Specifically, it's because __enc_copy() encrypts the kernel after
being relocated outside the kernel in sme_encrypt_execute(), and the
RET macro's jmp offset isn't amended prior to execution.
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
This is userspace code and doesn't play by the normal kernel rules.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Prepare the SETcc fastop stuff for when RET can be larger still.
The tricky bit here is that the expressions should not only be
constant C expressions, but also absolute GAS expressions. This means
no ?: and 'true' is ~0.
Also ensure em_setcc() has the same alignment as the actual FOP_SETCC()
ops, this ensures there cannot be an alignment hole between em_setcc()
and the first op.
Additionally, add a .skip directive to the FOP_SETCC() macro to fill
any remaining space with INT3 traps; however the primary purpose of
this directive is to generate AS warnings when the remaining space
goes negative. Which is a very good indication the alignment magic
went side-ways.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
In addition to teaching static_call about the new way to spell 'RET',
there is an added complication in that static_call() is allowed to
rewrite text before it is known which particular spelling is required.
In order to deal with this; have a static_call specific fixup in the
apply_return() 'alternative' patching routine that will rewrite the
static_call trampoline to match the definite sequence.
This in turn creates the problem of uniquely identifying static call
trampolines. Currently trampolines are 8 bytes, the first 5 being the
jmp.d32/ret sequence and the final 3 a byte sequence that spells out
'SCT'.
This sequence is used in __static_call_validate() to ensure it is
patching a trampoline and not a random other jmp.d32. That is,
false-positives shouldn't be plenty, but aren't a big concern.
OTOH the new __static_call_fixup() must not have false-positives, and
'SCT' decodes to the somewhat weird but semi plausible sequence:
push %rbx
rex.XB push %r12
Additionally, there are SLS concerns with immediate jumps. Combined it
seems like a good moment to change the signature to a single 3 byte
trap instruction that is unique to this usage and will not ever get
generated by accident.
As such, change the signature to: '0x0f, 0xb9, 0xcc', which decodes
to:
ud1 %esp, %ecx
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Find all the return-thunk sites and record them in a .return_sites
section such that the kernel can undo this.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Utilize -mfunction-return=thunk-extern when available to have the
compiler replace RET instructions with direct JMPs to the symbol
__x86_return_thunk. This does not affect assembler (.S) sources, only C
sources.
-mfunction-return=thunk-extern has been available since gcc 7.3 and
clang 15.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Put the actual retpoline thunk as the original code so that it can
become more complicated. Specifically, it allows RET to be a JMP,
which can't be .altinstr_replacement since that doesn't do relocations
(except for the very first instruction).
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
On it's own not much of a cleanup but it prepares for more/similar
code.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
In order to extend the RETPOLINE features to 4, move them to word 11
where there is still room. This mostly keeps DISABLE_RETPOLINE
simple.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
A number of fixes have accumulated, but they are largely for
harmless issues:
- Several OF node leak fixes
- A fix to the Exynos7885 UART clock description
- DTS fixes to prevent boot failures on TI AM64 and J721s2
- Bus probe error handling fixes for Baikal-T1
- A fixup to the way STM32 SoCs use separate dts files for
different firmware stacks
- Multiple code fixes for Arm SCMI firmware, all dealing with
robustness of the implementation
- Multiple NXP i.MX devicetree fixes, addressing incorrect
data in DT nodes
- Three updates to the MAINTAINERS file, including Florian
Fainelli taking over BCM283x/BCM2711 (Raspberry Pi)
from Nicolas Saenz Julienne
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Merge tag 'soc-fixes-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"A number of fixes have accumulated, but they are largely for harmless
issues:
- Several OF node leak fixes
- A fix to the Exynos7885 UART clock description
- DTS fixes to prevent boot failures on TI AM64 and J721s2
- Bus probe error handling fixes for Baikal-T1
- A fixup to the way STM32 SoCs use separate dts files for different
firmware stacks
- Multiple code fixes for Arm SCMI firmware, all dealing with
robustness of the implementation
- Multiple NXP i.MX devicetree fixes, addressing incorrect data in DT
nodes
- Three updates to the MAINTAINERS file, including Florian Fainelli
taking over BCM283x/BCM2711 (Raspberry Pi) from Nicolas Saenz
Julienne"
* tag 'soc-fixes-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (29 commits)
ARM: dts: aspeed: nuvia: rename vendor nuvia to qcom
arm: mach-spear: Add missing of_node_put() in time.c
ARM: cns3xxx: Fix refcount leak in cns3xxx_init
MAINTAINERS: Update email address
arm64: dts: ti: k3-am64-main: Remove support for HS400 speed mode
arm64: dts: ti: k3-j721s2: Fix overlapping GICD memory region
ARM: dts: bcm2711-rpi-400: Fix GPIO line names
bus: bt1-axi: Don't print error on -EPROBE_DEFER
bus: bt1-apb: Don't print error on -EPROBE_DEFER
ARM: Fix refcount leak in axxia_boot_secondary
ARM: dts: stm32: move SCMI related nodes in a dedicated file for stm32mp15
soc: imx: imx8m-blk-ctrl: fix display clock for LCDIF2 power domain
ARM: dts: imx6qdl-colibri: Fix capacitive touch reset polarity
ARM: dts: imx6qdl: correct PU regulator ramp delay
firmware: arm_scmi: Fix incorrect error propagation in scmi_voltage_descriptors_get
firmware: arm_scmi: Avoid using extended string-buffers sizes if not necessary
firmware: arm_scmi: Fix SENSOR_AXIS_NAME_GET behaviour when unsupported
ARM: dts: imx7: Move hsic_phy power domain to HSIC PHY node
soc: bcm: brcmstb: pm: pm-arm: Fix refcount leak in brcmstb_pm_probe
MAINTAINERS: Update BCM2711/BCM2835 maintainer
...
