cook)
- Ignore relocations in .notes section
- Add comments to explain how __is_constexpr() works
- Fix m68k stack alignment expectations in stackinit Kunit test
- Convert string selftests to KUnit
- Add KUnit tests for fortified string functions
- Improve reporting during fortified string warnings
- Allow non-type arg to type_max() and type_min()
- Allow strscpy() to be called with only 2 arguments
- Add binary mode to leaking_addresses scanner
- Various small cleanups to leaking_addresses scanner
- Adding wrapping_*() arithmetic helper
- Annotate initial signed integer wrap-around in refcount_t
- Add explicit UBSAN section to MAINTAINERS
- Fix UBSAN self-test warnings
- Simplify UBSAN build via removal of CONFIG_UBSAN_SANITIZE_ALL
- Reintroduce UBSAN's signed overflow sanitizer"
* tag 'hardening-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (51 commits)
selftests/powerpc: Fix load_unaligned_zeropad build failure
string: Convert helpers selftest to KUnit
string: Convert selftest to KUnit
sh: Fix build with CONFIG_UBSAN=y
compiler.h: Explain how __is_constexpr() works
overflow: Allow non-type arg to type_max() and type_min()
VMCI: Fix possible memcpy() run-time warning in vmci_datagram_invoke_guest_handler()
lib/string_helpers: Add flags param to string_get_size()
x86, relocs: Ignore relocations in .notes section
objtool: Fix UNWIND_HINT_{SAVE,RESTORE} across basic blocks
overflow: Use POD in check_shl_overflow()
lib: stackinit: Adjust target string to 8 bytes for m68k
sparc: vdso: Disable UBSAN instrumentation
kernel.h: Move lib/cmdline.c prototypes to string.h
leaking_addresses: Provide mechanism to scan binary files
leaking_addresses: Ignore input device status lines
leaking_addresses: Use File::Temp for /tmp files
MAINTAINERS: Update LEAKING_ADDRESSES details
fortify: Improve buffer overflow reporting
fortify: Add KUnit tests for runtime overflows
...
|
||
|
Linus Torvalds
|
b32273ee89 |
execve updates for v6.9-rc1
- Drop needless error path code in remove_arg_zero() (Li kunyu, Kees Cook) - binfmt_elf_efpic: Don't use missing interpreter's properties (Max Filippov) - Use /bin/bash for execveat selftests -----BEGIN PGP SIGNATURE----- iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmXvlWUWHGtlZXNjb29r QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJueMEACVrxXuXlpozupTtixMzWkvoUjo bDmsyuX55PEmKwZXppD7cyxzHM0cdOzQmwMTBB8RWlMzZDMB/U6A8vxwKdoqGNT6 8nQ7/+GkeZLL32BSf8rtMsCrnFx58elOzEuiogkUwz73G/fBe+tbbZAFsR7q5cvr 6sHT9gP2Topycr01fHUwL41yDLZReCasxWdR+kYfn2akmpBGHpw12auHmZcVmWCc /uJTF4FUBt6Fa2h2OmQ3IByNZ50UoORfFkpP93ZaL1MUlILWMXo3DHOAM9vhowut PMa/9Blw86hZBIjKEkeeCIU83LSnI5PQCd7V+zCJmaslxkNPvoeH09rqHfGL37Pv DAOPpTEEm0l6ifunIAruSRmislBzQgO6n5ALPmMp4PcdBi5bbsk9PCLDEFwaTCeV 9H4kZnPl00Q7yyEXwHSJi1FFF3/DM0ntXVND2KQJVzqrszB51lALkI8fypWvTb9h POmU7PrYEXdjiTcMsWarajHYeV/VjmY7vwzjl8lXiw5nWnLJYQua8TAx4dEhpM3z qwa5K2L724ncsgKkwDZPDA3DsUAN9jYK+eqRRi6kD5zWdTkBHVvdLQrBjkUhndw/ DL2FkcLDewbHInEdbbIFOJUUmBxbRLcXEqb2nzQtiYIBQm4VqZFKTQqZVDWHF1UP +VeLTdDf6piwoP0cvQ== =MLV7 -----END PGP SIGNATURE----- Merge tag 'execve-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull execve updates from Kees Cook: - Drop needless error path code in remove_arg_zero() (Li kunyu, Kees Cook) - binfmt_elf_efpic: Don't use missing interpreter's properties (Max Filippov) - Use /bin/bash for execveat selftests * tag 'execve-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: exec: Simplify remove_arg_zero() error path selftests/exec: Perform script checks with /bin/bash exec: Delete unnecessary statements in remove_arg_zero() fs: binfmt_elf_efpic: don't use missing interpreter's properties |
||
Nico Pache
|
84d147df13 |
selftests/mm: skip the hugetlb-madvise tests on unmet hugepage requirements
Now that run_vmtests.sh does not guarantee that the correct hugepage count is available, skip the hugetlb-madvise test if the requirements are not met rather than failing. Link: https://lkml.kernel.org/r/20240306223714.320681-4-npache@redhat.com Signed-off-by: Nico Pache <npache@redhat.com> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: Muchun Song <muchun.song@linux.dev> Cc: Muhammad Usama Anjum <usama.anjum@collabora.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Nico Pache
|
5a6aa60d18 |
selftests/mm: skip uffd hugetlb tests with insufficient hugepages
Now that run_vmtests.sh does not guarantee that the correct hugepage count is available, add a check inside the userfaultfd hugetlb test to verify the nr_hugepages count before continuing. Link: https://lkml.kernel.org/r/20240306223714.320681-3-npache@redhat.com Signed-off-by: Nico Pache <npache@redhat.com> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: Muchun Song <muchun.song@linux.dev> Cc: Muhammad Usama Anjum <usama.anjum@collabora.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Nico Pache
|
2fd570c1d8 |
selftests/mm: dont fail testsuite due to a lack of hugepages
Patch series "selftests/mm: Improve Hugepage Test Handling in MM
Selftests", v2.
This series addresses issues related to hugepage requirements in the MM
selftests, ensuring tests are skipped rather than failing when the
necessary hugepage count is not met.
This adjustment allows for a more graceful handling for systems with
insufficient hugepages, preventing unnecessary test failures and improving
the overall robustness of the test suite.
This patch (of 3):
On systems that have large core counts and large page sizes, but limited
memory, the userfaultfd test hugepage requirement is too large.
Exiting early due to missing one test's requirements is a rather
aggressive strategy, and prevents a lot of other tests from running.
Remove the early exit to prevent this.
Link: https://lkml.kernel.org/r/20240306223714.320681-1-npache@redhat.com
Link: https://lkml.kernel.org/r/20240306223714.320681-2-npache@redhat.com
Fixes:
|
||
|
Linus Torvalds
|
691632f0e8 |
s390 updates for 6.9 merge window
- Various virtual vs physical address usage fixes
- Fix error handling in Processor Activity Instrumentation device driver, and
export number of counters with a sysfs file
- Allow for multiple events when Processor Activity Instrumentation counters
are monitored in system wide sampling
- Change multiplier and shift values of the Time-of-Day clock source to improve
steering precision
- Remove a couple of unneeded GFP_DMA flags from allocations
- Disable mmap alignment if randomize_va_space is also disabled, to avoid a too
small heap
- Various changes to allow s390 to be compiled with LLVM=1, since ld.lld and
llvm-objcopy will have proper s390 support witch clang 19
- Add __uninitialized macro to Compiler Attributes. This is helpful with s390's
FPU code where some users have up to 520 byte stack frames. Clearing such
stack frames (if INIT_STACK_ALL_PATTERN or INIT_STACK_ALL_ZERO is enabled)
before they are used contradicts the intention (performance improvement) of
such code sections.
- Convert switch_to() to an out-of-line function, and use the generic switch_to
header file
- Replace the usage of s390's debug feature with pr_debug() calls within the
zcrypt device driver
- Improve hotplug support of the Adjunct Processor device driver
- Improve retry handling in the zcrypt device driver
- Various changes to the in-kernel FPU code:
- Make in-kernel FPU sections preemptible
- Convert various larger inline assemblies and assembler files to C, mainly
by using singe instruction inline assemblies. This increases readability,
but also allows makes it easier to add proper instrumentation hooks
- Cleanup of the header files
- Provide fast variants of csum_partial() and csum_partial_copy_nocheck() based
on vector instructions
- Introduce and use a lock to synchronize accesses to zpci device data
structures to avoid inconsistent states caused by concurrent accesses
- Compile the kernel without -fPIE. This addresses the following problems if
the kernel is compiled with -fPIE:
- It uses dynamic symbols (.dynsym), for which the linker refuses to allow
more than 64k sections. This can break features which use
'-ffunction-sections' and '-fdata-sections', including kpatch-build and
function granular KASLR
- It unnecessarily uses GOT relocations, adding an extra layer of indirection
for many memory accesses
- Fix shared_cpu_list for CPU private L2 caches, which incorrectly were
reported as globally shared
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Merge tag 's390-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Heiko Carstens:
- Various virtual vs physical address usage fixes
- Fix error handling in Processor Activity Instrumentation device
driver, and export number of counters with a sysfs file
- Allow for multiple events when Processor Activity Instrumentation
counters are monitored in system wide sampling
- Change multiplier and shift values of the Time-of-Day clock source to
improve steering precision
- Remove a couple of unneeded GFP_DMA flags from allocations
- Disable mmap alignment if randomize_va_space is also disabled, to
avoid a too small heap
- Various changes to allow s390 to be compiled with LLVM=1, since
ld.lld and llvm-objcopy will have proper s390 support witch clang 19
- Add __uninitialized macro to Compiler Attributes. This is helpful
with s390's FPU code where some users have up to 520 byte stack
frames. Clearing such stack frames (if INIT_STACK_ALL_PATTERN or
INIT_STACK_ALL_ZERO is enabled) before they are used contradicts the
intention (performance improvement) of such code sections.
- Convert switch_to() to an out-of-line function, and use the generic
switch_to header file
- Replace the usage of s390's debug feature with pr_debug() calls
within the zcrypt device driver
- Improve hotplug support of the Adjunct Processor device driver
- Improve retry handling in the zcrypt device driver
- Various changes to the in-kernel FPU code:
- Make in-kernel FPU sections preemptible
- Convert various larger inline assemblies and assembler files to
C, mainly by using singe instruction inline assemblies. This
increases readability, but also allows makes it easier to add
proper instrumentation hooks
- Cleanup of the header files
- Provide fast variants of csum_partial() and
csum_partial_copy_nocheck() based on vector instructions
- Introduce and use a lock to synchronize accesses to zpci device data
structures to avoid inconsistent states caused by concurrent accesses
- Compile the kernel without -fPIE. This addresses the following
problems if the kernel is compiled with -fPIE:
- It uses dynamic symbols (.dynsym), for which the linker refuses
to allow more than 64k sections. This can break features which
use '-ffunction-sections' and '-fdata-sections', including
kpatch-build and function granular KASLR
- It unnecessarily uses GOT relocations, adding an extra layer of
indirection for many memory accesses
- Fix shared_cpu_list for CPU private L2 caches, which incorrectly were
reported as globally shared
* tag 's390-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (117 commits)
s390/tools: handle rela R_390_GOTPCDBL/R_390_GOTOFF64
s390/cache: prevent rebuild of shared_cpu_list
s390/crypto: remove retry loop with sleep from PAES pkey invocation
s390/pkey: improve pkey retry behavior
s390/zcrypt: improve zcrypt retry behavior
s390/zcrypt: introduce retries on in-kernel send CPRB functions
s390/ap: introduce mutex to lock the AP bus scan
s390/ap: rework ap_scan_bus() to return true on config change
s390/ap: clarify AP scan bus related functions and variables
s390/ap: rearm APQNs bindings complete completion
s390/configs: increase number of LOCKDEP_BITS
s390/vfio-ap: handle hardware checkstop state on queue reset operation
s390/pai: change sampling event assignment for PMU device driver
s390/boot: fix minor comment style damages
s390/boot: do not check for zero-termination relocation entry
s390/boot: make type of __vmlinux_relocs_64_start|end consistent
s390/boot: sanitize kaslr_adjust_relocs() function prototype
s390/boot: simplify GOT handling
s390: vmlinux.lds.S: fix .got.plt assertion
s390/boot: workaround current 'llvm-objdump -t -j ...' behavior
...
|
||
Ido Schimmel
|
d8a21070b6 |
nexthop: Fix out-of-bounds access during attribute validation
Passing a maximum attribute type to nlmsg_parse() that is larger than
the size of the passed policy will result in an out-of-bounds access [1]
when the attribute type is used as an index into the policy array.
