The use of kmap() is being deprecated in favor of kmap_local_page()
where it is feasible. For kmap around a memcpy there's a convenience
helper memcpy_to_page that also makes the flush_dcache_page() redundant.
CC: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: David Sterba <dsterba@suse.com>
- Remove unused generic cpuidle support (replaced by PSCI version)
- Fix documentation describing the kernel virtual address space
- Handling of some new CPU errata in Arm implementations
- Rework of our exception table code in preparation for handling
machine checks (i.e. RAS errors) more gracefully
- Switch over to the generic implementation of ioremap()
- Fix lockdep tracking in NMI context
- Instrument our memory barrier macros for KCSAN
- Rework of the kPTI G->nG page-table repainting so that the MMU remains
enabled and the boot time is no longer slowed to a crawl for systems
which require the late remapping
- Enable support for direct swapping of 2MiB transparent huge-pages on
systems without MTE
- Fix handling of MTE tags with allocating new pages with HW KASAN
- Expose the SMIDR register to userspace via sysfs
- Continued rework of the stack unwinder, particularly improving the
behaviour under KASAN
- More repainting of our system register definitions to match the
architectural terminology
- Improvements to the layout of the vDSO objects
- Support for allocating additional bits of HWCAP2 and exposing
FEAT_EBF16 to userspace on CPUs that support it
- Considerable rework and optimisation of our early boot code to reduce
the need for cache maintenance and avoid jumping in and out of the
kernel when handling relocation under KASLR
- Support for disabling SVE and SME support on the kernel command-line
- Support for the Hisilicon HNS3 PMU
- Miscellanous cleanups, trivial updates and minor fixes
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"Highlights include a major rework of our kPTI page-table rewriting
code (which makes it both more maintainable and considerably faster in
the cases where it is required) as well as significant changes to our
early boot code to reduce the need for data cache maintenance and
greatly simplify the KASLR relocation dance.
Summary:
- Remove unused generic cpuidle support (replaced by PSCI version)
- Fix documentation describing the kernel virtual address space
- Handling of some new CPU errata in Arm implementations
- Rework of our exception table code in preparation for handling
machine checks (i.e. RAS errors) more gracefully
- Switch over to the generic implementation of ioremap()
- Fix lockdep tracking in NMI context
- Instrument our memory barrier macros for KCSAN
- Rework of the kPTI G->nG page-table repainting so that the MMU
remains enabled and the boot time is no longer slowed to a crawl
for systems which require the late remapping
- Enable support for direct swapping of 2MiB transparent huge-pages
on systems without MTE
- Fix handling of MTE tags with allocating new pages with HW KASAN
- Expose the SMIDR register to userspace via sysfs
- Continued rework of the stack unwinder, particularly improving the
behaviour under KASAN
- More repainting of our system register definitions to match the
architectural terminology
- Improvements to the layout of the vDSO objects
- Support for allocating additional bits of HWCAP2 and exposing
FEAT_EBF16 to userspace on CPUs that support it
- Considerable rework and optimisation of our early boot code to
reduce the need for cache maintenance and avoid jumping in and out
of the kernel when handling relocation under KASLR
- Support for disabling SVE and SME support on the kernel
command-line
- Support for the Hisilicon HNS3 PMU
- Miscellanous cleanups, trivial updates and minor fixes"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (136 commits)
arm64: Delay initialisation of cpuinfo_arm64::reg_{zcr,smcr}
arm64: fix KASAN_INLINE
arm64/hwcap: Support FEAT_EBF16
arm64/cpufeature: Store elf_hwcaps as a bitmap rather than unsigned long
arm64/hwcap: Document allocation of upper bits of AT_HWCAP
arm64: enable THP_SWAP for arm64
arm64/mm: use GENMASK_ULL for TTBR_BADDR_MASK_52
arm64: errata: Remove AES hwcap for COMPAT tasks
arm64: numa: Don't check node against MAX_NUMNODES
drivers/perf: arm_spe: Fix consistency of SYS_PMSCR_EL1.CX
perf: RISC-V: Add of_node_put() when breaking out of for_each_of_cpu_node()
docs: perf: Include hns3-pmu.rst in toctree to fix 'htmldocs' WARNING
arm64: kasan: Revert "arm64: mte: reset the page tag in page->flags"
mm: kasan: Skip page unpoisoning only if __GFP_SKIP_KASAN_UNPOISON
mm: kasan: Skip unpoisoning of user pages
mm: kasan: Ensure the tags are visible before the tag in page->flags
drivers/perf: hisi: add driver for HNS3 PMU
drivers/perf: hisi: Add description for HNS3 PMU driver
drivers/perf: riscv_pmu_sbi: perf format
perf/arm-cci: Use the bitmap API to allocate bitmaps
...