Fixes for post-5.18 changes:
- fix for a damon boot hang, from SeongJae
- fix for a kfence warning splat, from Jason Donenfeld
- fix for zero-pfn pinning, from Alex Williamson
- fix for fallocate hole punch clearing, from Mike Kravetz
Fixes pre-5.18 material:
- fix for a performance regression, from Marcelo
- fix for a hwpoisining BUG from zhenwei pi
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Merge tag 'mm-hotfixes-stable-2022-06-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull hotfixes from Andrew Morton:
"Minor things, mainly - mailmap updates, MAINTAINERS updates, etc.
Fixes for this merge window:
- fix for a damon boot hang, from SeongJae
- fix for a kfence warning splat, from Jason Donenfeld
- fix for zero-pfn pinning, from Alex Williamson
- fix for fallocate hole punch clearing, from Mike Kravetz
Fixes for previous releases:
- fix for a performance regression, from Marcelo
- fix for a hwpoisining BUG from zhenwei pi"
* tag 'mm-hotfixes-stable-2022-06-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mailmap: add entry for Christian Marangi
mm/memory-failure: disable unpoison once hw error happens
hugetlbfs: zero partial pages during fallocate hole punch
mm: memcontrol: reference to tools/cgroup/memcg_slabinfo.py
mm: re-allow pinning of zero pfns
mm/kfence: select random number before taking raw lock
MAINTAINERS: add maillist information for LoongArch
MAINTAINERS: update MM tree references
MAINTAINERS: update Abel Vesa's email
MAINTAINERS: add MEMORY HOT(UN)PLUG section and add David as reviewer
MAINTAINERS: add Miaohe Lin as a memory-failure reviewer
mailmap: add alias for jarkko@profian.com
mm/damon/reclaim: schedule 'damon_reclaim_timer' only after 'system_wq' is initialized
kthread: make it clear that kthread_create_on_node() might be terminated by any fatal signal
mm: lru_cache_disable: use synchronize_rcu_expedited
mm/page_isolation.c: fix one kernel-doc comment
- Enable ignore_missing_thread in 'perf stat', enabling counting with '--pid'
when threads disappear during counting session setup.
- Adjust output data offset for backward compatibility in 'perf inject'.
- Fix missing free in copy_kcore_dir() in 'perf inject'.
- Fix caching files with a wrong build ID.
- Sync drm, cpufeatures, vhost and svn headers with the kernel.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-fixes-for-v5.19-2022-06-26' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
Pull perf tools fixes from Arnaldo Carvalho de Melo:
- Enable ignore_missing_thread in 'perf stat', enabling counting with
'--pid' when threads disappear during counting session setup
- Adjust output data offset for backward compatibility in 'perf inject'
- Fix missing free in copy_kcore_dir() in 'perf inject'
- Fix caching files with a wrong build ID
- Sync drm, cpufeatures, vhost and svn headers with the kernel
* tag 'perf-tools-fixes-for-v5.19-2022-06-26' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
tools headers UAPI: Synch KVM's svm.h header with the kernel
tools include UAPI: Sync linux/vhost.h with the kernel sources
perf stat: Enable ignore_missing_thread
perf inject: Adjust output data offset for backward compatibility
perf trace beauty: Fix generation of errno id->str table on ALT Linux
perf build-id: Fix caching files with a wrong build ID
tools headers cpufeatures: Sync with the kernel sources
tools headers UAPI: Sync drm/i915_drm.h with the kernel sources
perf inject: Fix missing free in copy_kcore_dir()
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Merge tag 'for-5.19-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- zoned relocation fixes:
- fix critical section end for extent writeback, this could lead
to out of order write
- prevent writing to previous data relocation block group if space
gets low
- reflink fixes:
- fix race between reflinking and ordered extent completion
- proper error handling when block reserve migration fails
- add missing inode iversion/mtime/ctime updates on each iteration
when replacing extents
- fix deadlock when running fsync/fiemap/commit at the same time
- fix false-positive KCSAN report regarding pid tracking for read locks
and data race
- minor documentation update and link to new site
* tag 'for-5.19-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
Documentation: update btrfs list of features and link to readthedocs.io
btrfs: fix deadlock with fsync+fiemap+transaction commit
btrfs: don't set lock_owner when locking extent buffer for reading
btrfs: zoned: fix critical section of relocation inode writeback
btrfs: zoned: prevent allocation from previous data relocation BG
btrfs: do not BUG_ON() on failure to migrate space when replacing extents
btrfs: add missing inode updates on each iteration when replacing extents
btrfs: fix race between reflinking and ordered extent completion
- pass the correct size to dma_set_encrypted() when freeing memory
(Dexuan Cui)
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Merge tag 'dma-mapping-5.19-2022-06-26' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fix from Christoph Hellwig:
- pass the correct size to dma_set_encrypted() when freeing memory
(Dexuan Cui)
* tag 'dma-mapping-5.19-2022-06-26' of git://git.infradead.org/users/hch/dma-mapping:
dma-direct: use the correct size for dma_set_encrypted()
Two bug fixes for the pxa3xx and intelfb drivers:
- pxa3xx-gcu: Fix integer overflow in pxa3xx_gcu_write
- intelfb: Initialize value of stolen size
The other changes are small cleanups, simplifications and documentation
updates to the cirrusfb, skeletonfb, omapfb, intelfb, au1100fb and
simplefb drivers.
