Commit Graph

1121878 Commits

Author SHA1 Message Date
Linus Torvalds
15b3f48a43 Kbuild fixes for v6.0
- Fix module versioning broken on some architectures
 
  - Make dummy-tools enable CONFIG_PPC_LONG_DOUBLE_128
 
  - Remove -Wformat-zero-length, which has no warning instance
 
  - Fix the order between drivers and libs in modules.order
 
  - Fix false-positive warnings in clang-analyzer
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Merge tag 'kbuild-fixes-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Fix module versioning broken on some architectures

 - Make dummy-tools enable CONFIG_PPC_LONG_DOUBLE_128

 - Remove -Wformat-zero-length, which has no warning instance

 - Fix the order between drivers and libs in modules.order

 - Fix false-positive warnings in clang-analyzer

* tag 'kbuild-fixes-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  scripts/clang-tools: Remove DeprecatedOrUnsafeBufferHandling check
  kbuild: fix the modules order between drivers and libs
  scripts/Makefile.extrawarn: Do not disable clang's -Wformat-zero-length
  kbuild: dummy-tools: pretend we understand __LONG_DOUBLE_128__
  modpost: fix module versioning when a symbol lacks valid CRC
2022-08-20 14:55:38 -07:00
Linus Torvalds
16b3d851c0 perf tools fixes for v6.0: 1st batch
- Fix alignment for cpu map masks in event encoding.
 
 - Support reading PERF_FORMAT_LOST, perf tool counterpart for a feature
   that was added in this merge window.
 
 - Sync perf tools copies of kernel headers: socket, msr-index, fscrypt,
   cpufeatures, i915_drm, kvm, vhost, perf_event.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-fixes-for-v6.0-2022-08-19' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix alignment for cpu map masks in event encoding.

 - Support reading PERF_FORMAT_LOST, perf tool counterpart for a feature
   that was added in this merge window.

 - Sync perf tools copies of kernel headers: socket, msr-index, fscrypt,
   cpufeatures, i915_drm, kvm, vhost, perf_event.

* tag 'perf-tools-fixes-for-v6.0-2022-08-19' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf tools: Support reading PERF_FORMAT_LOST
  libperf: Add a test case for read formats
  libperf: Handle read format in perf_evsel__read()
  tools headers UAPI: Sync linux/perf_event.h with the kernel sources
  tools headers UAPI: Sync x86's asm/kvm.h with the kernel sources
  tools headers UAPI: Sync KVM's vmx.h header with the kernel sources
  tools include UAPI: Sync linux/vhost.h with the kernel sources
  tools headers kvm s390: Sync headers with the kernel sources
  tools headers UAPI: Sync linux/kvm.h with the kernel sources
  tools headers UAPI: Sync drm/i915_drm.h with the kernel sources
  tools headers cpufeatures: Sync with the kernel sources
  tools headers UAPI: Sync linux/fscrypt.h with the kernel sources
  tools arch x86: Sync the msr-index.h copy with the kernel sources
  perf beauty: Update copy of linux/socket.h with the kernel sources
  perf cpumap: Fix alignment for masks in event encoding
  perf cpumap: Compute mask size in constant time
  perf cpumap: Synthetic events and const/static
  perf cpumap: Const map for max()
2022-08-20 14:46:05 -07:00
Linus Torvalds
cc1807b915 s390 updates for 6.0-rc2
- Fix a KVM crash on z12 and older machines caused by a wrong
   assumption that Query AP Configuration Information is always
   available.
 
 - Lower severity of excessive Hypervisor filesystem error messages
   when booting under KVM.
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Merge tag 's390-6.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Alexander Gordeev:

 - Fix a KVM crash on z12 and older machines caused by a wrong
   assumption that Query AP Configuration Information is always
   available.

 - Lower severity of excessive Hypervisor filesystem error messages
   when booting under KVM.