- Use RNG seed from bootinfo block on virt platform,
- Defconfig updates,
- Minor fixes and improvements.
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Merge tag 'm68k-for-v5.20-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven:
- Use RNG seed from bootinfo block on virt platform
- defconfig updates
- Minor fixes and improvements
* tag 'm68k-for-v5.20-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: defconfig: Update defconfigs for v5.19-rc1
m68k: Add common forward declaration for show_registers()
m68k: mac: Remove forward declaration for mac_nmi_handler()
m68k: virt: Fix missing platform_device_unregister() on error in virt_platform_init()
m68k: virt: Use RNG seed from bootinfo block
m68k: bitops: Change __fls to return and accept unsigned long
m68k: Kconfig.machine: Add endif comment
m68k: Kconfig.debug: Replace single quotes
m68k: Kconfig.cpu: Fix indentation and add endif comments
m68k: q40: Align '*' in comments
m68k: sun3: Use __func__ to get function's name in an output message
m68k: mac: Fix typos in comments
m68k: virt: Kconfig minor fixes
loader
- Add the ability to pass the IMA measurement of kernel and bootloader
to the kexec-ed kernel
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Merge tag 'x86_kdump_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 kdump updates from Borislav Petkov:
- Add the ability to pass early an RNG seed to the kernel from the boot
loader
- Add the ability to pass the IMA measurement of kernel and bootloader
to the kexec-ed kernel
* tag 'x86_kdump_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/setup: Use rng seeds from setup_data
x86/kexec: Carry forward IMA measurement log on kexec
- Other Kbuild improvements and fixes
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Merge tag 'x86_build_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build updates from Borislav Petkov:
- Fix stack protector builds when cross compiling with Clang
- Other Kbuild improvements and fixes
* tag 'x86_build_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/purgatory: Omit use of bin2c
x86/purgatory: Hard-code obj-y in Makefile
x86/build: Remove unused OBJECT_FILES_NON_STANDARD_test_nx.o
x86/Kconfig: Fix CONFIG_CC_HAS_SANE_STACKPROTECTOR when cross compiling with clang
pr_warn_once() change broke that
- Simplify {JMP,CALL}_NOSPEC and let the objtool retpoline patching
infra take care of them instead of having unreadable alternative macros
there
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Merge tag 'x86_core_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 core updates from Borislav Petkov:
- Have invalid MSR accesses warnings appear only once after a
pr_warn_once() change broke that
- Simplify {JMP,CALL}_NOSPEC and let the objtool retpoline patching
infra take care of them instead of having unreadable alternative
macros there
* tag 'x86_core_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/extable: Fix ex_handler_msr() print condition
x86,nospec: Simplify {JMP,CALL}_NOSPEC
- Free the pmem platform device on the registration error path
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Merge tag 'x86_misc_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull misc x86 updates from Borislav Petkov:
- Add a bunch of PCI IDs for new AMD CPUs and use them in k10temp
- Free the pmem platform device on the registration error path
* tag 'x86_misc_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
hwmon: (k10temp): Add support for new family 17h and 19h models
x86/amd_nb: Add AMD PCI IDs for SMN communication
x86/pmem: Fix platform-device leak in error path
- Respect idle=nomwait when supplied on the kernel cmdline
- Two small cleanups
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Merge tag 'x86_cpu_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu updates from Borislav Petkov:
- Remove the vendor check when selecting MWAIT as the default idle
state
- Respect idle=nomwait when supplied on the kernel cmdline
- Two small cleanups
* tag 'x86_cpu_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu: Use MSR_IA32_MISC_ENABLE constants
x86: Fix comment for X86_FEATURE_ZEN
x86: Remove vendor checks from prefer_mwait_c1_over_halt
x86: Handle idle=nomwait cmdline properly for x86_idle
be able to enter deeper low-power state
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Merge tag 'x86_fpu_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fpu update from Borislav Petkov:
- Add machinery to initialize AMX register state in order for
AMX-capable CPUs to be able to enter deeper low-power state
* tag 'x86_fpu_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
intel_idle: Add a new flag to initialize the AMX state
x86/fpu: Add a helper to prepare AMX state for low-power CPU idle
- Update pkeys documentation
- Avoid reading contended mm's TLB generation var if not absolutely
necessary along with fixing a case where arch_tlbbatch_flush() doesn't
adhere to the generation scheme and thus violates the conditions for the
above avoidance.