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Merge tag 'for-5.19/fbdev-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull fbdev fixes from Helge Deller:
"Two bug fixes for the pxa3xx and intelfb drivers:
- pxa3xx-gcu: Fix integer overflow in pxa3xx_gcu_write
- intelfb: Initialize value of stolen size
The other changes are small cleanups, simplifications and
documentation updates to the cirrusfb, skeletonfb, omapfb,
intelfb, au1100fb and simplefb drivers"
* tag 'for-5.19/fbdev-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
video: fbdev: omap: Remove duplicate 'the' in comment
video: fbdev: omapfb: Align '*' in comment
video: fbdev: simplefb: Check before clk_put() not needed
video: fbdev: au1100fb: Drop unnecessary NULL ptr check
video: fbdev: pxa3xx-gcu: Fix integer overflow in pxa3xx_gcu_write
video: fbdev: skeletonfb: Convert to generic power management
video: fbdev: cirrusfb: Remove useless reference to PCI power management
video: fbdev: intelfb: Initialize value of stolen size
video: fbdev: intelfb: Use aperture size from pci_resource_len
video: fbdev: skeletonfb: Fix syntax errors in comments
Three important fixes:
- enable ARCH_HAS_STRICT_MODULE_RWX to prevent a boot crash on c8000 machines
- flush all mappings of a shared anonymous page on PA8800/8900 machines via
flushing the whole data cache. This may slow down such machines but
makes sure that the cache is consistent
- Fix duplicate definition build error regarding fb_is_primary_device()
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Merge tag 'for-5.19/parisc-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc architecture fixes from Helge Deller:
- enable ARCH_HAS_STRICT_MODULE_RWX to prevent a boot crash on c8000
machines
- flush all mappings of a shared anonymous page on PA8800/8900 machines
via flushing the whole data cache. This may slow down such machines
but makes sure that the cache is consistent
- Fix duplicate definition build error regarding fb_is_primary_device()
* tag 'for-5.19/parisc-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Enable ARCH_HAS_STRICT_MODULE_RWX
parisc: Fix flush_anon_page on PA8800/PA8900
parisc: align '*' in comment in math-emu code
parisc/stifb: Fix fb_is_primary_device() only available with CONFIG_FB_STI
- fix OF reference leaks in xtensa arch code
- replace '.bss' with '.section .bss' to fix entry.S build with old
assembler
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Merge tag 'xtensa-20220626' of https://github.com/jcmvbkbc/linux-xtensa
Pull xtensa fixes from Max Filippov:
- fix OF reference leaks in xtensa arch code
- replace '.bss' with '.section .bss' to fix entry.S build with old
assembler
* tag 'xtensa-20220626' of https://github.com/jcmvbkbc/linux-xtensa:
xtensa: change '.bss' to '.section .bss'
xtensa: xtfpga: Fix refcount leak bug in setup
xtensa: Fix refcount leak bug in time.c
- A fix for a CMA change that broke booting guests with > 2G RAM on Power8 hosts.
- Fix the RTAS call filter to allow a special case that applications rely on.
- A change to our execve path, to make the execve syscall exit tracepoint work.
- Three fixes to wire up our various RNGs earlier in boot so they're available for use in
the initial seeding in random_init().
- A build fix for when KASAN is enabled along with STRUCTLEAK_BYREF_ALL.
Thanks to: Andrew Donnellan, Aneesh Kumar K.V, Christophe Leroy, Jason A. Donenfeld,
Nathan Lynch, Naveen N. Rao, Sathvika Vasireddy, Sumit Dubey2, Tyrel Datwyler, Zi Yan.
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Merge tag 'powerpc-5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- A fix for a CMA change that broke booting guests with > 2G RAM on
Power8 hosts.