Fix by setting the maximum attribute type according to the policy size,
as is already done for RTM_NEWNEXTHOP messages. Add a test case that
triggers the bug.
No regressions in fib nexthops tests:
# ./fib_nexthops.sh
[...]
Tests passed: 236
Tests failed: 0
[1]
BUG: KASAN: global-out-of-bounds in __nla_validate_parse+0x1e53/0x2940
Read of size 1 at addr ffffffff99ab4d20 by task ip/610
CPU: 3 PID: 610 Comm: ip Not tainted 6.8.0-rc7-custom-gd435d6e3e161 #9
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-1.fc38 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0x8f/0xe0
print_report+0xcf/0x670
kasan_report+0xd8/0x110
__nla_validate_parse+0x1e53/0x2940
__nla_parse+0x40/0x50
rtm_del_nexthop+0x1bd/0x400
rtnetlink_rcv_msg+0x3cc/0xf20
netlink_rcv_skb+0x170/0x440
netlink_unicast+0x540/0x820
netlink_sendmsg+0x8d3/0xdb0
____sys_sendmsg+0x31f/0xa60
___sys_sendmsg+0x13a/0x1e0
__sys_sendmsg+0x11c/0x1f0
do_syscall_64+0xc5/0x1d0
entry_SYSCALL_64_after_hwframe+0x63/0x6b
[...]
The buggy address belongs to the variable:
rtm_nh_policy_del+0x20/0x40
Fixes:
|
||
Jakub Kicinski
|
5f20e6ab1f |
for-netdev
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE+soXsSLHKoYyzcli6rmadz2vbToFAmXvm7IACgkQ6rmadz2v bTqdMA//VMHNHVLb4oROoXyQD9fw2mCmIUEKzP88RXfqcxsfEX7HF+k8B5ZTk0ro CHXTAnc79+Qqg0j24bkQKxup/fKBQVw9D+Ia4b3ytlm1I2MtyU/16xNEzVhAPU2D iKk6mVBsEdCbt/GjpWORy/VVnZlZpC7BOpZLxsbbxgXOndnCegyjXzSnLGJGxdvi zkrQTn2SrFzLi6aNpVLqrv6Nks6HJusfCKsIrtlbkQ85dulasHOtwK9s6GF60nte aaho+MPx3L+lWEgapsm8rR779pHaYIB/GbZUgEPxE/xUJ/V8BzDgFNLMzEiIBRMN a0zZam11BkBzCfcO9gkvDRByaei/dZz2jdqfU4GlHklFj1WFfz8Q7fRLEPINksvj WXLgJADGY5mtGbjG21FScThxzj+Ruqwx0a13ddlyI/W+P3y5yzSWsLwJG5F9p0oU 6nlkJ4U8yg+9E1ie5ae0TibqvRJzXPjfOERZGwYDSVvfQGzv1z+DGSOPMmgNcWYM dIaO+A/+NS3zdbk8+1PP2SBbhHPk6kWyCUByWc7wMzCPTiwriFGY/DD2sN+Fsufo zorzfikUQOlTfzzD5jbmT49U8hUQUf6QIWsu7BijSiHaaC7am4S8QB2O6ibJMqdv yNiwvuX+ThgVIY3QKrLLqL0KPGeKMR5mtfq6rrwSpfp/b4g27FE= =eFgA -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Alexei Starovoitov says: ==================== pull-request: bpf-next 2024-03-11 We've added 59 non-merge commits during the last 9 day(s) which contain a total of 88 files changed, 4181 insertions(+), 590 deletions(-). The main changes are: 1) Enforce VM_IOREMAP flag and range in ioremap_page_range and introduce VM_SPARSE kind and vm_area_[un]map_pages to be used in bpf_arena, from Alexei. 2) Introduce bpf_arena which is sparse shared memory region between bpf program and user space where structures inside the arena can have pointers to other areas of the arena, and pointers work seamlessly for both user-space programs and bpf programs, from Alexei and Andrii. 3) Introduce may_goto instruction that is a contract between the verifier and the program. The verifier allows the program to loop assuming it's behaving well, but reserves the right to terminate it, from Alexei. 4) Use IETF format for field definitions in the BPF standard document, from Dave. 5) Extend struct_ops libbpf APIs to allow specify version suffixes for stuct_ops map types, share the same BPF program between several map definitions, and other improvements, from Eduard. 6) Enable struct_ops support for more than one page in trampolines, from Kui-Feng. 7) Support kCFI + BPF on riscv64, from Puranjay. 8) Use bpf_prog_pack for arm64 bpf trampoline, from Puranjay. 9) Fix roundup_pow_of_two undefined behavior on 32-bit archs, from Toke. ==================== Link: https://lore.kernel.org/r/20240312003646.8692-1-alexei.starovoitov@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
Jiri Olsa
|
379b97bbf0 |
selftests/bpf: Add kprobe multi triggering benchmarks
Adding kprobe multi triggering benchmarks. It's useful now to bench new fprobe implementation and might be useful later as well. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20240311211023.590321-1-jolsa@kernel.org |
||
|
Alexei Starovoitov
|
8df839ae23 |
selftests/bpf: Add bpf_arena_htab test.
bpf_arena_htab.h - hash table implemented as bpf program Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20240308010812.89848-15-alexei.starovoitov@gmail.com |
||
|
Alexei Starovoitov
|
9f2c156f90 |
selftests/bpf: Add bpf_arena_list test.
bpf_arena_alloc.h - implements page_frag allocator as a bpf program. bpf_arena_list.h - doubly linked link list as a bpf program. Compiled as a bpf program and as native C code. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20240308010812.89848-14-alexei.starovoitov@gmail.com |
||
|
Alexei Starovoitov
|
80a4129fcf |
selftests/bpf: Add unit tests for bpf_arena_alloc/free_pages
Add unit tests for bpf_arena_alloc/free_pages() functionality and bpf_arena_common.h with a set of common helpers and macros that is used in this test and the following patches. Also modify test_loader that didn't support running bpf_prog_type_syscall programs. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20240308010812.89848-13-alexei.starovoitov@gmail.com |
||
|
Alexei Starovoitov
|
204c628730 |
bpf: Add helper macro bpf_addr_space_cast()
Introduce helper macro bpf_addr_space_cast() that emits: rX = rX instruction with off = BPF_ADDR_SPACE_CAST and encodes dest and src address_space-s into imm32. It's useful with older LLVM that doesn't emit this insn automatically. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/bpf/20240308010812.89848-12-alexei.starovoitov@gmail.com |
||
Geliang Tang
|
8f7a69a8e7 |
selftests: mptcp: use KSFT_SKIP/KSFT_PASS/KSFT_FAIL
This patch uses the public var KSFT_SKIP in mptcp_lib.sh instead of
ksft_skip, and drop 'ksft_skip=4' in mptcp_join.sh.
Use KSFT_PASS and KSFT_FAIL macros instead of 0 and 1 after 'exit '
and 'ret=' in all scripts:
exit 0 -> exit ${KSFT_PASS}
exit 1 -> exit ${KSFT_FAIL}
ret=0 -> ret=${KSFT_PASS}
ret=1 -> ret=${KSFT_FAIL}
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20240308-upstream-net-next-20240308-selftests-mptcp-unification-v1-15-4f42c347b653@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
||
|
Geliang Tang
|
23a0485d1c |
selftests: mptcp: declare event macros in mptcp_lib
MPTCP event macros (SUB_ESTABLISHED, LISTENER_CREATED, LISTENER_CLOSED), and the protocol family macros (AF_INET, AF_INET6) are defined in both mptcp_join.sh and userspace_pm.sh. In order not to duplicate code, this patch declares them all in mptcp_lib.sh with MPTCP_LIB_ prefixs. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240308-upstream-net-next-20240308-selftests-mptcp-unification-v1-14-4f42c347b653@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Geliang Tang
|
7f0782ca1c |
selftests: mptcp: add mptcp_lib_verify_listener_events
To avoid duplicated code in different MPTCP selftests, we can add and use helpers defined in mptcp_lib.sh. The helper verify_listener_events() is defined both in mptcp_join.sh and userspace_pm.sh, export it into mptcp_lib.sh and rename it with mptcp_lib_ prefix. Use this new helper in both scripts. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240308-upstream-net-next-20240308-selftests-mptcp-unification-v1-13-4f42c347b653@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Geliang Tang
|
8ebb441965 |
selftests: mptcp: print_test out of verify_listener_events
verify_listener_events() helper will be exported into mptcp_lib.sh as a public function, but print_test() is invoked in it, which is a private function in userspace_pm.sh only. So this patch moves print_test() out of verify_listener_events(). Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240308-upstream-net-next-20240308-selftests-mptcp-unification-v1-12-4f42c347b653@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Geliang Tang
|
663260e146 |
selftests: mptcp: extract mptcp_lib_check_expected
Extract the main part of check_expected() in userspace_pm.sh to a new function mptcp_lib_check_expected() in mptcp_lib.sh. It will be used in both mptcp_john.sh and userspace_pm.sh. check_expected_one() is moved into mptcp_lib.sh too as mptcp_lib_check_expected_one(). Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240308-upstream-net-next-20240308-selftests-mptcp-unification-v1-11-4f42c347b653@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Geliang Tang
|
339c225e2e |
selftests: mptcp: call test_fail without argument
This patch modifies test_fail() to call mptcp_lib_pr_fail() only if there
are arguments (if [ ${#} -gt 0 ]) in userspace_pm.sh, add arguments
"unexpected type: ${type}" when calling test_fail() from test_remove().
Then mptcp_lib_pr_fail() can be used in check_expected_one() instead of
test_fail().
The same in mptcp_join.sh, calling fail_test() without argument, and adapt
this helper not to call print_fail() in this case.