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Merge tag 'x86_mm_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm updates from Borislav Petkov:
- Rename a PKRU macro to make more sense when reading the code
- Update pkeys documentation
- Avoid reading contended mm's TLB generation var if not absolutely
necessary along with fixing a case where arch_tlbbatch_flush()
doesn't adhere to the generation scheme and thus violates the
conditions for the above avoidance.
* tag 'x86_mm_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm/tlb: Ignore f->new_tlb_gen when zero
x86/pkeys: Clarify PKRU_AD_KEY macro
Documentation/protection-keys: Clean up documentation for User Space pkeys
x86/mm/tlb: Avoid reading mm_tlb_gen when possible
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Merge tag 'x86_cleanups_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanup from Borislav Petkov:
- A single CONFIG_ symbol correction in a comment
* tag 'x86_cleanups_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Refer to the intended config STRICT_DEVMEM in a comment
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Merge tag 'x86_vmware_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 vmware cleanup from Borislav Petkov:
- A single statement simplification by using the BIT() macro
* tag 'x86_vmware_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/vmware: Use BIT() macro for shifting
when injecting errors on AMD platforms. In some cases, the platform
could prohibit those.
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Merge tag 'ras_core_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RAS update from Borislav Petkov:
"A single RAS change:
- Probe whether hardware error injection (direct MSR writes) is
possible when injecting errors on AMD platforms. In some cases, the
platform could prohibit those"
* tag 'ras_core_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce: Check whether writes to MCA_STATUS are getting ignored
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Merge tag 'fs.idmapped.overlay.acl.v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull acl updates from Christian Brauner:
"Last cycle we introduced support for mounting overlayfs on top of
idmapped mounts. While looking into additional testing we realized
that posix acls don't really work correctly with stacking filesystems
on top of idmapped layers.
We already knew what the fix were but it would require work that is
more suitable for the merge window so we turned off posix acls for
v5.19 for overlayfs on top of idmapped layers with Miklos routing my
patch upstream in 72a8e05d4f ("Merge tag 'ovl-fixes-5.19-rc7' [..]").
This contains the work to support posix acls for overlayfs on top of
idmapped layers. Since the posix acl fixes should use the new
vfs{g,u}id_t work the associated branch has been merged in. (We sent a
pull request for this earlier.)
We've also pulled in Miklos pull request containing my patch to turn
of posix acls on top of idmapped layers. This allowed us to avoid
rebasing the branch which we didn't like because we were already at
rc7 by then. Merging it in allows this branch to first fix posix acls
and then to cleanly revert the temporary fix it brought in by commit
4a47c6385b ("ovl: turn of SB_POSIXACL with idmapped layers
temporarily").
The last patch in this series adds Seth Forshee as a co-maintainer for
idmapped mounts. Seth has been integral to all of this work and is
also the main architect behind the filesystem idmapping work which
ultimately made filesystems such as FUSE and overlayfs available in
containers. He continues to be active in both development and review.
I'm very happy he decided to help and he has my full trust. This
increases the bus factor which is always great for work like this. I'm
honestly very excited about this because I think in general we don't
do great in the bringing on new maintainers department"
For more explanations of the ACL issues, see
https://lore.kernel.org/all/20220801145520.1532837-1-brauner@kernel.org/
* tag 'fs.idmapped.overlay.acl.v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
Add Seth Forshee as co-maintainer for idmapped mounts
Revert "ovl: turn of SB_POSIXACL with idmapped layers temporarily"
ovl: handle idmappings in ovl_get_acl()
acl: make posix_acl_clone() available to overlayfs
acl: port to vfs{g,u}id_t
acl: move idmapped mount fixup into vfs_{g,s}etxattr()
mnt_idmapping: add vfs[g,u]id_into_k[g,u]id()
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Merge tag 'fs.idmapped.vfsuid.v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull fs idmapping updates from Christian Brauner:
"This introduces the new vfs{g,u}id_t types we agreed on. Similar to
k{g,u}id_t the new types are just simple wrapper structs around
regular {g,u}id_t types.