- Fix the RTAS call filter to allow a special case that applications
rely on.
- A change to our execve path, to make the execve syscall exit
tracepoint work.
- Three fixes to wire up our various RNGs earlier in boot so they're
available for use in the initial seeding in random_init().
- A build fix for when KASAN is enabled along with
STRUCTLEAK_BYREF_ALL.
Thanks to Andrew Donnellan, Aneesh Kumar K.V, Christophe Leroy, Jason
Donenfeld, Nathan Lynch, Naveen N. Rao, Sathvika Vasireddy, Sumit
Dubey2, Tyrel Datwyler, and Zi Yan.
* tag 'powerpc-5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/powernv: wire up rng during setup_arch
powerpc/prom_init: Fix build failure with GCC_PLUGIN_STRUCTLEAK_BYREF_ALL and KASAN
powerpc/rtas: Allow ibm,platform-dump RTAS call with null buffer address
powerpc: Enable execve syscall exit tracepoint
powerpc/pseries: wire up rng during setup_arch()
powerpc/microwatt: wire up rng during setup_arch()
powerpc/mm: Move CMA reservations after initmem_init()
- Fix modpost to detect EXPORT_SYMBOL marked as __init or__exit
- Update the supported arch list in the LLVM document
- Avoid the second link of vmlinux for CONFIG_TRIM_UNUSED_KSYMS
- Avoid false __KSYM___this_module define in include/generated/autoksyms.h
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Merge tag 'kbuild-fixes-v5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- Fix modpost to detect EXPORT_SYMBOL marked as __init or__exit
- Update the supported arch list in the LLVM document
- Avoid the second link of vmlinux for CONFIG_TRIM_UNUSED_KSYMS
- Avoid false __KSYM___this_module define in include/generated/autoksyms.h
* tag 'kbuild-fixes-v5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: Ignore __this_module in gen_autoksyms.sh
kbuild: link vmlinux only once for CONFIG_TRIM_UNUSED_KSYMS (2nd attempt)
Documentation/llvm: Update Supported Arch table
modpost: fix section mismatch check for exported init/exit sections
- Use updated exfat_chain directly instead of snapshot values in rename.
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Merge tag 'exfat-for-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat
Pull exfat fix from Namjae Jeon:
- Use updated exfat_chain directly instead of snapshot values in
rename.
* tag 'exfat-for-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat:
exfat: use updated exfat_chain directly during renaming
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Merge tag '5.19-rc3-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs client fixes from Steve French:
"Fixes addressing important multichannel, and reconnect issues.
Multichannel mounts when the server network interfaces changed, or ip
addresses changed, uncovered problems, especially in reconnect, but
the patches for this were held up until recently due to some lock
conflicts that are now addressed.
Included in this set of fixes:
- three fixes relating to multichannel reconnect, dynamically
adjusting the list of server interfaces to avoid problems during
reconnect
- a lock conflict fix related to the above
- two important fixes for negotiate on secondary channels (null
netname can unintentionally cause multichannel to be disabled to
some servers)
- a reconnect fix (reporting incorrect IP address in some cases)"
* tag '5.19-rc3-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: update cifs_ses::ip_addr after failover
cifs: avoid deadlocks while updating iface
cifs: periodically query network interfaces from server
cifs: during reconnect, update interface if necessary
cifs: change iface_list from array to sorted linked list
smb3: use netname when available on secondary channels
smb3: fix empty netname context on secondary channels
To pick up the changes from:
d5af44dde5 ("x86/sev: Provide support for SNP guest request NAEs")
0afb6b660a ("x86/sev: Use SEV-SNP AP creation to start secondary CPUs")
dc3f3d2474 ("x86/mm: Validate memory when changing the C-bit")
cbd3d4f7c4 ("x86/sev: Check SEV-SNP features support")
That gets these new SVM exit reasons:
+ { SVM_VMGEXIT_PSC, "vmgexit_page_state_change" }, \
+ { SVM_VMGEXIT_GUEST_REQUEST, "vmgexit_guest_request" }, \
+ { SVM_VMGEXIT_EXT_GUEST_REQUEST, "vmgexit_ext_guest_request" }, \
+ { SVM_VMGEXIT_AP_CREATION, "vmgexit_ap_creation" }, \
+ { SVM_VMGEXIT_HV_FEATURES, "vmgexit_hypervisor_feature" }, \
Addressing this perf build warning:
Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/svm.h' differs from latest version at 'arch/x86/include/uapi/asm/svm.h'