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20240308-upstream-net-next-20240308-selftests-mptcp-unification-v1-10-4f42c347b653@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
||
|
Geliang Tang
|
747ba8783a |
selftests: mptcp: print test results with colors
To unify the output formats of all test scripts, this patch adds four more helpers: mptcp_lib_pr_ok() mptcp_lib_pr_skip() mptcp_lib_pr_fail() mptcp_lib_pr_info() to print out [ OK ], [SKIP], [FAIL] and 'INFO: ' with colors. Use them in all scripts to print the "ok/skip/fail/info' using the same 'format'. Having colors helps to quickly identify issues when looking at a long list of output logs and results. Note that now all print the same keywords, which was not the case before, but it is good to uniform that. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240308-upstream-net-next-20240308-selftests-mptcp-unification-v1-9-4f42c347b653@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Geliang Tang
|
e7c42bf4d3 |
selftests: mptcp: use += operator to append strings
This patch uses addition assignment operator (+=) to append strings instead of duplicating the variable name in mptcp_connect.sh and mptcp_join.sh. This can make the statements shorter. Note: in mptcp_connect.sh, add a local variable extra in do_transfer to save the various extra warning logs, using += to append it. And add a new variable tc_info to save various tc info, also using += to append it. This can make the code more readable and prepare for the next commit. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240308-upstream-net-next-20240308-selftests-mptcp-unification-v1-8-4f42c347b653@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Geliang Tang
|
aa7694766f |
selftests: mptcp: print test results with counters
This patch adds a new helper mptcp_lib_print_title(), a wrapper of mptcp_lib_inc_test_counter() and mptcp_lib_pr_title_counter(), to print out test counter in each test result and increase the counter. Use this helper to print out test counters for every tests in diag.sh, mptcp_connect.sh, mptcp_sockopt.sh, pm_netlink.sh, simult_flows.sh, and userspace_pm.sh. diag.sh: 01 no msk on netns creation [ ok ] 02 listen match for dport 10000 [ ok ] 03 listen match for sport 10000 [ ok ] 04 listen match for saddr and sport [ ok ] 05 all listen sockets [ ok ] mptcp_connect.sh: 01 New MPTCP socket can be blocked via sysctl [ OK ] 02 Validating network environment with pings [ OK ] INFO: Using loss of 0.85% delay 31 ms reorder .. with delay 7ms on ns3eth4 03 ns1 MPTCP -> ns1 (10.0.1.1:10000 ) MPTCP (duration 69ms) [ OK ] 04 ns1 MPTCP -> ns1 (10.0.1.1:10001 ) TCP (duration 20ms) [ OK ] 05 ns1 TCP -> ns1 (10.0.1.1:10002 ) MPTCP (duration 16ms) [ OK ] mptcp_sockopt.sh: 01 Transfer v4 [ OK ] 02 Mark v4 [ OK ] 03 Transfer v6 [ OK ] 04 Mark v6 [ OK ] 05 SOL_MPTCP sockopt v4 [ OK ] pm_netlink.sh: 01 defaults addr list [ OK ] 02 simple add/get addr [ OK ] 03 dump addrs [ OK ] 04 simple del addr [ OK ] 05 dump addrs after del [ OK ] simult_flows.sh: 01 balanced bwidth 7391 max 8456 [ OK ] 02 balanced bwidth - reverse direction 7403 max 8456 [ OK ] 03 balanced bwidth with unbalanced delay 7429 max 8456 [ OK ] 04 balanced bwidth with unbalanced delay - reverse ... 7485 max 8456 [ OK ] 05 unbalanced bwidth 7549 max 8456 [ OK ] userspace_pm.sh: 01 Created network namespaces ns1, ns2 [ OK ] INFO: Make connections 02 Established IPv4 MPTCP Connection ns2 => ns1 [ OK ] 03 Established IPv6 MPTCP Connection ns2 => ns1 [ OK ] INFO: Announce tests 04 ADD_ADDR 10.0.2.2 (ns2) => ns1, invalid token [ OK ] 05 ADD_ADDR id:67 10.0.2.2 (ns2) => ns1, reuse port [ OK ] Having test counters helps to quickly identify issues when looking at a long list of output logs and results. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240308-upstream-net-next-20240308-selftests-mptcp-unification-v1-7-4f42c347b653@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Geliang Tang
|
3382bb0970 |
selftests: mptcp: add print_title in mptcp_lib
This patch adds a new variable MPTCP_LIB_TEST_FORMAT as the test title printing format. Also add a helper mptcp_lib_print_title() to use this format to print the test title with test counters. They are used in mptcp_join.sh first. Each MPTCP selftest is having subtests, and it helps to give them a number to quickly identify them. This can be managed by mptcp_lib.sh, reusing what has been done here. The following commit will use these new helpers in the other tests. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240308-upstream-net-next-20240308-selftests-mptcp-unification-v1-6-4f42c347b653@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Geliang Tang
|
9e6a39ecb9 |
selftests: mptcp: export TEST_COUNTER variable
Variable TEST_COUNT are used in mptcp_connect.sh and mptcp_join.sh as test counters, which are initialized to 0, while variable test_cnt are used in diag.sh and simult_flows.sh, which are initialized to 1. To maintain consistency, this patch renames them all as MPTCP_LIB_TEST_COUNTER, initializes it to 1, and exports it into mptcp_lib.sh. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240308-upstream-net-next-20240308-selftests-mptcp-unification-v1-5-4f42c347b653@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Geliang Tang
|
fd959262c1 |
selftests: mptcp: sockopt: print every test result
Only total test results are printed out in mptcp_sockopt.sh: PASS: all packets had packet mark set PASS: SOL_MPTCP getsockopt has expected information PASS: TCP_INQ cmsg/ioctl -t tcp PASS: TCP_INQ cmsg/ioctl -6 -t tcp PASS: TCP_INQ cmsg/ioctl -r tcp PASS: TCP_INQ cmsg/ioctl -6 -r tcp PASS: TCP_INQ cmsg/ioctl -r tcp -t tcp They mismatch with the test results: ok 1 - mptcp_sockopt: mark ipv4 ok 2 - mptcp_sockopt: transfer ipv4 ok 3 - mptcp_sockopt: mark ipv6 ok 4 - mptcp_sockopt: transfer ipv6 ok 5 - mptcp_sockopt: sockopt v4 ok 6 - mptcp_sockopt: sockopt v6 ok 7 - mptcp_sockopt: TCP_INQ: -t tcp ok 8 - mptcp_sockopt: TCP_INQ: -6 -t tcp ok 9 - mptcp_sockopt: TCP_INQ: -r tcp ok 10 - mptcp_sockopt: TCP_INQ: -6 -r tcp ok 11 - mptcp_sockopt: TCP_INQ: -r tcp -t tcp 'mptcp_sockopt.sh' now display more detailed results + why (what you had in a former patch from v6, merged here). It no longer displays 'PASS:', because it is duplicated info now that the detailed are displayed: Transfer v4 [ OK ] Mark v4 [ OK ] Transfer v6 [ OK ] Mark v6 [ OK ] SOL_MPTCP sockopt v4 [ OK ] SOL_MPTCP sockopt v6 [ OK ] TCP_INQ cmsg/ioctl -t tcp [ OK ] TCP_INQ cmsg/ioctl -6 -t tcp [ OK ] TCP_INQ cmsg/ioctl -r tcp [ OK ] TCP_INQ cmsg/ioctl -6 -r tcp [ OK ] TCP_INQ cmsg/ioctl -r tcp -t tcp [ OK ] Also fix the TAP output: ok 1 - mptcp_sockopt: transfer ipv4 ok 2 - mptcp_sockopt: mark ipv4 ok 3 - mptcp_sockopt: transfer ipv6 ok 4 - mptcp_sockopt: mark ipv6 ok 5 - mptcp_sockopt: sockopt v4 ok 6 - mptcp_sockopt: sockopt v6 ok 7 - mptcp_sockopt: TCP_INQ: -t tcp ok 8 - mptcp_sockopt: TCP_INQ: -6 -t tcp ok 9 - mptcp_sockopt: TCP_INQ: -r tcp ok 10 - mptcp_sockopt: TCP_INQ: -6 -r tcp ok 11 - mptcp_sockopt: TCP_INQ: -r tcp -t tcp Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240308-upstream-net-next-20240308-selftests-mptcp-unification-v1-4-4f42c347b653@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Geliang Tang
|
c9161a0f8f |
selftests: mptcp: connect: fix misaligned output
The first [ OK ] in the output of mptcp_connect.sh misaligns with the others: New MPTCP socket can be blocked via sysctl [ OK ] INFO: validating network environment with pings INFO: Using loss of 0.85% delay 16 ms reorder 95% 70% with delay 4ms on ns1 MPTCP -> ns1 (10.0.1.1:10000 ) MPTCP (duration 184ms) [ OK ] ns1 MPTCP -> ns1 (10.0.1.1:10001 ) TCP (duration 50ms) [ OK ] ns1 TCP -> ns1 (10.0.1.1:10002 ) MPTCP (duration 55ms) [ OK ] This patch aligns them by using 69 chars to display the first two lines, and 50 chars for the other. Since 19 chars are used to display duration time. Also print out a [ OK ] at the end of the 2nd line for consistency. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240308-upstream-net-next-20240308-selftests-mptcp-unification-v1-3-4f42c347b653@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Geliang Tang
|
01ed983810 |
selftests: mptcp: connect: add dedicated port counter
This patch adds a new dedicated counter 'port' instead of TEST_COUNT to increase port numbers in mptcp_connect.sh. This can avoid outputting discontinuous test counters. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240308-upstream-net-next-20240308-selftests-mptcp-unification-v1-2-4f42c347b653@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Geliang Tang
|
6215df11b9 |
selftests: mptcp: print all error messages to stdout
Some error messages are printed to stderr while the others are printed to 'stdout'. As part of the unification, this patch drop "1>&2" to let all errors messages are printed to 'stdout'. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240308-upstream-net-next-20240308-selftests-mptcp-unification-v1-1-4f42c347b653@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Linus Torvalds
|
d08c407f71 |
A large set of updates and features for timers and timekeeping:
- The hierarchical timer pull model
When timer wheel timers are armed they are placed into the timer wheel
of a CPU which is likely to be busy at the time of expiry. This is done
to avoid wakeups on potentially idle CPUs.
This is wrong in several aspects:
1) The heuristics to select the target CPU are wrong by
definition as the chance to get the prediction right is close
to zero.
2) Due to #1 it is possible that timers are accumulated on a
single target CPU
3) The required computation in the enqueue path is just overhead for
dubious value especially under the consideration that the vast
majority of timer wheel timers are either canceled or rearmed
before they expire.
The timer pull model avoids the above by removing the target
computation on enqueue and queueing timers always on the CPU on which
they get armed.
This is achieved by having separate wheels for CPU pinned timers and
global timers which do not care about where they expire.
As long as a CPU is busy it handles both the pinned and the global
timers which are queued on the CPU local timer wheels.
When a CPU goes idle it evaluates its own timer wheels:
- If the first expiring timer is a pinned timer, then the global
timers can be ignored as the CPU will wake up before they expire.
- If the first expiring timer is a global timer, then the expiry time
is propagated into the timer pull hierarchy and the CPU makes sure
to wake up for the first pinned timer.
The timer pull hierarchy organizes CPUs in groups of eight at the
lowest level and at the next levels groups of eight groups up to the
point where no further aggregation of groups is required, i.e. the
number of levels is log8(NR_CPUS). The magic number of eight has been
established by experimention, but can be adjusted if needed.
In each group one busy CPU acts as the migrator. It's only one CPU to
avoid lock contention on remote timer wheels.
The migrator CPU checks in its own timer wheel handling whether there
are other CPUs in the group which have gone idle and have global timers
to expire. If there are global timers to expire, the migrator locks the
remote CPU timer wheel and handles the expiry.
Depending on the group level in the hierarchy this handling can require
to walk the hierarchy downwards to the CPU level.
Special care is taken when the last CPU goes idle. At this point the
CPU is the systemwide migrator at the top of the hierarchy and it
therefore cannot delegate to the hierarchy. It needs to arm its own
timer device to expire either at the first expiring timer in the
hierarchy or at the first CPU local timer, which ever expires first.
This completely removes the overhead from the enqueue path, which is
e.g. for networking a true hotpath and trades it for a slightly more
complex idle path.
This has been in development for a couple of years and the final series
has been extensively tested by various teams from silicon vendors and
ran through extensive CI.
There have been slight performance improvements observed on network
centric workloads and an Intel team confirmed that this allows them to
power down a die completely on a mult-die socket for the first time in
a mostly idle scenario.
There is only one outstanding ~1.5% regression on a specific overloaded
netperf test which is currently investigated, but the rest is either
positive or neutral performance wise and positive on the power
management side.
- Fixes for the timekeeping interpolation code for cross-timestamps:
cross-timestamps are used for PTP to get snapshots from hardware timers
and interpolated them back to clock MONOTONIC. The changes address a
few corner cases in the interpolation code which got the math and logic
wrong.
- Simplifcation of the clocksource watchdog retry logic to automatically
adjust to handle larger systems correctly instead of having more
incomprehensible command line parameters.
- Treewide consolidation of the VDSO data structures.
- The usual small improvements and cleanups all over the place.
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Merge tag 'timers-core-2024-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"A large set of updates and features for timers and timekeeping:
- The hierarchical timer pull model
When timer wheel timers are armed they are placed into the timer
wheel of a CPU which is likely to be busy at the time of expiry.