They allow to establish a type safety boundary in the VFS for idmapped
mounts preventing confusion betwen {g,u}ids mapped into an idmapped
mount and {g,u}ids mapped into the caller's or the filesystem's
idmapping.
An initial set of helpers is introduced that allows to operate on
vfs{g,u}id_t types. We will remove all references to non-type safe
idmapped mounts helpers in the very near future. The patches do
already exist.
This converts the core attribute changing codepaths which become
significantly easier to reason about because of this change.
Just a few highlights here as the patches give detailed overviews of
what is happening in the commit messages:
- The kernel internal struct iattr contains type safe vfs{g,u}id_t
values clearly communicating that these values have to take a given
mount's idmapping into account.
- The ownership values placed in struct iattr to change ownership are
identical for idmapped and non-idmapped mounts going forward. This
also allows to simplify stacking filesystems such as overlayfs that
change attributes In other words, they always represent the values.
- Instead of open coding checks for whether ownership changes have
been requested and an actual update of the inode is required we now
have small static inline wrappers that abstract this logic away
removing a lot of code duplication from individual filesystems that
all open-coded the same checks"
* tag 'fs.idmapped.vfsuid.v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
mnt_idmapping: align kernel doc and parameter order
mnt_idmapping: use new helpers in mapped_fs{g,u}id()
fs: port HAS_UNMAPPED_ID() to vfs{g,u}id_t
mnt_idmapping: return false when comparing two invalid ids
attr: fix kernel doc
attr: port attribute changes to new types
security: pass down mount idmapping to setattr hook
quota: port quota helpers mount ids
fs: port to iattr ownership update helpers
fs: introduce tiny iattr ownership update helpers
fs: use mount types in iattr
fs: add two type safe mapping helpers
mnt_idmapping: add vfs{g,u}id_t
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Merge tag 'filelock-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux
Pull file locking updates from Jeff Layton:
"Just a couple of flock() patches from Kuniyuki Iwashima.
The main change is that this moves a file_lock allocation from the
slab to the stack"
* tag 'filelock-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux:
fs/lock: Rearrange ops in flock syscall.
fs/lock: Don't allocate file_lock in flock_make_lock().
- Add Yue Hu and Jeffle Xu as reviewers;
- Add the missing wake_up when updating lzma streams;
- Avoid consecutive detection for Highmem memory;
- Prepare for multi-reference pclusters and get rid of PG_error;
- Fix ctx->pos update for NFS export;
- minor cleanups.
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Merge tag 'erofs-for-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs updates from Gao Xiang:
"First of all, we'd like to add Yue Hu and Jeffle Xu as two new
reviewers. Thank them for spending time working on EROFS!
There is no major feature outstanding in this cycle, mainly a patchset
I worked on to prepare for rolling hash deduplication and folios for
compressed data as the next big features. It kills the unneeded
PG_error flag dependency as well.
Apart from that, there are bugfixes and cleanups as always. Details
are listed below:
- Add Yue Hu and Jeffle Xu as reviewers
- Add the missing wake_up when updating lzma streams
- Avoid consecutive detection for Highmem memory
- Prepare for multi-reference pclusters and get rid of PG_error
- Fix ctx->pos update for NFS export
- minor cleanups"
* tag 'erofs-for-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs: (23 commits)
erofs: update ctx->pos for every emitted dirent
erofs: get rid of the leftover PAGE_SIZE in dir.c
erofs: get rid of erofs_prepare_dio() helper
erofs: introduce multi-reference pclusters (fully-referenced)
erofs: record the longest decompressed size in this round
erofs: introduce z_erofs_do_decompressed_bvec()
erofs: try to leave (de)compressed_pages on stack if possible
erofs: introduce struct z_erofs_decompress_backend
erofs: get rid of `z_pagemap_global'
erofs: clean up `enum z_erofs_collectmode'
erofs: get rid of `enum z_erofs_page_type'
erofs: rework online page handling
erofs: switch compressed_pages[] to bufvec
erofs: introduce `z_erofs_parse_in_bvecs'
erofs: drop the old pagevec approach
erofs: introduce bufvec to store decompressed buffers
erofs: introduce `z_erofs_parse_out_bvecs()'
erofs: clean up z_erofs_collector_begin()
erofs: get rid of unneeded `inode', `map' and `sb'
erofs: avoid consecutive detection for Highmem memory
...