diff -u tools/arch/x86/include/uapi/asm/svm.h arch/x86/include/uapi/asm/svm.h
This causes these changes:
CC /tmp/build/perf-urgent/arch/x86/util/kvm-stat.o
LD /tmp/build/perf-urgent/arch/x86/util/perf-in.o
LD /tmp/build/perf-urgent/arch/x86/perf-in.o
LD /tmp/build/perf-urgent/arch/perf-in.o
LD /tmp/build/perf-urgent/perf-in.o
LINK /tmp/build/perf-urgent/perf
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
To get the changes in:
84d7c8fd3a ("vhost-vdpa: introduce uAPI to set group ASID")
2d1fcb7758 ("vhost-vdpa: uAPI to get virtqueue group id")
a0c95f2011 ("vhost-vdpa: introduce uAPI to get the number of address spaces")
3ace88bd37 ("vhost-vdpa: introduce uAPI to get the number of virtqueue groups")
175d493c3c ("vhost: move the backend feature bits to vhost_types.h")
Silencing this perf build warning:
Warning: Kernel ABI header at 'tools/include/uapi/linux/vhost.h' differs from latest version at 'include/uapi/linux/vhost.h'
diff -u tools/include/uapi/linux/vhost.h include/uapi/linux/vhost.h
To pick up these changes and support them:
$ tools/perf/trace/beauty/vhost_virtio_ioctl.sh > before
$ cp include/uapi/linux/vhost.h tools/include/uapi/linux/vhost.h
$ tools/perf/trace/beauty/vhost_virtio_ioctl.sh > after
$ diff -u before after
--- before 2022-06-26 12:04:35.982003781 -0300
+++ after 2022-06-26 12:04:43.819972476 -0300
@@ -28,6 +28,7 @@
[0x74] = "VDPA_SET_CONFIG",
[0x75] = "VDPA_SET_VRING_ENABLE",
[0x77] = "VDPA_SET_CONFIG_CALL",
+ [0x7C] = "VDPA_SET_GROUP_ASID",
};
static const char *vhost_virtio_ioctl_read_cmds[] = {
[0x00] = "GET_FEATURES",
@@ -39,5 +40,8 @@
[0x76] = "VDPA_GET_VRING_NUM",
[0x78] = "VDPA_GET_IOVA_RANGE",
[0x79] = "VDPA_GET_CONFIG_SIZE",
+ [0x7A] = "VDPA_GET_AS_NUM",
+ [0x7B] = "VDPA_GET_VRING_GROUP",
[0x80] = "VDPA_GET_VQS_COUNT",
+ [0x81] = "VDPA_GET_GROUP_NUM",
};
$
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Gautam Dawar <gautam.dawar@xilinx.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/lkml/Yrh3xMYbfeAD0MFL@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
perf already support ignore_missing_thread for -p, but not yet
applied to `perf stat -p <pid>`. This patch enables ignore_missing_thread
for `perf stat -p <pid>`.
Committer notes:
And here is a refresher about the 'ignore_missing_thread' knob, from a
previous patch using it:
ca8000684e ("perf evsel: Enable ignore_missing_thread for pid option")
---
While monitoring a multithread process with pid option, perf sometimes
may return sys_perf_event_open failure with 3(No such process) if any of
the process's threads die before we open the event. However, we want
perf continue monitoring the remaining threads and do not exit with
error.
---
Signed-off-by: Gang Li <ligang.bdlg@bytedance.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220622030037.15005-1-ligang.bdlg@bytedance.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
When 'perf inject' creates a new file, it reuses the data offset from
the input file. If there has been a change on the size of the header, as
happened in v5.12 -> v5.13, the new offsets will be wrong, resulting in
a corrupted output file.
This change adds the function perf_session__data_offset to compute the
data offset based on the current header size, and uses that instead of
the offset from the original input file.
Signed-off-by: Raul Silvera <rsilvera@google.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Colin Ian King <colin.king@intel.com>
Cc: Dave Marchevsky <davemarchevsky@fb.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220621152725.2668041-1-rsilvera@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
For some reason using:
cat <<EoFuncBegin
static const char *errno_to_name__$arch(int err)
{
switch (err) {
EoFuncBegin
In tools/perf/trace/beauty/arch_errno_names.sh isn't working on ALT
Linux sisyphus (development version), which could be some distro
specific glitch, so just get this done in an alternative way that works
everywhere while giving notice to the people working on that distro to
try and figure our what really took place.
Cc: Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Build ID events associate a file name with a build ID. However, when
using perf inject, there is no guarantee that the file on the current
machine at the current time has that build ID. Fix by comparing the
build IDs and skip adding to the cache if they are different.