This is done to avoid wakeups on potentially idle CPUs.
This is wrong in several aspects:
1) The heuristics to select the target CPU are wrong by
definition as the chance to get the prediction right is
close to zero.
2) Due to #1 it is possible that timers are accumulated on
a single target CPU
3) The required computation in the enqueue path is just overhead
for dubious value especially under the consideration that the
vast majority of timer wheel timers are either canceled or
rearmed before they expire.
The timer pull model avoids the above by removing the target
computation on enqueue and queueing timers always on the CPU on
which they get armed.
This is achieved by having separate wheels for CPU pinned timers
and global timers which do not care about where they expire.
As long as a CPU is busy it handles both the pinned and the global
timers which are queued on the CPU local timer wheels.
When a CPU goes idle it evaluates its own timer wheels:
- If the first expiring timer is a pinned timer, then the global
timers can be ignored as the CPU will wake up before they
expire.
- If the first expiring timer is a global timer, then the expiry
time is propagated into the timer pull hierarchy and the CPU
makes sure to wake up for the first pinned timer.
The timer pull hierarchy organizes CPUs in groups of eight at the
lowest level and at the next levels groups of eight groups up to
the point where no further aggregation of groups is required, i.e.
the number of levels is log8(NR_CPUS). The magic number of eight
has been established by experimention, but can be adjusted if
needed.
In each group one busy CPU acts as the migrator. It's only one CPU
to avoid lock contention on remote timer wheels.
The migrator CPU checks in its own timer wheel handling whether
there are other CPUs in the group which have gone idle and have
global timers to expire. If there are global timers to expire, the
migrator locks the remote CPU timer wheel and handles the expiry.
Depending on the group level in the hierarchy this handling can
require to walk the hierarchy downwards to the CPU level.
Special care is taken when the last CPU goes idle. At this point
the CPU is the systemwide migrator at the top of the hierarchy and
it therefore cannot delegate to the hierarchy. It needs to arm its
own timer device to expire either at the first expiring timer in
the hierarchy or at the first CPU local timer, which ever expires
first.
This completely removes the overhead from the enqueue path, which
is e.g. for networking a true hotpath and trades it for a slightly
more complex idle path.
This has been in development for a couple of years and the final
series has been extensively tested by various teams from silicon
vendors and ran through extensive CI.
There have been slight performance improvements observed on network
centric workloads and an Intel team confirmed that this allows them
to power down a die completely on a mult-die socket for the first
time in a mostly idle scenario.
There is only one outstanding ~1.5% regression on a specific
overloaded netperf test which is currently investigated, but the
rest is either positive or neutral performance wise and positive on
the power management side.
- Fixes for the timekeeping interpolation code for cross-timestamps:
cross-timestamps are used for PTP to get snapshots from hardware
timers and interpolated them back to clock MONOTONIC. The changes
address a few corner cases in the interpolation code which got the
math and logic wrong.
- Simplifcation of the clocksource watchdog retry logic to
automatically adjust to handle larger systems correctly instead of
having more incomprehensible command line parameters.
- Treewide consolidation of the VDSO data structures.
- The usual small improvements and cleanups all over the place"
* tag 'timers-core-2024-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (62 commits)
timer/migration: Fix quick check reporting late expiry
tick/sched: Fix build failure for CONFIG_NO_HZ_COMMON=n
vdso/datapage: Quick fix - use asm/page-def.h for ARM64
timers: Assert no next dyntick timer look-up while CPU is offline
tick: Assume timekeeping is correctly handed over upon last offline idle call
tick: Shut down low-res tick from dying CPU
tick: Split nohz and highres features from nohz_mode
tick: Move individual bit features to debuggable mask accesses
tick: Move got_idle_tick away from common flags
tick: Assume the tick can't be stopped in NOHZ_MODE_INACTIVE mode
tick: Move broadcast cancellation up to CPUHP_AP_TICK_DYING
tick: Move tick cancellation up to CPUHP_AP_TICK_DYING
tick: Start centralizing tick related CPU hotplug operations
tick/sched: Don't clear ts::next_tick again in can_stop_idle_tick()
tick/sched: Rename tick_nohz_stop_sched_tick() to tick_nohz_full_stop_tick()
tick: Use IS_ENABLED() whenever possible
tick/sched: Remove useless oneshot ifdeffery
tick/nohz: Remove duplicate between lowres and highres handlers
tick/nohz: Remove duplicate between tick_nohz_switch_to_nohz() and tick_setup_sched_timer()
hrtimer: Select housekeeping CPU during migration
...
|
||
Petr Machata
|
a22b042660 |
selftests: forwarding: Add a test for NH group stats
Add to lib.sh support for fetching NH stats, and a new library, router_mpath_nh_lib.sh, with the common code for testing NH stats. Use the latter from router_mpath_nh.sh and router_mpath_nh_res.sh. The test works by sending traffic through a NH group, and checking that the reported values correspond to what the link that ultimately receives the traffic reports having seen. Signed-off-by: Petr Machata <petrm@nvidia.com> Link: https://lore.kernel.org/r/2a424c54062a5f1efd13b9ec5b2b0e29c6af2574.1709901020.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Linus Torvalds
|
b5683a37c8 |
vfs-6.9.pidfd
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Merge tag 'vfs-6.9.pidfd' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull pdfd updates from Christian Brauner:
- Until now pidfds could only be created for thread-group leaders but
not for threads. There was no technical reason for this. We simply
had no users that needed support for this. Now we do have users that
need support for this.
This introduces a new PIDFD_THREAD flag for pidfd_open(). If that
flag is set pidfd_open() creates a pidfd that refers to a specific
thread.
In addition, we now allow clone() and clone3() to be called with
CLONE_PIDFD | CLONE_THREAD which wasn't possible before.
A pidfd that refers to an individual thread differs from a pidfd that
refers to a thread-group leader:
(1) Pidfds are pollable. A task may poll a pidfd and get notified
when the task has exited.
For thread-group leader pidfds the polling task is woken if the
thread-group is empty. In other words, if the thread-group
leader task exits when there are still threads alive in its
thread-group the polling task will not be woken when the
thread-group leader exits but rather when the last thread in the
thread-group exits.
For thread-specific pidfds the polling task is woken if the
thread exits.
(2) Passing a thread-group leader pidfd to pidfd_send_signal() will
generate thread-group directed signals like kill(2) does.
Passing a thread-specific pidfd to pidfd_send_signal() will
generate thread-specific signals like tgkill(2) does.
The default scope of the signal is thus determined by the type
of the pidfd.
Since use-cases exist where the default scope of the provided
pidfd needs to be overriden the following flags are added to
pidfd_send_signal():
- PIDFD_SIGNAL_THREAD
Send a thread-specific signal.
- PIDFD_SIGNAL_THREAD_GROUP
Send a thread-group directed signal.
- PIDFD_SIGNAL_PROCESS_GROUP
Send a process-group directed signal.
The scope change will only work if the struct pid is actually
used for this scope.
For example, in order to send a thread-group directed signal the
provided pidfd must be used as a thread-group leader and
similarly for PIDFD_SIGNAL_PROCESS_GROUP the struct pid must be
used as a process group leader.
- Move pidfds from the anonymous inode infrastructure to a tiny pseudo
filesystem. This will unblock further work that we weren't able to do
simply because of the very justified limitations of anonymous inodes.
Moving pidfds to a tiny pseudo filesystem allows for statx on pidfds
to become useful for the first time. They can now be compared by
inode number which are unique for the system lifetime.
Instead of stashing struct pid in file->private_data we can now stash
it in inode->i_private. This makes it possible to introduce concepts
that operate on a process once all file descriptors have been closed.
A concrete example is kill-on-last-close. Another side-effect is that
file->private_data is now freed up for per-file options for pidfds.
Now, each struct pid will refer to a different inode but the same
struct pid will refer to the same inode if it's opened multiple
times. In contrast to now where each struct pid refers to the same
inode.
The tiny pseudo filesystem is not visible anywhere in userspace
exactly like e.g., pipefs and sockfs. There's no lookup, there's no
complex inode operations, nothing. Dentries and inodes are always
deleted when the last pidfd is closed.
We allocate a new inode and dentry for each struct pid and we reuse
that inode and dentry for all pidfds that refer to the same struct
pid. The code is entirely optional and fairly small. If it's not
selected we fallback to anonymous inodes. Heavily inspired by nsfs.
The dentry and inode allocation mechanism is moved into generic
infrastructure that is now shared between nsfs and pidfs. The
path_from_stashed() helper must be provided with a stashing location,
an inode number, a mount, and the private data that is supposed to be
used and it will provide a path that can be passed to dentry_open().
The helper will try retrieve an existing dentry from the provided
stashing location. If a valid dentry is found it is reused. If not a
new one is allocated and we try to stash it in the provided location.
If this fails we retry until we either find an existing dentry or the
newly allocated dentry could be stashed. Subsequent openers of the
same namespace or task are then able to reuse it.
- Currently it is only possible to get notified when a task has exited,
i.e., become a zombie and userspace gets notified with EPOLLIN. We
now also support waiting until the task has been reaped, notifying
userspace with EPOLLHUP.
- Ensure that ESRCH is reported for getfd if a task is exiting instead
of the confusing EBADF.
- Various smaller cleanups to pidfd functions.
* tag 'vfs-6.9.pidfd' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (23 commits)
libfs: improve path_from_stashed()
libfs: add stashed_dentry_prune()
libfs: improve path_from_stashed() helper
pidfs: convert to path_from_stashed() helper
nsfs: convert to path_from_stashed() helper
libfs: add path_from_stashed()
pidfd: add pidfs
pidfd: move struct pidfd_fops
pidfd: allow to override signal scope in pidfd_send_signal()
pidfd: change pidfd_send_signal() to respect PIDFD_THREAD
signal: fill in si_code in prepare_kill_siginfo()
selftests: add ESRCH tests for pidfd_getfd()
pidfd: getfd should always report ESRCH if a task is exiting
pidfd: clone: allow CLONE_THREAD | CLONE_PIDFD together
pidfd: exit: kill the no longer used thread_group_exited()
pidfd: change do_notify_pidfd() to use __wake_up(poll_to_key(EPOLLIN))
pid: kill the obsolete PIDTYPE_PID code in transfer_pid()
pidfd: kill the no longer needed do_notify_pidfd() in de_thread()
pidfd_poll: report POLLHUP when pid_task() == NULL
pidfd: implement PIDFD_THREAD flag for pidfd_open()
...
|
||
|
Linus Torvalds
|
7ea65c89d8 |
vfs-6.9.misc
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Merge tag 'vfs-6.9.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
"Misc features, cleanups, and fixes for vfs and individual filesystems.
Features:
- Support idmapped mounts for hugetlbfs.
- Add RWF_NOAPPEND flag for pwritev2(). This allows us to fix a bug
where the passed offset is ignored if the file is O_APPEND. The new
flag allows a caller to enforce that the offset is honored to
conform to posix even if the file was opened in append mode.
- Move i_mmap_rwsem in struct address_space to avoid false sharing
between i_mmap and i_mmap_rwsem.
- Convert efs, qnx4, and coda to use the new mount api.
- Add a generic is_dot_dotdot() helper that's used by various
filesystems and the VFS code instead of open-coding it multiple
times.
- Recently we've added stable offsets which allows stable ordering
when iterating directories exported through NFS on e.g., tmpfs
filesystems. Originally an xarray was used for the offset map but
that caused slab fragmentation issues over time. This switches the
offset map to the maple tree which has a dense mode that handles
this scenario a lot better. Includes tests.
- Finally merge the case-insensitive improvement series Gabriel has
been working on for a long time. This cleanly propagates case
insensitive operations through ->s_d_op which in turn allows us to
remove the quite ugly generic_set_encrypted_ci_d_ops() operations.
It also improves performance by trying a case-sensitive comparison
first and then fallback to case-insensitive lookup if that fails.