Pull fsnotify updates from Jan Kara:
- support for FAN_MARK_IGNORE which untangles some of the not well
defined corner cases with fanotify ignore masks
- small cleanups
* tag 'fsnotify_for_v5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fsnotify: Fix comment typo
fanotify: introduce FAN_MARK_IGNORE
fanotify: cleanups for fanotify_mark() input validations
fanotify: prepare for setting event flags in ignore mask
fs: inotify: Fix typo in inotify comment
Pull ext2 and reiserfs updates from Jan Kara:
"A fix for ext2 handling of a corrupted fs image and cleanups in ext2
and reiserfs"
* tag 'fs_for_v5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
ext2: Add more validity checks for inode counts
fs/reiserfs/inode: remove dead code in _get_block_create_0()
fs/ext2: replace ternary operator with min_t()
Changes in this set of commits:
. Delay the cleanup of interrupted posix lock requests until the
user space result arrives. Previously, the immediate cleanup
would lead to extraneous warnings when the result arrived.
. Tracepoint improvements, e.g. adding the lock resource name.
. Delay the completion of lockspace creation until one full recovery
cycle has completed. This allows more error cases to be returned to
the caller.
. Remove warnings from the locking layer about delayed network replies.
The recently added midcomms warnings are much more useful.
. Begin the process of deprecating two unused lock-timeout-related
features. These features now require enabling via a Kconfig option,
and enabling them triggers deprecation warnings. We expect to
remove the code in v6.2.
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Merge tag 'dlm-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm
Pull dlm updates from David Teigland:
- Delay the cleanup of interrupted posix lock requests until the user
space result arrives. Previously, the immediate cleanup would lead to
extraneous warnings when the result arrived.
- Tracepoint improvements, e.g. adding the lock resource name.
- Delay the completion of lockspace creation until one full recovery
cycle has completed. This allows more error cases to be returned to
the caller.
- Remove warnings from the locking layer about delayed network replies.
The recently added midcomms warnings are much more useful.
- Begin the process of deprecating two unused lock-timeout-related
features. These features now require enabling via a Kconfig option,
and enabling them triggers deprecation warnings. We expect to remove
the code in v6.2.
* tag 'dlm-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
fs: dlm: move kref_put assert for lkb structs
fs: dlm: don't use deprecated timeout features by default
fs: dlm: add deprecation Kconfig and warnings for timeouts
fs: dlm: remove timeout from dlm_user_adopt_orphan
fs: dlm: remove waiter warnings
fs: dlm: fix grammar in lowcomms output
fs: dlm: add comment about lkb IFL flags
fs: dlm: handle recovery result outside of ls_recover
fs: dlm: make new_lockspace() wait until recovery completes
fs: dlm: call dlm_lsop_recover_prep once
fs: dlm: update comments about recovery and membership handling
fs: dlm: add resource name to tracepoints
fs: dlm: remove additional dereference of lksb
fs: dlm: change ast and bast trace order
fs: dlm: change posix lock sigint handling
fs: dlm: use dlm_plock_info for do_unlock_close
fs: dlm: change plock interrupted message to debug again
fs: dlm: add pid to debug log
fs: dlm: plock use list_first_entry
The unhold_lkb() function decrements the lock's kref, and
asserts that the ref count was not the final one. Use the
kref_put release function (which should not be called) to
call the assert, rather than doing the assert based on the
kref_put return value. Using kill_lkb() as the release
function doesn't make sense if we only want to assert.
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
This patch will disable use of deprecated timeout features if
CONFIG_DLM_DEPRECATED_API is not set. The deprecated features
will be removed in upcoming kernel release v6.2.