Example:
$ echo "int main() {return 0;}" > prog.c
$ gcc -o prog prog.c
$ perf record --buildid-all ./prog
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.019 MB perf.data ]
$ file-buildid() { file $1 | awk -F= '{print $2}' | awk -F, '{print $1}' ; }
$ file-buildid prog
444ad9be165d8058a48ce2ffb4e9f55854a3293e
$ file-buildid ~/.debug/$(pwd)/prog/444ad9be165d8058a48ce2ffb4e9f55854a3293e/elf
444ad9be165d8058a48ce2ffb4e9f55854a3293e
$ echo "int main() {return 1;}" > prog.c
$ gcc -o prog prog.c
$ file-buildid prog
885524d5aaa24008a3e2b06caa3ea95d013c0fc5
Before:
$ perf buildid-cache --purge $(pwd)/prog
$ perf inject -i perf.data -o junk
$ file-buildid ~/.debug/$(pwd)/prog/444ad9be165d8058a48ce2ffb4e9f55854a3293e/elf
885524d5aaa24008a3e2b06caa3ea95d013c0fc5
$
After:
$ perf buildid-cache --purge $(pwd)/prog
$ perf inject -i perf.data -o junk
$ file-buildid ~/.debug/$(pwd)/prog/444ad9be165d8058a48ce2ffb4e9f55854a3293e/elf
$
Fixes: 454c407ec1 ("perf: add perf-inject builtin")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Tom Zanussi <tzanussi@gmail.com>
Link: https://lore.kernel.org/r/20220621125144.5623-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
To pick the changes from:
d6d0c7f681 ("x86/cpufeatures: Add PerfMonV2 feature bit")
296d5a17e7 ("KVM: SEV-ES: Use V_TSC_AUX if available instead of RDTSC/MSR_TSC_AUX intercepts")
f30903394e ("x86/cpufeatures: Add virtual TSC_AUX feature bit")
8ad7e8f696 ("x86/fpu/xsave: Support XSAVEC in the kernel")
59bd54a84d ("x86/tdx: Detect running as a TDX guest in early boot")
a77d41ac3a ("x86/cpufeatures: Add AMD Fam19h Branch Sampling feature")
This only causes these perf files to be rebuilt:
CC /tmp/build/perf/bench/mem-memcpy-x86-64-asm.o
CC /tmp/build/perf/bench/mem-memset-x86-64-asm.o
And addresses this perf build warning:
Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h'
diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h
Warning: Kernel ABI header at 'tools/arch/x86/include/asm/disabled-features.h' differs from latest version at 'arch/x86/include/asm/disabled-features.h'
diff -u tools/arch/x86/include/asm/disabled-features.h arch/x86/include/asm/disabled-features.h
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Babu Moger <babu.moger@amd.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/lkml/YrDkgmwhLv+nKeOo@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
To pick up the changes in:
ecf8eca51f ("drm/i915/xehp: Add compute engine ABI")
991b4de327 ("drm/i915/uapi: Add kerneldoc for engine class enum")
c94fde8f51 ("drm/i915/uapi: Add DRM_I915_QUERY_GEOMETRY_SUBSLICES")
1c671ad753 ("drm/i915/doc: Link query items to their uapi structs")
a2e5402691 ("drm/i915/doc: Convert perf UAPI comments to kerneldoc")
462ac1cdf4 ("drm/i915/doc: Convert drm_i915_query_topology_info comment to kerneldoc")
034d47b25b ("drm/i915/uapi: Document DRM_I915_QUERY_HWCONFIG_BLOB")
78e1fb3112 ("drm/i915/uapi: Add query for hwconfig blob")
That don't add any new ioctl, so no changes in tooling.
This silences this perf build warning:
Warning: Kernel ABI header at 'tools/include/uapi/drm/i915_drm.h' differs from latest version at 'include/uapi/drm/i915_drm.h'
diff -u tools/include/uapi/drm/i915_drm.h include/uapi/drm/i915_drm.h
Cc: John Harrison <John.C.Harrison@intel.com>
Cc: Matt Atwood <matthew.s.atwood@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://lore.kernel.org/lkml/YrDi4ALYjv9Mdocq@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Free string allocated by asprintf().
Fixes: d8fc085509 ("perf inject: Keep a copy of kcore_dir")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20220620103904.7960-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Fix a boot crash on a c8000 machine as reported by Dave. Basically it changes
patch_map() to return an alias mapping to the to-be-patched code in order to
prevent writing to write-protected memory.
Signed-off-by: Helge Deller <deller@gmx.de>
Suggested-by: John David Anglin <dave.anglin@bell.net>
Cc: stable@vger.kernel.org # v5.2+
Link: https://lore.kernel.org/all/e8ec39e8-25f8-e6b4-b7ed-4cb23efc756e@bell.net/
Anonymous pages are allocated with the shared mappings colouring,
SHM_COLOUR. Since the alias boundary on machines with PA8800 and
PA8900 processors is unknown, flush_user_cache_page() might not
flush all mappings of a shared anonymous page. Flushing the whole
data cache flushes all mappings.
This won't fix all coherency issues with shared mappings but it
seems to work well in practice. I haven't seen any random memory
faults in almost a month on a rp3440 running as a debian buildd
machine.
There is a small preformance hit.
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # v5.18+
Module object files can contain an undefined reference to __this_module,
which isn't resolved until we link the final .ko. The kernel doesn't
export this symbol, so ignore it in gen_autoksyms.sh.
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Tested-by: Steve Muckle <smuckle@google.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Ramji Jiyani <ramjiyani@google.com>
If CONFIG_TRIM_UNUSED_KSYMS is enabled and the kernel is built from
a pristine state, the vmlinux is linked twice.
Commit 3fdc7d3fe4 ("kbuild: link vmlinux only once for
CONFIG_TRIM_UNUSED_KSYMS") explains why this happens, but it did not fix
the issue at all.