This also fixes a bug where overlayfs would be able to be mounted
over a case insensitive directory which would lead to all sort of
odd behaviors.
Cleanups:
- Make file_dentry() a simple accessor now that ->d_real() is
simplified because of the backing file work we did the last two
cycles.
- Use the dedicated file_mnt_idmap helper in ntfs3.
- Use smp_load_acquire/store_release() in the i_size_read/write
helpers and thus remove the hack to handle i_size reads in the
filemap code.
- The SLAB_MEM_SPREAD is a nop now. Remove it from various places in
fs/
- It's no longer necessary to perform a second built-in initramfs
unpack call because we retain the contents of the previous
extraction. Remove it.
- Now that we have removed various allocators kfree_rcu() always
works with kmem caches and kmalloc(). So simplify various places
that only use an rcu callback in order to handle the kmem cache
case.
- Convert the pipe code to use a lockdep comparison function instead
of open-coding the nesting making lockdep validation easier.
- Move code into fs-writeback.c that was located in a header but can
be made static as it's only used in that one file.
- Rewrite the alignment checking iterators for iovec and bvec to be
easier to read, and also significantly more compact in terms of
generated code. This saves 270 bytes of text on x86-64 (with
clang-18) and 224 bytes on arm64 (with gcc-13). In profiles it also
saves a bit of time for the same workload.
- Switch various places to use KMEM_CACHE instead of
kmem_cache_create().
- Use inode_set_ctime_to_ts() in inode_set_ctime_current()
- Use kzalloc() in name_to_handle_at() to avoid kernel infoleak.
- Various smaller cleanups for eventfds.
Fixes:
- Fix various comments and typos, and unneeded initializations.
- Fix stack allocation hack for clang in the select code.
- Improve dump_mapping() debug code on a best-effort basis.
- Fix build errors in various selftests.
- Avoid wrap-around instrumentation in various places.
- Don't allow user namespaces without an idmapping to be used for
idmapped mounts.
- Fix sysv sb_read() call.
- Fix fallback implementation of the get_name() export operation"
* tag 'vfs-6.9.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (70 commits)
hugetlbfs: support idmapped mounts
qnx4: convert qnx4 to use the new mount api
fs: use inode_set_ctime_to_ts to set inode ctime to current time
libfs: Drop generic_set_encrypted_ci_d_ops
ubifs: Configure dentry operations at dentry-creation time
f2fs: Configure dentry operations at dentry-creation time
ext4: Configure dentry operations at dentry-creation time
libfs: Add helper to choose dentry operations at mount-time
libfs: Merge encrypted_ci_dentry_ops and ci_dentry_ops
fscrypt: Drop d_revalidate once the key is added
fscrypt: Drop d_revalidate for valid dentries during lookup
fscrypt: Factor out a helper to configure the lookup dentry
ovl: Always reject mounting over case-insensitive directories
libfs: Attempt exact-match comparison first during casefolded lookup
efs: remove SLAB_MEM_SPREAD flag usage
jfs: remove SLAB_MEM_SPREAD flag usage
minix: remove SLAB_MEM_SPREAD flag usage
openpromfs: remove SLAB_MEM_SPREAD flag usage
proc: remove SLAB_MEM_SPREAD flag usage
qnx6: remove SLAB_MEM_SPREAD flag usage
...
|
||
|
Linus Torvalds
|
97ec9715a8 |
linux_kselftest-kunit-6.9-rc1
This KUnit next update for Linux 6.9-rc1 consists of:
-- fix to make kunit_bus_type const
-- kunit tool change to Print UML command
-- DRM device creation helpers are now using the new kunit device
creation helpers. This change resulted in DRM helpers switching
from using a platform_device, to a dedicated bus and device type
used by kunit. kunit devices don't set DMA mask and this caused
regression on some drm tests as they can't allocate DMA buffers.
Fix this problem by setting DMA masks on the kunit device during
initialization.
-- KUnit has several macros which accept a log message, which can
contain printf format specifiers. Some of these (the explicit
log macros) already use the __printf() gcc attribute to ensure
the format specifiers are valid, but those which could fail the
test, and hence used __kunit_do_failed_assertion() behind the scenes,
did not.
These include: KUNIT_EXPECT_*_MSG(), KUNIT_ASSERT_*_MSG(), and
KUNIT_FAIL()
A 9 patch series adds the __printf() attribute, and fixes all of
the issues uncovered.
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Merge tag 'linux_kselftest-kunit-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull KUnit updates from Shuah Khan:
- fix to make kunit_bus_type const
- kunit tool change to Print UML command
- DRM device creation helpers are now using the new kunit device
creation helpers. This change resulted in DRM helpers switching from
using a platform_device, to a dedicated bus and device type used by
kunit. kunit devices don't set DMA mask and this caused regression on
some drm tests as they can't allocate DMA buffers. Fix this problem
by setting DMA masks on the kunit device during initialization.
- KUnit has several macros which accept a log message, which can
contain printf format specifiers. Some of these (the explicit log
macros) already use the __printf() gcc attribute to ensure the format
specifiers are valid, but those which could fail the test, and hence
used __kunit_do_failed_assertion() behind the scenes, did not.
These include: KUNIT_EXPECT_*_MSG(), KUNIT_ASSERT_*_MSG(), and
KUNIT_FAIL()
A nine-patch series adds the __printf() attribute, and fixes all of
the issues uncovered.
* tag 'linux_kselftest-kunit-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: Annotate _MSG assertion variants with gnu printf specifiers
drm: tests: Fix invalid printf format specifiers in KUnit tests
drm/xe/tests: Fix printf format specifiers in xe_migrate test
net: test: Fix printf format specifier in skb_segment kunit test
rtc: test: Fix invalid format specifier.
time: test: Fix incorrect format specifier
lib: memcpy_kunit: Fix an invalid format specifier in an assertion msg
lib/cmdline: Fix an invalid format specifier in an assertion msg
kunit: test: Log the correct filter string in executor_test
kunit: Setup DMA masks on the kunit device
kunit: make kunit_bus_type const
kunit: Mark filter* params as rw
kunit: tool: Print UML command
|
||
|
Linus Torvalds
|
d451b075f7 |
linux_kselftest-next-6.9-rc1
This kselftest next update for Linux 6.9-rc1 consists of:
-- livepatch restructuring to move the module out of lib to be
built as a out-of-tree modules during kselftest build. This
change makes it easier change, debug and rebuild the tests by
running make on the selftests/livepatch directory, which is not
currently possible since the modules on lib/livepatch are build
and installed using the main makefile modules target.
-- livepatch restructuring fixes for problems found by kernel test
robot. The change skips the test if kernel-devel isn't installed
(default value of KDIR), or if KDIR variable passed doesn't exists.
-- resctrl test restructuring and new non-contiguous CBMs CAT test
-- new ktap_helpers to print diagnostic messages, pass/fail tests
based on exit code, abort test, and finish the test.
-- a new test verify power supply properties.
-- a new ftrace to exercise function tracer across cpu hotplug.
-- timeout increase for mqueue test to allow the test to run on
i3.metal AWS instances.
-- minor spelling corrections in several tests.
-- missing gitignore files and changes to existing gitignore files.
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Merge tag 'linux_kselftest-next-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest update from Shuah Khan:
- livepatch restructuring to move the module out of lib to be built as
a out-of-tree modules during kselftest build. This makes it easier
change, debug and rebuild the tests by running make on the
selftests/livepatch directory, which is not currently possible since
the modules on lib/livepatch are build and installed using the main
makefile modules target.
- livepatch restructuring fixes for problems found by kernel test
robot. The change skips the test if kernel-devel isn't installed
(default value of KDIR), or if KDIR variable passed doesn't exists.
- resctrl test restructuring and new non-contiguous CBMs CAT test
- new ktap_helpers to print diagnostic messages, pass/fail tests based
on exit code, abort test, and finish the test.
- a new test verify power supply properties.
- a new ftrace to exercise function tracer across cpu hotplug.
- timeout increase for mqueue test to allow the test to run on i3.metal
AWS instances.
- minor spelling corrections in several tests.
- missing gitignore files and changes to existing gitignore files.
* tag 'linux_kselftest-next-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (57 commits)
kselftest: Add basic test for probing the rust sample modules
selftests: lib.mk: Do not process TEST_GEN_MODS_DIR
selftests: livepatch: Avoid running the tests if kernel-devel is missing
selftests: livepatch: Add initial .gitignore
selftests/resctrl: Add non-contiguous CBMs CAT test
selftests/resctrl: Add resource_info_file_exists()
selftests/resctrl: Split validate_resctrl_feature_request()
selftests/resctrl: Add a helper for the non-contiguous test
selftests/resctrl: Add test groups and name L3 CAT test L3_CAT
selftests: sched: Fix spelling mistake "hiearchy" -> "hierarchy"
selftests/mqueue: Set timeout to 180 seconds
selftests/ftrace: Add test to exercize function tracer across cpu hotplug
selftest: ftrace: fix minor typo in log
selftests: thermal: intel: workload_hint: add missing gitignore
selftests: thermal: intel: power_floor: add missing gitignore
selftests: uevent: add missing gitignore
selftests: Add test to verify power supply properties
selftests: ktap_helpers: Add a helper to finish the test
selftests: ktap_helpers: Add a helper to abort the test
selftests: ktap_helpers: Add helper to pass/fail test based on exit code
...
|
||
Andrii Nakryiko
|
365c2b3279 |
selftests/bpf: Add fexit and kretprobe triggering benchmarks
We already have kprobe and fentry benchmarks. Let's add kretprobe and fexit ones for completeness. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: https://lore.kernel.org/bpf/20240309005124.3004446-1-andrii@kernel.org |
||
|
Paolo Bonzini
|
e9a2bba476 |
KVM Xen and pfncache changes for 6.9:
- Rip out the half-baked support for using gfn_to_pfn caches to manage pages
that are "mapped" into guests via physical addresses.
- Add support for using gfn_to_pfn caches with only a host virtual address,
i.e. to bypass the "gfn" stage of the cache. The primary use case is
overlay pages, where the guest may change the gfn used to reference the
overlay page, but the backing hva+pfn remains the same.
- Add an ioctl() to allow mapping Xen's shared_info page using an hva instead
of a gpa, so that userspace doesn't need to reconfigure and invalidate the
cache/mapping if the guest changes the gpa (but userspace keeps the resolved
hva the same).
- When possible, use a single host TSC value when computing the deadline for
Xen timers in order to improve the accuracy of the timer emulation.
- Inject pending upcall events when the vCPU software-enables its APIC to fix
a bug where an upcall can be lost (and to follow Xen's behavior).
- Fall back to the slow path instead of warning if "fast" IRQ delivery of Xen
events fails, e.g. if the guest has aliased xAPIC IDs.
- Extend gfn_to_pfn_cache's mutex to cover (de)activation (in addition to
refresh), and drop a now-redundant acquisition of xen_lock (that was
protecting the shared_info cache) to fix a deadlock due to recursively
acquiring xen_lock.
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Merge tag 'kvm-x86-xen-6.9' of https://github.com/kvm-x86/linux into HEAD
KVM Xen and pfncache changes for 6.9:
- Rip out the half-baked support for using gfn_to_pfn caches to manage pages
that are "mapped" into guests via physical addresses.
- Add support for using gfn_to_pfn caches with only a host virtual address,
i.e. to bypass the "gfn" stage of the cache. The primary use case is
overlay pages, where the guest may change the gfn used to reference the
overlay page, but the backing hva+pfn remains the same.
- Add an ioctl() to allow mapping Xen's shared_info page using an hva instead
of a gpa, so that userspace doesn't need to reconfigure and invalidate the
cache/mapping if the guest changes the gpa (but userspace keeps the resolved
hva the same).
- When possible, use a single host TSC value when computing the deadline for
Xen timers in order to improve the accuracy of the timer emulation.
- Inject pending upcall events when the vCPU software-enables its APIC to fix
a bug where an upcall can be lost (and to follow Xen's behavior).