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
This patch adds a CONFIG_DLM_DEPRECATED_API Kconfig option
that must be enabled to use two timeout-related features
that we intend to remove in kernel v6.2. Warnings are
printed if either is enabled and used. Neither has ever
been used as far as we know.
. The DLM_LSFL_TIMEWARN lockspace creation flag will be
removed, along with the associated configfs entry for
setting the timeout. Setting the flag and configfs file
would cause dlm to track how long locks were waiting
for reply messages. After a timeout, a kernel message
would be logged, and a netlink message would be sent
to userspace. Recently, midcomms messages have been
added that produce much better logging about actual
problems with messages. No use has ever been found
for the netlink messages.
. The userspace libdlm API has allowed the DLM_LKF_TIMEOUT
flag with a timeout value to be set in lock requests.
The lock request would be cancelled after the timeout.
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
rseq_abi()->flags and rseq_abi()->rseq_cs->flags 29 upper bits are
currently unused.
The current behavior when those bits are set is to ignore them. This is
not an ideal behavior, because when future features will start using
those flags, if user-space fails to correctly validate that the kernel
indeed supports those flags (e.g. with a new sys_rseq flags bit) before
using them, it may incorrectly assume that the kernel will handle those
flags way when in fact those will be silently ignored on older kernels.
Validating that unused flags bits are cleared will allow a smoother
transition when those flags will start to be used by allowing
applications to fail early, and obviously, when they attempt to use the
new flags on an older kernel that does not support them.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20220622194617.1155957-2-mathieu.desnoyers@efficios.com
Dimitris Michailidis says:
====================
net/funeth: Tx support for XDP with frags
Support XDP with fragments for XDP_TX and ndo_xdp_xmit.
The first three patches rework existing code used by the skb path to
make it suitable also for XDP. With these all the callees of the main
Tx XDP function, fun_xdp_tx(), are fragment-capable. The last patch
updates fun_xdp_tx() to handle fragments.
====================
Tested-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
By now all the functions fun_xdp_tx() calls are shared with the skb path
and thus are fragment-capable. Update fun_xdp_tx(), that up to now has
been passing just one buffer, to check for fragments and call
accordingly. This makes XDP_TX and ndo_xdp_xmit fragment-capable.
Signed-off-by: Dimitris Michailidis <dmichail@fungible.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Instead of passing an skb to the mapping function pass an
skb_shared_info plus an additional address/length pair. This makes it
usable for both skbs and XDP. Call it from the XDP path and adjust the
skb path.
Signed-off-by: Dimitris Michailidis <dmichail@fungible.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Extract the Tx gather list writing code that skbs use into a utility
function and use it also for XDP.
Signed-off-by: Dimitris Michailidis <dmichail@fungible.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Current XDP unmapping is a subset of its skb analog, dealing with
only one buffer. In preparation for multi-frag XDP rename the skb
function and use it also for XDP. The XDP version is removed.
Signed-off-by: Dimitris Michailidis <dmichail@fungible.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko says:
====================
net: devlink: allow parallel commands on multiple devlinks
Aim of this patchset is to remove devlink_mutex and eventually to enable
parallel ops on devlink netlink interface.
====================
Tested-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
As the devlink_mutex was removed and all devlink instances are protected
individually by devlink->lock mutex, allow the netlink ops to run
in parallel and therefore allow user to execute commands on multiple
devlink instances simultaneously.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
All accesses to devlink structure from userspace and drivers are locked
with devlink->lock instance mutex. Also, devlinks xa_array iteration is
taken care of by iteration helpers taking devlink reference.
Therefore, remove devlink_mutex as it is no longer needed.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Convert reload command to behave the same way as the rest of the
commands and let if be called with devlink->lock held. Remove the
temporary devl_lock taking from drivers. As the DEVLINK_NL_FLAG_NO_LOCK
flag is no longer used, remove it alongside.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add new mark called "unregistering" to be set at the beginning of
devlink_unregister() function. Check this mark during devlinks
iteration in order to prevent getting a reference of devlink which is
being currently unregistered.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
__udp_sysctl_init() is called for init_net via udp_sysctl_ops.
While at it, we can rename __udp_sysctl_init() to udp_sysctl_init().