Now I realized I had applied a wrong patch.
In v1 patch [1], the autoksyms_recursive target correctly recurses to
"$(MAKE) -f $(srctree)/Makefile autoksyms_recursive".
In v2 patch [2], I accidentally dropped the diff line, and it recurses to
"$(MAKE) -f $(srctree)/Makefile vmlinux".
Restore the code I intended in v1.
[1]: https://lore.kernel.org/linux-kbuild/1521045861-22418-8-git-send-email-yamada.masahiro@socionext.com/
[2]: https://lore.kernel.org/linux-kbuild/1521166725-24157-8-git-send-email-yamada.masahiro@socionext.com/
Fixes: 3fdc7d3fe4 ("kbuild: link vmlinux only once for CONFIG_TRIM_UNUSED_KSYMS")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Here are a set of IIO driver fixes for 5.19-rc4. Jonathan said it best
in his pull request to me, so I'll just quote it here below, as that's
the only changes we have right now for the char-misc driver tree:
1st set of IIO fixes for the 5.19 cycle.
Most of these have been in next for a long time. Unfortunately there
was one stray patch in the branch (wasn't a fix), so I've just rebased
to remove that.
* testing
- Fix a missing MODULE_LICENSE() warning by restricting possible build
configs.
* Various drivers
- Fix ordering of iio_get_trigger() being called before
iio_trigger_register()
* adi,admv1014
- Fix dubious x & !y warning.
* adi,axi-adc
- Fix missing of_node_put() in error and normal paths.
* aspeed,adc
- Add missing of_node_put()
* fsl,mma8452
- Fix broken probing from device tree.
- Drop check on return value of i2c write to device to cause reset as
ACK will be missing (device reset before sending it).
* fsl,vf610
- Fix documentation of in_conversion_mode ABI.
* iio-trig-sysfs
- Ensure irq work has finished before freeing the trigger.
* invensense,mpu3050
- Disable regulators in error path.
* invensense,icm42600
- Fix collision of enum value of 0 with error path where 0 is no match.
* renesas,rzg2l_Adc
- Add missing fwnode_handle_put() in error path.
* rescale
- Fix a boolean logic bug for detection of raw + scale affecting an
obscure corner case.
* semtech,sx9324
- Check return value of read of pin_defs
* st,stm32-adc:
- Fix interaction across ADC instances for some supported devices.
- Drop false spurious IRQ messages.
- Fix calibration value handling. If we can't calibrate don't expose the
vref_int channel.
- Fix maximum clock rate for stm32pm15x
* ti,ads131e08
- Add missing fwnode_handle_put() in error paths.
* xilinx,ams
- Fix variable checked for error from platform_get_irq()
* x-powers,axp288
- Overide TS_PIN bias current for boards where it is not correctly
initialized.
* yamaha,yas530
- Fix inverted check on calibration data being all zeros.
All of these have been in linux-next for a while with no reported
problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull IIO driver fixes from Greg KH:
"Here are a set of IIO driver fixes for 5.19-rc4. Jonathan said it best
in his pull request to me, so I'll just quote it here below, as that's
the only changes we have right now for the char-misc driver tree:
testing:
- Fix a missing MODULE_LICENSE() warning by restricting possible
build configs.
Various drivers:
- Fix ordering of iio_get_trigger() being called before
iio_trigger_register()
adi,admv1014:
- Fix dubious x & !y warning.
adi,axi-adc:
- Fix missing of_node_put() in error and normal paths.
aspeed,adc:
- Add missing of_node_put()
fsl,mma8452:
- Fix broken probing from device tree.
- Drop check on return value of i2c write to device to cause reset
as ACK will be missing (device reset before sending it).
fsl,vf610:
- Fix documentation of in_conversion_mode ABI.
iio-trig-sysfs:
- Ensure irq work has finished before freeing the trigger.
invensense,mpu3050:
- Disable regulators in error path.
invensense,icm42600:
- Fix collision of enum value of 0 with error path where 0 is no
match.
renesas,rzg2l_Adc:
- Add missing fwnode_handle_put() in error path.
rescale:
- Fix a boolean logic bug for detection of raw + scale affecting
an obscure corner case.
semtech,sx9324:
- Check return value of read of pin_defs
st,stm32-adc:
- Fix interaction across ADC instances for some supported devices.
- Drop false spurious IRQ messages.
- Fix calibration value handling. If we can't calibrate don't
expose the vref_int channel.
- Fix maximum clock rate for stm32pm15x
ti,ads131e08:
- Add missing fwnode_handle_put() in error paths.
xilinx,ams:
- Fix variable checked for error from platform_get_irq()
x-powers,axp288:
- Overide TS_PIN bias current for boards where it is not correctly
initialized.
yamaha,yas530:
- Fix inverted check on calibration data being all zeros.