- Fall back to the slow path instead of warning if "fast" IRQ delivery of Xen
events fails, e.g. if the guest has aliased xAPIC IDs.
- Extend gfn_to_pfn_cache's mutex to cover (de)activation (in addition to
refresh), and drop a now-redundant acquisition of xen_lock (that was
protecting the shared_info cache) to fix a deadlock due to recursively
acquiring xen_lock.
|
||
|
Paolo Bonzini
|
e9025cdd8c |
KVM x86 PMU changes for 6.9:
- Fix several bugs where KVM speciously prevents the guest from utilizing
fixed counters and architectural event encodings based on whether or not
guest CPUID reports support for the _architectural_ encoding.
- Fix a variety of bugs in KVM's emulation of RDPMC, e.g. for "fast" reads,
priority of VMX interception vs #GP, PMC types in architectural PMUs, etc.
- Add a selftest to verify KVM correctly emulates RDMPC, counter availability,
and a variety of other PMC-related behaviors that depend on guest CPUID,
i.e. are difficult to validate via KVM-Unit-Tests.
- Zero out PMU metadata on AMD if the virtual PMU is disabled to avoid wasting
cycles, e.g. when checking if a PMC event needs to be synthesized when
skipping an instruction.
- Optimize triggering of emulated events, e.g. for "count instructions" events
when skipping an instruction, which yields a ~10% performance improvement in
VM-Exit microbenchmarks when a vPMU is exposed to the guest.
- Tighten the check for "PMI in guest" to reduce false positives if an NMI
arrives in the host while KVM is handling an IRQ VM-Exit.
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Merge tag 'kvm-x86-pmu-6.9' of https://github.com/kvm-x86/linux into HEAD
KVM x86 PMU changes for 6.9:
- Fix several bugs where KVM speciously prevents the guest from utilizing
fixed counters and architectural event encodings based on whether or not
guest CPUID reports support for the _architectural_ encoding.
- Fix a variety of bugs in KVM's emulation of RDPMC, e.g. for "fast" reads,
priority of VMX interception vs #GP, PMC types in architectural PMUs, etc.
- Add a selftest to verify KVM correctly emulates RDMPC, counter availability,
and a variety of other PMC-related behaviors that depend on guest CPUID,
i.e. are difficult to validate via KVM-Unit-Tests.
- Zero out PMU metadata on AMD if the virtual PMU is disabled to avoid wasting
cycles, e.g. when checking if a PMC event needs to be synthesized when
skipping an instruction.
- Optimize triggering of emulated events, e.g. for "count instructions" events
when skipping an instruction, which yields a ~10% performance improvement in
VM-Exit microbenchmarks when a vPMU is exposed to the guest.
- Tighten the check for "PMI in guest" to reduce false positives if an NMI
arrives in the host while KVM is handling an IRQ VM-Exit.
|
||
|
Paolo Bonzini
|
4d4c02852a |
KVM selftests changes for 6.9:
- Add macros to reduce the amount of boilerplate code needed to write "simple"
selftests, and to utilize selftest TAP infrastructure, which is especially
beneficial for KVM selftests with multiple testcases.
- Add basic smoke tests for SEV and SEV-ES, along with a pile of library
support for handling private/encrypted/protected memory.
- Fix benign bugs where tests neglect to close() guest_memfd files.
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Merge tag 'kvm-x86-selftests-6.9' of https://github.com/kvm-x86/linux into HEAD
KVM selftests changes for 6.9:
- Add macros to reduce the amount of boilerplate code needed to write "simple"
selftests, and to utilize selftest TAP infrastructure, which is especially
beneficial for KVM selftests with multiple testcases.
- Add basic smoke tests for SEV and SEV-ES, along with a pile of library
support for handling private/encrypted/protected memory.
- Fix benign bugs where tests neglect to close() guest_memfd files.
|
||
|
Paolo Bonzini
|
f074158a0d |
KVM/riscv changes for 6.9
- Exception and interrupt handling for selftests - Sstc (aka arch_timer) selftest - Forward seed CSR access to KVM userspace - Ztso extension support for Guest/VM - Zacas extension support for Guest/VM -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEZdn75s5e6LHDQ+f/rUjsVaLHLAcFAmXpXfMACgkQrUjsVaLH LAfZoRAAgIJqgL9jMQ2dliTq8sk24dQQUPo1V2yP7yEYLeUyp/9EAR31ZhBDP1EE yTT0yvEbyn21fxhdHagVnqJXOepHz1MPmGGxEFx96RVib/m80zDhyDKogW6IgP4c e9yXW1Wo6m0R+7aQhn8YA9+47xbmq/cNDCwjlkIp0oL/SyktJdTcPjZUTr524jde dYTGLqSyoQyZMm+wBrJYTiME6nFK3RhKf7V9Mn77VTTFnhIk4J2upl+1kE2pLTAQ Zp3EwXCK1B2D2J1bdOuqclCApglw3H0CM4c81knDaEyB4w/l/OwpuCA+u58tSU9g z6DTO+vYvwlROmfeFjjmHKx1pl9uSktYlFlVqinelW7IG7Y3qDD1zPnbT27OpkLP rFIsF4Dm42MnmcC0sTxaMgKQtMvb56lgpaoa9XHL/DD76pAUvgKoWUnWay+32j1e 8Hhx/PEp16ALGvDfm+9Wo8AgbvrFGl37epe2LXFFr6+zOzmGN+6vATW2EqgJ3Ueo P5TNkcFSyKg61r0moEr/ZSKZNvv8MuVUKSe0EmPykIccqg6oYHAoAJ66FL5yaX1k n/aIVNnIavzwlN6DeaQyjAxZxfSg39Z7wOH5PyKmateYKg9yM8P3RY/DndiO6F3c me9Q0eshu+C7h4YBRXPVstdWkkhCSVa+TN1b/6hnlSP0HLtyHik= =cWpl -----END PGP SIGNATURE----- Merge tag 'kvm-riscv-6.9-1' of https://github.com/kvm-riscv/linux into HEAD KVM/riscv changes for 6.9 - Exception and interrupt handling for selftests - Sstc (aka arch_timer) selftest - Forward seed CSR access to KVM userspace - Ztso extension support for Guest/VM - Zacas extension support for Guest/VM |
||
|
Paolo Bonzini
|
961e2bfcf3 |
KVM/arm64 updates for 6.9
- Infrastructure for building KVM's trap configuration based on the
architectural features (or lack thereof) advertised in the VM's ID
registers
- Support for mapping vfio-pci BARs as Normal-NC (vaguely similar to
x86's WC) at stage-2, improving the performance of interacting with
assigned devices that can tolerate it
- Conversion of KVM's representation of LPIs to an xarray, utilized to
address serialization some of the serialization on the LPI injection
path
- Support for _architectural_ VHE-only systems, advertised through the
absence of FEAT_E2H0 in the CPU's ID register
- Miscellaneous cleanups, fixes, and spelling corrections to KVM and
selftests
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Merge tag 'kvmarm-6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 updates for 6.9
- Infrastructure for building KVM's trap configuration based on the
architectural features (or lack thereof) advertised in the VM's ID
registers
- Support for mapping vfio-pci BARs as Normal-NC (vaguely similar to
x86's WC) at stage-2, improving the performance of interacting with
assigned devices that can tolerate it
- Conversion of KVM's representation of LPIs to an xarray, utilized to
address serialization some of the serialization on the LPI injection
path
- Support for _architectural_ VHE-only systems, advertised through the
absence of FEAT_E2H0 in the CPU's ID register
- Miscellaneous cleanups, fixes, and spelling corrections to KVM and
selftests
|
||
|
Paolo Bonzini
|
233d0bc4d8 |
LoongArch KVM changes for v6.9
1. Set reserved bits as zero in CPUCFG. 2. Start SW timer only when vcpu is blocking. 3. Do not restart SW timer when it is expired. 4. Remove unnecessary CSR register saving during enter guest. -----BEGIN PGP SIGNATURE----- iQJKBAABCAA0FiEEzOlt8mkP+tbeiYy5AoYrw/LiJnoFAmXoeWIWHGNoZW5odWFj YWlAa2VybmVsLm9yZwAKCRAChivD8uImehb3D/9C5IrdyU/2f3fEUuuXO0a2ZS1p l2OT+yr7C6/jATokGcd+53CF8MzYawzuAT3tSXYyoqAxRu0HUkvuS1oA/eFM4EwV iIoUC3jnqcsQ5LCPt6yt+Tzgug64Xm5F4btYWIpmXgCJWx/VVG6+z3JarXAfA2it vgVMGgrrfHt68sEsenNFNgiJ5tCCubjR7XFwjM8rsL7AzUDdmXpF7gFyH2Ufgosi a5CxcPPauO1y5ZCGU4JU9QvxnVqW1kt/TRZIGqqGfULtlBSoZbD9zP3OcCQkL+ai SPNxvU5I+BeX6honpmO6aR/F1EphQhRji3ZKxI8UBo4aJD5+FtMG/YOEPI+ZAS0/ JPuWpDqJH46SN3jfKTQay8jXc+mcnOYXJ9Yrixd4UCf66WJit/+BOma/wP638u2j RUzm1kqhNGad6QiDDtSjISM6sg6FozAGc/KhCkWAhV+lHLnfkXtaf3S+GIu5OiWz ETCKlmIGiy0y774+iftlD7RDRGmtrC4cx5ibl7cKKi62Y5vgujCdDofAyYC+D5cW puaIuHOx1hWtPRT9p1WfUL310ED+Qj3N2pDDcJcqdCIiRRZ5l/hxGS7V687a30WV GcegEqh19CjI9KDat4E1ld4jUHJxaFrw3pr2z3SP7cW3IgdngPJL57M0M2jSazaQ 479xZPJ/i4xhJaKACg== =8HOW -----END PGP SIGNATURE----- Merge tag 'loongarch-kvm-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD LoongArch KVM changes for v6.9 * Set reserved bits as zero in CPUCFG. * Start SW timer only when vcpu is blocking. * Do not restart SW timer when it is expired. * Remove unnecessary CSR register saving during enter guest. |
||
|
Linus Torvalds
|
137e0ec05a |
KVM GUEST_MEMFD fixes for 6.8:
- Make KVM_MEM_GUEST_MEMFD mutually exclusive with KVM_MEM_READONLY to
avoid creating an inconsistent ABI (KVM_MEM_GUEST_MEMFD is not writable
from userspace, so there would be no way to write to a read-only
guest_memfd).
- Update documentation for KVM_SW_PROTECTED_VM to make it abundantly
clear that such VMs are purely for development and testing.
- Limit KVM_SW_PROTECTED_VM guests to the TDP MMU, as the long term plan
is to support confidential VMs with deterministic private memory (SNP
and TDX) only in the TDP MMU.
- Fix a bug in a GUEST_MEMFD dirty logging test that caused false passes.
x86 fixes:
- Fix missing marking of a guest page as dirty when emulating an atomic access.
- Check for mmu_notifier invalidation events before faulting in the pfn,
and before acquiring mmu_lock, to avoid unnecessary work and lock
contention with preemptible kernels (including CONFIG_PREEMPT_DYNAMIC
in non-preemptible mode).
- Disable AMD DebugSwap by default, it breaks VMSA signing and will be
re-enabled with a better VM creation API in 6.10.
- Do the cache flush of converted pages in svm_register_enc_region() before
dropping kvm->lock, to avoid a race with unregistering of the same region
and the consequent use-after-free issue.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"KVM GUEST_MEMFD fixes for 6.8:
- Make KVM_MEM_GUEST_MEMFD mutually exclusive with KVM_MEM_READONLY
to avoid creating an inconsistent ABI (KVM_MEM_GUEST_MEMFD is not
writable from userspace, so there would be no way to write to a
read-only guest_memfd).
- Update documentation for KVM_SW_PROTECTED_VM to make it abundantly
clear that such VMs are purely for development and testing.