Fixes: 1e80295158 ("udp: Move the udp sysctl to namespace.")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2022-07-29
This series contains updates to iavf driver only.
Przemyslaw prevents setting of TC max rate below minimum supported values
and reports updated queue values when setting up TCs.
---
v2: Dropped patch 3 (hw-tc-offload check)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
If 'local_odp_mr->r_trans_private' is a error code,
it is better to print the error code than to print
the value of IS_ERR().
Signed-off-by: Li Qiong <liqiong@nfschina.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge tag 'linux-can-next-for-5.20-20220731' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next
Marc Kleine-Budde says:
====================
pull-request: can-next 2022-07-31
this is a pull request of 36 patches for net-next/master.
The 1st patch is by me and fixes a typo in the mcp251xfd driver.
Vincent Mailhol contributes a series of 9 patches, which clean up the
drivers to make use of KBUILD_MODNAME instead of hard coded names and
remove DRV_VERSION.
Followed by 3 patches by Vincent Mailhol that directly set the
ethtool_ops in instead of calling a function in the slcan, c_can and
flexcan driver.
Vincent Mailhol contributes a KBUILD_MODNAME and pr_fmt cleanup patch
for the slcan driver. Dario Binacchi contributes 6 patches to clean up
the driver and remove the legacy driver infrastructure.
The next 14 patches are by Vincent Mailhol and target the various
drivers, they add ethtool support and reporting of timestamping
capabilities.
Another patch by Vincent Mailhol for the etas_es58x driver to remove
useless calls to usb_fill_bulk_urb().
The last patch is by Christophe JAILLET and fixes a broken link to
Documentation in the can327 driver.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Since commit 482a4360c5 ("docs: networking: convert netdevices.txt to
ReST"), Documentation/networking/netdevices.txt has been replaced by
Documentation/networking/netdevices.rst.
Update the comment accordingly to avoid a 'make htmldocs' warning.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/all/6a54aff884ea4f84b661527d75aabd6632140715.1659249135.git.christophe.jaillet@wanadoo.fr
Fixes: 43da2f0762 ("can: can327: CAN/ldisc driver for ELM327 based OBD-II adapters")
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
- Check the IBPB feature flag before enabling IBPB in firmware calls
because cloud vendors' fantasy when it comes to creating guest
configurations is unlimited
- Unexport sev_es_ghcb_hv_call() before 5.19 releases now that HyperV
doesn't need it anymore
- Remove dead CONFIG_* items
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Merge tag 'x86_urgent_for_v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Update the 'mitigations=' kernel param documentation
- Check the IBPB feature flag before enabling IBPB in firmware calls
because cloud vendors' fantasy when it comes to creating guest
configurations is unlimited
- Unexport sev_es_ghcb_hv_call() before 5.19 releases now that HyperV
doesn't need it anymore
- Remove dead CONFIG_* items
* tag 'x86_urgent_for_v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
docs/kernel-parameters: Update descriptions for "mitigations=" param with retbleed
x86/bugs: Do not enable IBPB at firmware entry when IBPB is not available
Revert "x86/sev: Expose sev_es_ghcb_hv_call() for use by HyperV"
x86/configs: Update configs in x86_debug.config
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Merge tag 'locking_urgent_for_v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fix from Borislav Petkov:
- Avoid rwsem lockups in certain situations when handling the handoff
bit
* tag 'locking_urgent_for_v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/rwsem: Allow slowpath writer to ignore handoff bit if not set by first waiter
order to accomodate an HPE BIOS which sets only the device but not the
bank
- Two forgotten fixes to synopsys_edac when handling error interrupts
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Merge tag 'edac_urgent_for_v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC fixes from Borislav Petkov:
- Relax the condition under which the DIMM label in ghes_edac is set in
order to accomodate an HPE BIOS which sets only the device but not
the bank
- Two forgotten fixes to synopsys_edac when handling error interrupts
* tag 'edac_urgent_for_v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/ghes: Set the DIMM label unconditionally
EDAC/synopsys: Re-enable the error interrupts on v3 hw
EDAC/synopsys: Use the correct register to disable the error interrupt on v3 hw
erofs_readdir update ctx->pos after filling a batch of dentries
and it may cause dir/files duplication for NFS readdirplus which
depends on ctx->pos to fill dir correctly. So update ctx->pos for
every emitted dirent in erofs_fill_dentries to fix it.