All of these have been in linux-next for a while with no reported
problems"
* tag 'char-misc-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (26 commits)
iio:proximity:sx9324: Check ret value of device_property_read_u32_array()
iio: accel: mma8452: ignore the return value of reset operation
iio: adc: stm32: fix maximum clock rate for stm32mp15x
iio: adc: stm32: fix vrefint wrong calibration value handling
iio: imu: inv_icm42600: Fix broken icm42600 (chip id 0 value)
iio: adc: vf610: fix conversion mode sysfs node name
iio: adc: adi-axi-adc: Fix refcount leak in adi_axi_adc_attach_client
iio: test: fix missing MODULE_LICENSE for IIO_RESCALE=m
iio:humidity:hts221: rearrange iio trigger get and register
iio:chemical:ccs811: rearrange iio trigger get and register
iio:accel:mxc4005: rearrange iio trigger get and register
iio:accel:kxcjk-1013: rearrange iio trigger get and register
iio:accel:bma180: rearrange iio trigger get and register
iio: afe: rescale: Fix boolean logic bug
iio: adc: aspeed: Fix refcount leak in aspeed_adc_set_trim_data
iio: adc: stm32: Fix IRQs on STM32F4 by removing custom spurious IRQs message
iio: adc: stm32: Fix ADCs iteration in irq handler
iio: adc: ti-ads131e08: add missing fwnode_handle_put() in ads131e08_alloc_channels()
iio: adc: rzg2l_adc: add missing fwnode_handle_put() in rzg2l_adc_parse_properties()
iio: trigger: sysfs: fix use-after-free on remove
...
Here are some small USB driver fixes and new device ids for 5.19-rc4 for
a few small reported issues. They include:
- new usb-serial driver ids
- MAINTAINERS file update to properly catch the USB dts files
- dt-bindings fixes for reported build warnings
- xhci driver fixes for reported problems
- typec Kconfig dependancy fix
- raw_gadget fuzzing fixes found by syzbot
- chipidea driver bugfix
- usb gadget uvc bugfix
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB driver fixes from Greg KH:
"Here are some small USB driver fixes and new device ids for 5.19-rc4
for a few small reported issues. They include:
- new usb-serial driver ids
- MAINTAINERS file update to properly catch the USB dts files
- dt-bindings fixes for reported build warnings
- xhci driver fixes for reported problems
- typec Kconfig dependancy fix
- raw_gadget fuzzing fixes found by syzbot
- chipidea driver bugfix
- usb gadget uvc bugfix
All of these have been in linux-next with no reported issues"
* tag 'usb-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: chipidea: udc: check request status before setting device address
USB: gadget: Fix double-free bug in raw_gadget driver
xhci-pci: Allow host runtime PM as default for Intel Meteor Lake xHCI
xhci-pci: Allow host runtime PM as default for Intel Raptor Lake xHCI
xhci: turn off port power in shutdown
xhci: Keep interrupt disabled in initialization until host is running.
USB: serial: option: add Quectel RM500K module support
USB: serial: option: add Quectel EM05-G modem
USB: serial: pl2303: add support for more HXN (G) types
usb: typec: wcove: Drop wrong dependency to INTEL_SOC_PMIC
usb: gadget: uvc: fix list double add in uvcg_video_pump
dt-bindings: usb: ehci: Increase the number of PHYs
dt-bindings: usb: ohci: Increase the number of PHYs
usb: gadget: Fix non-unique driver names in raw-gadget driver
MAINTAINERS: add include/dt-bindings/usb to USB SUBSYSTEM
USB: serial: option: add Telit LE910Cx 0x1250 composition
This includes some urgent fixes to avoid generating corrupted inodes
caused by compressed and inline_data files. In addition, another patch
tries to avoid wrong error report which prevents a roll-forward
recovery.
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Merge tag 'f2fs-for-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs fixes from Jaegeuk Kim:
"Some urgent fixes to avoid generating corrupted inodes caused by
compressed and inline_data files.
In addition, avoid a wrong error report which prevents a roll-forward
recovery"
* tag 'f2fs-for-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs:
f2fs: do not count ENOENT for error case
f2fs: fix iostat related lock protection
f2fs: attach inline_data after setting compression
compute_return_era() always returns 0, make it return void,
and then no need to check its return value for its callers.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
According to the configuration information accessible by the CPUCFG
instruction in LoongArch Reference Manual [1], FP_ver is stored in
bit [5: 3] of CPUCFG2, the current code to get fpu version is wrong,
use CPUCFG2_FPVERS to fix it.
[1] https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html
Fixes: 628c3bb40e ("LoongArch: Add boot and setup routines")
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
setup_tlb_handler() is expected to set per-cpu exception handlers, but
it only set the TLBRENTRY successfully because of copy & paste errors,
so fix it.
Reviewed-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
_stext means the start of .text section (see __is_kernel_text()), but we
put its definition in .ref.text by mistake. Fix it by defining it in the
vmlinux.lds.S.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Fix the !THP build by making pmd_pfn() available in all configurations.
Because pmd_pfn() is used in mm/page_vma_mapped.c whether or not THP is
configured.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