- Limit KVM_SW_PROTECTED_VM guests to the TDP MMU, as the long term
plan is to support confidential VMs with deterministic private
memory (SNP and TDX) only in the TDP MMU.
- Fix a bug in a GUEST_MEMFD dirty logging test that caused false
passes.
x86 fixes:
- Fix missing marking of a guest page as dirty when emulating an
atomic access.
- Check for mmu_notifier invalidation events before faulting in the
pfn, and before acquiring mmu_lock, to avoid unnecessary work and
lock contention with preemptible kernels (including
CONFIG_PREEMPT_DYNAMIC in non-preemptible mode).
- Disable AMD DebugSwap by default, it breaks VMSA signing and will
be re-enabled with a better VM creation API in 6.10.
- Do the cache flush of converted pages in svm_register_enc_region()
before dropping kvm->lock, to avoid a race with unregistering of
the same region and the consequent use-after-free issue"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
SEV: disable SEV-ES DebugSwap by default
KVM: x86/mmu: Retry fault before acquiring mmu_lock if mapping is changing
KVM: SVM: Flush pages under kvm->lock to fix UAF in svm_register_enc_region()
KVM: selftests: Add a testcase to verify GUEST_MEMFD and READONLY are exclusive
KVM: selftests: Create GUEST_MEMFD for relevant invalid flags testcases
KVM: x86/mmu: Restrict KVM_SW_PROTECTED_VM to the TDP MMU
KVM: x86: Update KVM_SW_PROTECTED_VM docs to make it clear they're a WIP
KVM: Make KVM_MEM_GUEST_MEMFD mutually exclusive with KVM_MEM_READONLY
KVM: x86: Mark target gfn of emulated atomic instruction as dirty
|
||
Matthieu Baerts (NGI0)
|
c66fb480a3 |
selftests: userspace pm: avoid relaunching pm events
'make_connection' is launched twice: once for IPv4, once for IPv6. But then, the "pm_nl_ctl events" was launched a first time, killed, then relaunched after for no particular reason. We can then move this code, and the generation of the temp file to exchange, to the init part, and remove extra conditions that no longer needed. Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240306-upstream-net-next-20240304-selftests-mptcp-shared-code-shellcheck-v2-12-bc79e6e5e6a0@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Matthieu Baerts (NGI0)
|
2aebd3579d |
selftests: mptcp: simult flows: fix shellcheck warnings
shellcheck recently helped to prevent issues. It is then good to fix the
other harmless issues in order to spot "real" ones later.
Here, two categories of warnings are now ignored:
- SC2317: Command appears to be unreachable. The cleanup() function is
invoked indirectly via the EXIT trap.
- SC2086: Double quote to prevent globbing and word splitting. This is
recommended, but the current usage is correct and there is no need to
do all these modifications to be compliant with this rule.
For the modifications:
- SC2034: ksft_skip appears unused.
- SC2004: $/${} is unnecessary on arithmetic variables.
Now this script is shellcheck (0.9.0) compliant. We can easily spot new
issues.
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20240306-upstream-net-next-20240304-selftests-mptcp-shared-code-shellcheck-v2-11-bc79e6e5e6a0@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
||
|
Matthieu Baerts (NGI0)
|
21781b42f2 |
selftests: mptcp: pm netlink: fix shellcheck warnings
shellcheck recently helped to prevent issues. It is then good to fix the other harmless issues in order to spot "real" ones later. Here, two categories of warnings are now ignored: - SC2317: Command appears to be unreachable. The cleanup() function is invoked indirectly via the EXIT trap. - SC2086: Double quote to prevent globbing and word splitting. This is recommended, but the current usage is correct and there is no need to do all these modifications to be compliant with this rule. For the modifications: - SC2034: ksft_skip appears unused. - SC2154: optstring is referenced but not assigned. - SC2006: Use $(...) notation instead of legacy backticks `...`. Now this script is shellcheck (0.9.0) compliant. We can easily spot new issues. Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240306-upstream-net-next-20240304-selftests-mptcp-shared-code-shellcheck-v2-10-bc79e6e5e6a0@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Matthieu Baerts (NGI0)
|
5751c29134 |
selftests: mptcp: sockopt: fix shellcheck warnings
shellcheck recently helped to prevent issues. It is then good to fix the other harmless issues in order to spot "real" ones later. Here, two categories of warnings are now ignored: - SC2317: Command appears to be unreachable. The cleanup() function is invoked indirectly via the EXIT trap. - SC2086: Double quote to prevent globbing and word splitting. This is recommended, but the current usage is correct and there is no need to do all these modifications to be compliant with this rule. For the modifications: - SC2034: ksft_skip appears unused. - SC2006: Use $(...) notation instead of legacy backticks `...`. - SC2145: Argument mixes string and array. Use * or separate argument. Now this script is shellcheck (0.9.0) compliant. We can easily spot new issues. Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240306-upstream-net-next-20240304-selftests-mptcp-shared-code-shellcheck-v2-9-bc79e6e5e6a0@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Matthieu Baerts (NGI0)
|
e3aae1098f |
selftests: mptcp: connect: fix shellcheck warnings
shellcheck recently helped to prevent issues. It is then good to fix the
other harmless issues in order to spot "real" ones later.
Here, two categories of warnings are now ignored:
- SC2317: Command appears to be unreachable. The cleanup() function is
invoked indirectly via the EXIT trap.
- SC2086: Double quote to prevent globbing and word splitting. This is
recommended, but the current usage is correct and there is no need to
do all these modifications to be compliant with this rule.
For the modifications:
- SC2034: ksft_skip appears unused.
- SC2181: Check exit code directly with e.g. 'if mycmd;', not
indirectly with $?.
- SC2004: $/${} is unnecessary on arithmetic variables.
- SC2155: Declare and assign separately to avoid masking return
values.
- SC2166: Prefer [ p ] && [ q ] as [ p -a q ] is not well defined.
- SC2059: Don't use variables in the printf format string. Use printf
'..%s..' "$foo".
Now this script is shellcheck (0.9.0) compliant. We can easily spot new
issues.
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20240306-upstream-net-next-20240304-selftests-mptcp-shared-code-shellcheck-v2-8-bc79e6e5e6a0@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
||
|
Matthieu Baerts (NGI0)
|
97633aa74d |
selftests: mptcp: diag: fix shellcheck warnings
shellcheck recently helped to prevent issues. It is then good to fix the other harmless issues in order to spot "real" ones later. Here, two categories of warnings are now ignored: - SC2317: Command appears to be unreachable. The cleanup() function is invoked indirectly via the EXIT trap. - SC2086: Double quote to prevent globbing and word splitting. This is recommended, but the current usage is correct and there is no need to do all these modifications to be compliant with this rule. For the modifications: - SC2034: ksft_skip appears unused. - SC2046: Quote '$(get_msk_inuse)' to prevent word splitting. - SC2006: Use $(...) notation instead of legacy backticks `...`. Now this script is shellcheck (0.9.0) compliant. We can easily spot new issues. Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240306-upstream-net-next-20240304-selftests-mptcp-shared-code-shellcheck-v2-7-bc79e6e5e6a0@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Geliang Tang
|
35bc143a85 |
selftests: mptcp: add mptcp_lib_events helper
To avoid duplicated code in different MPTCP selftests, we can add and use helpers defined in mptcp_lib.sh. This patch unifies "pm_nl_ctl events" related code in userspace_pm.sh and mptcp_join.sh into a helper mptcp_lib_events(). Define it in mptcp_lib.sh and use it in both scripts. Note that mptcp_lib_kill_wait is now call before starting 'events' for mptcp_join.sh as well, but that's fine: each test is started from a new netns, so there will not be any existing pid there, and nothing is done when mptcp_lib_kill_wait is called with 0. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240306-upstream-net-next-20240304-selftests-mptcp-shared-code-shellcheck-v2-6-bc79e6e5e6a0@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Geliang Tang
|
df8d3ba55b |
selftests: mptcp: more operations in ns_init/exit
Set more the default sysctl values in mptcp_lib_ns_init(). It is fine to do that everywhere, because they could be overridden latter if needed. mptcp_lib_ns_exit() now also try to remove temp netns files used for the stats even for selftests not using them. That's fine to do that because these files have a unique name. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240306-upstream-net-next-20240304-selftests-mptcp-shared-code-shellcheck-v2-5-bc79e6e5e6a0@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Geliang Tang
|
3a0f9bed3c |
selftests: mptcp: add mptcp_lib_ns_init/exit helpers
Add helpers mptcp_lib_ns_init() and mptcp_lib_ns_exit() in mptcp_lib.sh to initialize and delete the given namespaces. Then every test script can invoke these helpers and use all namespaces. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240306-upstream-net-next-20240304-selftests-mptcp-shared-code-shellcheck-v2-4-bc79e6e5e6a0@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Geliang Tang
|
4214aac14e |
selftests: mptcp: add local variables rndh
This patch adds local variables rndh in do_transfer() functions both in
mptcp_connect.sh and simult_flows.sh, setting it with ${ns1:4}, not the
global variable rndh. The global one is hidden in the next commit.
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20240306-upstream-net-next-20240304-selftests-mptcp-shared-code-shellcheck-v2-3-bc79e6e5e6a0@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
||
|
Geliang Tang
|
3fb8c33ef4 |
selftests: mptcp: add mptcp_lib_check_tools helper
This patch exports check_tools() helper from mptcp_join.sh into mptcp_lib.sh as a public one mptcp_lib_check_tools(). The arguments "ip", "ss", "iptables" and "ip6tables" are passed into this helper to indicate whether to check ip tool, ss tool, iptables and ip6tables tools. This helper can be used in every scripts. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://lore.kernel.org/r/20240306-upstream-net-next-20240304-selftests-mptcp-shared-code-shellcheck-v2-2-bc79e6e5e6a0@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Matthieu Baerts (NGI0)
|
7c2eac6490 |
selftests: mptcp: stop forcing iptables-legacy
Commit |
||
|
Kui-Feng Lee
|
4af9a0bee1 |
selftests/net: fix waiting time for ipv6_gc test in fib_tests.sh.
ipv6_gc fails occasionally. According to the study, fib6_run_gc() using jiffies_round() to round the GC interval could increase the waiting time up to 750ms (3/4 seconds). The timer has a granularity of 512ms at the range 4s to 32s. That means a route with an expiration time E seconds can wait for more than E * 2 + 1 seconds if the GC interval is also E seconds. E * 2 + 2 seconds should be enough for waiting for removing routes. Also remove a check immediately after replacing 5 routes since it is very likely to remove some of routes before completing the last route with a slow environment. Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com> Link: https://lore.kernel.org/r/20240305183949.258473-1-thinker.li@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
Catalin Marinas
|
0c5ade742e |
Merge branches 'for-next/reorg-va-space', 'for-next/rust-for-arm64', 'for-next/misc', 'for-next/daif-cleanup', 'for-next/kselftest', 'for-next/documentation', 'for-next/sysreg' and 'for-next/dpisa', remote-tracking branch 'arm64/for-next/perf' into for-next/core
* arm64/for-next/perf: (39 commits)
docs: perf: Fix build warning of hisi-pcie-pmu.rst
perf: starfive: Only allow COMPILE_TEST for 64-bit architectures
MAINTAINERS: Add entry for StarFive StarLink PMU
docs: perf: Add description for StarFive's StarLink PMU
dt-bindings: perf: starfive: Add JH8100 StarLink PMU
perf: starfive: Add StarLink PMU support
docs: perf: Update usage for target filter of hisi-pcie-pmu
drivers/perf: hisi_pcie: Merge find_related_event() and get_event_idx()
drivers/perf: hisi_pcie: Relax the check on related events
drivers/perf: hisi_pcie: Check the target filter properly
drivers/perf: hisi_pcie: Add more events for counting TLP bandwidth
drivers/perf: hisi_pcie: Fix incorrect counting under metric mode
drivers/perf: hisi_pcie: Introduce hisi_pcie_pmu_get_event_ctrl_val()
drivers/perf: hisi_pcie: Rename hisi_pcie_pmu_{config,clear}_filter()
drivers/perf: hisi: Enable HiSilicon Erratum 162700402 quirk for HIP09
perf/arm_cspmu: Add devicetree support
dt-bindings/perf: Add Arm CoreSight PMU
perf/arm_cspmu: Simplify counter reset
perf/arm_cspmu: Simplify attribute groups
perf/arm_cspmu: Simplify initialisation
...