* tag 's390-6.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/ap: fix crash on older machines based on QCI info missing
  s390/hypfs: avoid error message under KVM
2022-08-20 11:29:01 -07:00
Linus Torvalds
32dd68f110 powerpc fixes for 6.0 #3
- Fix atomic sleep warnings at boot due to get_phb_number() taking a mutex with a
    spinlock held on some machines.
 
  - Add missing PMU selftests to .gitignores.
 
 Thanks to: Guenter Roeck, Russell Currey.
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Merge tag 'powerpc-6.0-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Fix atomic sleep warnings at boot due to get_phb_number() taking a
   mutex with a spinlock held on some machines.

 - Add missing PMU selftests to .gitignores.

Thanks to Guenter Roeck and Russell Currey.

* tag 'powerpc-6.0-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  selftests/powerpc: Add missing PMU selftests to .gitignores
  powerpc/pci: Fix get_phb_number() locking
2022-08-20 11:20:37 -07:00
Linus Torvalds
f31c32efd5 v6.0 first rc pull request
A few minor fixes:
  - Fix buffer management in SRP to correct a regression with the login
    authentication feature from v5.17
 
  - Don't iterate over non-present ports in mlx5
 
  - Fix an error introduced by the foritify work in cxgb4
 
  - Two bug fixes for the recently merged ERDMA driver
 
  - Unbreak RDMA dmabuf support, a regresion from v5.19
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "A few minor fixes:

   - Fix buffer management in SRP to correct a regression with the login
     authentication feature from v5.17

   - Don't iterate over non-present ports in mlx5

   - Fix an error introduced by the foritify work in cxgb4

   - Two bug fixes for the recently merged ERDMA driver

   - Unbreak RDMA dmabuf support, a regresion from v5.19"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA: Handle the return code from dma_resv_wait_timeout() properly
  RDMA/erdma: Correct the max_qp and max_cq capacities of the device
  RDMA/erdma: Using the key in FMR WR instead of MR structure
  RDMA/cxgb4: fix accept failure due to increased cpl_t5_pass_accept_rpl size
  RDMA/mlx5: Use the proper number of ports
  IB/iser: Fix login with authentication
2022-08-20 10:49:02 -07:00
Guru Das Srinagesh
4be72c1b9f scripts/clang-tools: Remove DeprecatedOrUnsafeBufferHandling check
This `clang-analyzer` check flags the use of memset(), suggesting a more
secure version of the API, such as memset_s(), which does not exist in
the kernel:

  warning: Call to function 'memset' is insecure as it does not provide
  security checks introduced in the C11 standard. Replace with analogous
  functions that support length arguments or provides boundary checks such
  as 'memset_s' in case of C11
  [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling]

Signed-off-by: Guru Das Srinagesh <quic_gurus@quicinc.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-21 02:47:49 +09:00
Masahiro Yamada
113147510b kbuild: fix the modules order between drivers and libs
Commit b2c8855491 ("kbuild: update modules.order only when contained
modules are updated") accidentally changed the modules order.

Prior to that commit, the modules order was determined based on
vmlinux-dirs, which lists core-y/m, drivers-y/m, libs-y/m, in this order.

Now, subdir-modorder lists them in a different order: core-y/m, libs-y/m,
drivers-y/m.

Presumably, there was no practical issue because the modules in drivers
and libs are orthogonal, but there is no reason to have this distortion.

Get back to the original order.

Fixes: b2c8855491 ("kbuild: update modules.order only when contained modules are updated")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-21 02:47:49 +09:00
Nathan Chancellor
370655bc18 scripts/Makefile.extrawarn: Do not disable clang's -Wformat-zero-length
There are no instances of this warning in the tree across several
difference architectures and configurations. This was added by
commit 26ea6bb1fe ("kbuild, LLVMLinux: Supress warnings unless W=1-3")
back in 2014, where it might have been necessary, but there are no
instances of it now so stop disabling it to increase warning coverage
for clang.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-21 02:47:48 +09:00
Jiri Slaby
0df499eaf3 kbuild: dummy-tools: pretend we understand __LONG_DOUBLE_128__
There is a test in powerpc's Kconfig which checks __LONG_DOUBLE_128__
and sets CONFIG_PPC_LONG_DOUBLE_128 if it is understood by the compiler.