Also fix the update of ctx->pos when the initial file position has
exceeded nameoff.
Fixes: 3e917cc305 ("erofs: make filesystem exportable")
Signed-off-by: Hongnan Li <hongnan.li@linux.alibaba.com>
Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Link: https://lore.kernel.org/r/20220722082732.30935-1-jefflexu@linux.alibaba.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Last set of ARM fixes for 5.19:
- fix for MAX_DMA_ADDRESS overflow
- fix for find_*_bit performing an out of bounds memory access
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Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
"Last set of ARM fixes for 5.19:
- fix for MAX_DMA_ADDRESS overflow
- fix for find_*_bit performing an out of bounds memory access"
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: findbit: fix overflowing offset
ARM: 9216/1: Fix MAX_DMA_ADDRESS overflow
With commit d257cc8cb8 ("locking/rwsem: Make handoff bit handling more
consistent"), the writer that sets the handoff bit can be interrupted
out without clearing the bit if the wait queue isn't empty. This disables
reader and writer optimistic lock spinning and stealing.
Now if a non-first writer in the queue is somehow woken up or a new
waiter enters the slowpath, it can't acquire the lock. This is not the
case before commit d257cc8cb8 as the writer that set the handoff bit
will clear it when exiting out via the out_nolock path. This is less
efficient as the busy rwsem stays in an unlock state for a longer time.
In some cases, this new behavior may cause lockups as shown in [1] and
[2].
This patch allows a non-first writer to ignore the handoff bit if it
is not originally set or initiated by the first waiter. This patch is
shown to be effective in fixing the lockup problem reported in [1].
[1] https://lore.kernel.org/lkml/20220617134325.GC30825@techsingularity.net/
[2] https://lore.kernel.org/lkml/3f02975c-1a9d-be20-32cf-f1d8e3dfafcc@oracle.com/
Fixes: d257cc8cb8 ("locking/rwsem: Make handoff bit handling more consistent")
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: John Donnelly <john.p.donnelly@oracle.com>
Tested-by: Mel Gorman <mgorman@techsingularity.net>
Link: https://lore.kernel.org/r/20220622200419.778799-1-longman@redhat.com
Misc updates to mlx5 driver:
1) Gal corrects to use skb_tcp_all_headers on encapsulated skbs.
2) Roi Adds the support for offloading standalone police actions.
3) lama, did some refactoring to minimize code coupling with
mlx5e_priv "god object" in some of the follows, and converts some of the
objects to pointers to preserve on memory when these objects aren't needed.
This is part one of two parts series.
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Merge tag 'mlx5-updates-2022-07-28' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
mlx5-updates-2022-07-28
Misc updates to mlx5 driver:
1) Gal corrects to use skb_tcp_all_headers on encapsulated skbs.
2) Roi Adds the support for offloading standalone police actions.
3) lama, did some refactoring to minimize code coupling with
mlx5e_priv "god object" in some of the follows, and converts some of the
objects to pointers to preserve on memory when these objects aren't needed.
This is part one of two parts series.
* tag 'mlx5-updates-2022-07-28' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux:
net/mlx5e: Move mlx5e_init_l2_addr to en_main
net/mlx5e: Split en_fs ndo's and move to en_main
net/mlx5e: Separate mlx5e_set_rx_mode_work and move caller to en_main
net/mlx5e: Add mdev to flow_steering struct
net/mlx5e: Report flow steering errors with mdev err report API
net/mlx5e: Convert mlx5e_flow_steering member of mlx5e_priv to pointer
net/mlx5e: Allocate VLAN and TC for featured profiles only
net/mlx5e: Make mlx5e_tc_table private
net/mlx5e: Convert mlx5e_tc_table member of mlx5e_flow_steering to pointer
net/mlx5e: TC, Support tc action api for police
net/mlx5e: TC, Separate get/update/replace meter functions
net/mlx5e: Add red and green counters for metering
net/mlx5e: TC, Allocate post meter ft per rule
net/mlx5: DR, Add support for flow metering ASO
net/mlx5e: Fix wrong use of skb_tcp_all_headers() with encapsulation
====================
Link: https://lore.kernel.org/r/20220728205728.143074-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