* for-next/reorg-va-space:
: Reorganise the arm64 kernel VA space in preparation for LPA2 support
: (52-bit VA/PA).
arm64: kaslr: Adjust randomization range dynamically
arm64: mm: Reclaim unused vmemmap region for vmalloc use
arm64: vmemmap: Avoid base2 order of struct page size to dimension region
arm64: ptdump: Discover start of vmemmap region at runtime
arm64: ptdump: Allow all region boundaries to be defined at boot time
arm64: mm: Move fixmap region above vmemmap region
arm64: mm: Move PCI I/O emulation region above the vmemmap region
* for-next/rust-for-arm64:
: Enable Rust support for arm64
arm64: rust: Enable Rust support for AArch64
rust: Refactor the build target to allow the use of builtin targets
* for-next/misc:
: Miscellaneous arm64 patches
ARM64: Dynamically allocate cpumasks and increase supported CPUs to 512
arm64: Remove enable_daif macro
arm64/hw_breakpoint: Directly use ESR_ELx_WNR for an watchpoint exception
arm64: cpufeatures: Clean up temporary variable to simplify code
arm64: Update setup_arch() comment on interrupt masking
arm64: remove unnecessary ifdefs around is_compat_task()
arm64: ftrace: Don't forbid CALL_OPS+CC_OPTIMIZE_FOR_SIZE with Clang
arm64/sme: Ensure that all fields in SMCR_EL1 are set to known values
arm64/sve: Ensure that all fields in ZCR_EL1 are set to known values
arm64/sve: Document that __SVE_VQ_MAX is much larger than needed
arm64: make member of struct pt_regs and it's offset macro in the same order
arm64: remove unneeded BUILD_BUG_ON assertion
arm64: kretprobes: acquire the regs via a BRK exception
arm64: io: permit offset addressing
arm64: errata: Don't enable workarounds for "rare" errata by default
* for-next/daif-cleanup:
: Clean up DAIF handling for EL0 returns
arm64: Unmask Debug + SError in do_notify_resume()
arm64: Move do_notify_resume() to entry-common.c
arm64: Simplify do_notify_resume() DAIF masking
* for-next/kselftest:
: Miscellaneous arm64 kselftest patches
kselftest/arm64: Test that ptrace takes effect in the target process
* for-next/documentation:
: arm64 documentation patches
arm64/sme: Remove spurious 'is' in SME documentation
arm64/fp: Clarify effect of setting an unsupported system VL
arm64/sme: Fix cut'n'paste in ABI document
arm64/sve: Remove bitrotted comment about syscall behaviour
* for-next/sysreg:
: sysreg updates
arm64/sysreg: Update ID_AA64DFR0_EL1 register
arm64/sysreg: Update ID_DFR0_EL1 register fields
arm64/sysreg: Add register fields for ID_AA64DFR1_EL1
* for-next/dpisa:
: Support for 2023 dpISA extensions
kselftest/arm64: Add 2023 DPISA hwcap test coverage
kselftest/arm64: Add basic FPMR test
kselftest/arm64: Handle FPMR context in generic signal frame parser
arm64/hwcap: Define hwcaps for 2023 DPISA features
arm64/ptrace: Expose FPMR via ptrace
arm64/signal: Add FPMR signal handling
arm64/fpsimd: Support FEAT_FPMR
arm64/fpsimd: Enable host kernel access to FPMR
arm64/cpufeature: Hook new identification registers up to cpufeature
|
||
|
Jakub Kicinski
|
e3afe5dd3a |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. No conflicts. Adjacent changes: net/core/page_pool_user.c |
||
|
Linus Torvalds
|
df4793505a |
Including fixes from bpf, ipsec and netfilter.
No solution yet for the stmmac issue mentioned in the last PR,
but it proved to be a lockdep false positive, not a blocker.
Current release - regressions:
- dpll: move all dpll<>netdev helpers to dpll code, fix build
regression with old compilers
Current release - new code bugs:
- page_pool: fix netlink dump stop/resume
Previous releases - regressions:
- bpf: fix verifier to check bpf_func_state->callback_depth when pruning
states as otherwise unsafe programs could get accepted
- ipv6: avoid possible UAF in ip6_route_mpath_notify()
- ice: reconfig host after changing MSI-X on VF
- mlx5:
- e-switch, change flow rule destination checking
- add a memory barrier to prevent a possible null-ptr-deref
- switch to using _bh variant of of spinlock where needed
Previous releases - always broken:
- netfilter: nf_conntrack_h323: add protection for bmp length out of range
- bpf: fix to zero-initialise xdp_rxq_info struct before running XDP
program in CPU map which led to random xdp_md fields
- xfrm: fix UDP encapsulation in TX packet offload
- netrom: fix data-races around sysctls
- ice:
- fix potential NULL pointer dereference in ice_bridge_setlink()
- fix uninitialized dplls mutex usage
- igc: avoid returning frame twice in XDP_REDIRECT
- i40e: disable NAPI right after disabling irqs when handling xsk_pool
- geneve: make sure to pull inner header in geneve_rx()
- sparx5: fix use after free inside sparx5_del_mact_entry
- dsa: microchip: fix register write order in ksz8_ind_write8()
Misc:
- selftests: mptcp: fixes for diag.sh
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.8-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from bpf, ipsec and netfilter.
No solution yet for the stmmac issue mentioned in the last PR, but it
proved to be a lockdep false positive, not a blocker.
Current release - regressions:
- dpll: move all dpll<>netdev helpers to dpll code, fix build
regression with old compilers
Current release - new code bugs:
- page_pool: fix netlink dump stop/resume
Previous releases - regressions:
- bpf: fix verifier to check bpf_func_state->callback_depth when
pruning states as otherwise unsafe programs could get accepted
- ipv6: avoid possible UAF in ip6_route_mpath_notify()
- ice: reconfig host after changing MSI-X on VF
- mlx5:
- e-switch, change flow rule destination checking
- add a memory barrier to prevent a possible null-ptr-deref
- switch to using _bh variant of of spinlock where needed
Previous releases - always broken:
- netfilter: nf_conntrack_h323: add protection for bmp length out of
range
- bpf: fix to zero-initialise xdp_rxq_info struct before running XDP
program in CPU map which led to random xdp_md fields
- xfrm: fix UDP encapsulation in TX packet offload
- netrom: fix data-races around sysctls
- ice:
- fix potential NULL pointer dereference in ice_bridge_setlink()
- fix uninitialized dplls mutex usage
- igc: avoid returning frame twice in XDP_REDIRECT
- i40e: disable NAPI right after disabling irqs when handling
xsk_pool
- geneve: make sure to pull inner header in geneve_rx()
- sparx5: fix use after free inside sparx5_del_mact_entry
- dsa: microchip: fix register write order in ksz8_ind_write8()
Misc:
- selftests: mptcp: fixes for diag.sh"
* tag 'net-6.8-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (63 commits)
net: pds_core: Fix possible double free in error handling path
netrom: Fix data-races around sysctl_net_busy_read
netrom: Fix a data-race around sysctl_netrom_link_fails_count
netrom: Fix a data-race around sysctl_netrom_routing_control
netrom: Fix a data-race around sysctl_netrom_transport_no_activity_timeout
netrom: Fix a data-race around sysctl_netrom_transport_requested_window_size
netrom: Fix a data-race around sysctl_netrom_transport_busy_delay
netrom: Fix a data-race around sysctl_netrom_transport_acknowledge_delay
netrom: Fix a data-race around sysctl_netrom_transport_maximum_tries
netrom: Fix a data-race around sysctl_netrom_transport_timeout
netrom: Fix data-races around sysctl_netrom_network_ttl_initialiser
netrom: Fix a data-race around sysctl_netrom_obsolescence_count_initialiser
netrom: Fix a data-race around sysctl_netrom_default_path_quality
netfilter: nf_conntrack_h323: Add protection for bmp length out of range
netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout
netfilter: nft_ct: fix l3num expectations with inet pseudo family
netfilter: nf_tables: reject constant set with timeout
netfilter: nf_tables: disallow anonymous set with timeout flag
net/rds: fix WARNING in rds_conn_connect_if_down
net: dsa: microchip: fix register write order in ksz8_ind_write8()
...
|
||
Mark Brown
|
44d10c27bd |
kselftest/arm64: Add 2023 DPISA hwcap test coverage
Add the hwcaps added for the 2023 DPISA extensions to the hwcaps test program. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20240306-arm64-2023-dpisa-v5-9-c568edc8ed7f@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
||
|
Mark Brown
|
7bcebadda0 |
kselftest/arm64: Add basic FPMR test
Verify that a FPMR frame is generated on systems that support FPMR and not generated otherwise. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20240306-arm64-2023-dpisa-v5-8-c568edc8ed7f@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
||
|
Mark Brown
|
f4dcccdda5 |
kselftest/arm64: Handle FPMR context in generic signal frame parser
Teach the generic signal frame parsing code about the newly added FPMR frame, avoiding warnings every time one is generated. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20240306-arm64-2023-dpisa-v5-7-c568edc8ed7f@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
||
Mickaël Salaün
|
41cca0542d |
selftests/harness: Fix TEST_F()'s vfork handling
Always run fixture setup in the grandchild process, and by default also
run the teardown in the same process. However, this change makes it
possible to run the teardown in a parent process when
_metadata->teardown_parent is set to true (e.g. in fixture setup).
Fix TEST_SIGNAL() by forwarding grandchild's signal to its parent. Fix
seccomp tests by running the test setup in the parent of the test
thread, as expected by the related test code. Fix Landlock tests by
waiting for the grandchild before processing _metadata.
Use of exit(3) in tests should be OK because the environment in which
the vfork(2) call happen is already dedicated to the running test (with
flushed stdio, setpgrp() call), see __run_test() and the call to fork(2)
just before running the setup/test/teardown. Even if the test
configures its own exit handlers, they will not be run by the parent
because it never calls exit(3), and the test function either ends with a
call to _exit(2) or a signal.
Cc: Günther Noack <gnoack@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Will Drewry <wad@chromium.org>
Fixes:
|
||
Eduard Zingerman
|
5208930a90 |
selftests/bpf: Test cases for '?' in BTF names
Two test cases to verify that '?' and other printable characters are allowed in BTF DATASEC names: - DATASEC with name "?.foo bar:buz" should be accepted; - type with name "?foo" should be rejected. Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20240306104529.6453-16-eddyz87@gmail.com |
||
|
Eduard Zingerman
|
733e5e8754 |
selftests/bpf: Test case for SEC("?.struct_ops")
Check that "?.struct_ops" and "?.struct_ops.link" section names define struct_ops maps with autocreate == false after open. Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20240306104529.6453-14-eddyz87@gmail.com |
||
|
Eduard Zingerman
|
651d49f15b |
selftests/bpf: Verify struct_ops autoload/autocreate sync
Check that autocreate flags of struct_ops map cause autoload of struct_ops corresponding programs: - when struct_ops program is referenced only from a map for which autocreate is set to false, that program should not be loaded; - when struct_ops program with autoload == false is set to be used from a map with autocreate == true using shadow var, that program should be loaded; - when struct_ops program is not referenced from any map object load should fail. Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20240306104529.6453-10-eddyz87@gmail.com |
||
|
Eduard Zingerman
|
1863acccdf |
selftests/bpf: Test autocreate behavior for struct_ops maps
Check that bpf_map__set_autocreate() can be used to disable automatic creation for struct_ops maps. Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20240306104529.6453-8-eddyz87@gmail.com |