We currently don't handle it, so this results in PPC_LONG_DOUBLE_128 not
being in super-config generated by dummy-tools. So take this into
account in the gcc script and preprocess __LONG_DOUBLE_128__ as "1".

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-21 02:47:48 +09:00
Masahiro Yamada
5b8a9a8fd1 modpost: fix module versioning when a symbol lacks valid CRC
Since commit 7b4537199a ("kbuild: link symbol CRCs at final link,
removing CONFIG_MODULE_REL_CRCS"), module versioning is broken on
some architectures. Loading a module fails with "disagrees about
version of symbol module_layout".

On such architectures (e.g. ARCH=sparc build with sparc64_defconfig),
modpost shows a warning, like follows:

  WARNING: modpost: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
  Is "_mcount" prototyped in <asm/asm-prototypes.h>?

Previously, it was a harmless warning (CRC check was just skipped),
but now wrong CRCs are used for comparison because invalid CRCs are
just skipped.

  $ sparc64-linux-gnu-nm -n vmlinux
    [snip]
  0000000000c2cea0 r __ksymtab__kstrtol
  0000000000c2ceb8 r __ksymtab__kstrtoul
  0000000000c2ced0 r __ksymtab__local_bh_enable
  0000000000c2cee8 r __ksymtab__mcount
  0000000000c2cf00 r __ksymtab__printk
  0000000000c2cf18 r __ksymtab__raw_read_lock
  0000000000c2cf30 r __ksymtab__raw_read_lock_bh
    [snip]
  0000000000c53b34 D __crc__kstrtol
  0000000000c53b38 D __crc__kstrtoul
  0000000000c53b3c D __crc__local_bh_enable
  0000000000c53b40 D __crc__printk
  0000000000c53b44 D __crc__raw_read_lock
  0000000000c53b48 D __crc__raw_read_lock_bh

Please notice __crc__mcount is missing here.

When the module subsystem looks up a CRC that comes after, it results
in reading out a wrong address. For example, when __crc__printk is
needed, the module subsystem reads 0xc53b44 instead of 0xc53b40.

All CRC entries must be output for correct index accessing. Invalid
CRCs will be unused, but are needed to keep the one-to-one mapping
between __ksymtab_* and __crc_*.

The best is to fix all modpost warnings, but several warnings are still
remaining on less popular architectures.

Fixes: 7b4537199a ("kbuild: link symbol CRCs at final link, removing CONFIG_MODULE_REL_CRCS")
Reported-by: matoro <matoro_mailinglist_kernel@matoro.tk>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: matoro <matoro_mailinglist_kernel@matoro.tk>
2022-08-21 02:47:36 +09:00
Linus Torvalds
b9bce6e553 block-6.0-2022-08-19
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Merge tag 'block-6.0-2022-08-19' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A few fixes that should go into this release:

   - Small series of patches for ublk (ZiyangZhang)

   - Remove dead function (Yu)

   - Fix for running a block queue in case of resource starvation
     (Yufen)"

* tag 'block-6.0-2022-08-19' of git://git.kernel.dk/linux-block:
  blk-mq: run queue no matter whether the request is the last request
  blk-mq: remove unused function blk_mq_queue_stopped()
  ublk_drv: do not add a re-issued request aborted previously to ioucmd's task_work
  ublk_drv: update comment for __ublk_fail_req()
  ublk_drv: check ubq_daemon_is_dying() in __ublk_rq_task_work()
  ublk_drv: update iod->addr for UBLK_IO_NEED_GET_DATA
2022-08-20 10:17:05 -07:00
Linus Torvalds
beaf139709 io_uring-6.0-2022-08-19
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Merge tag 'io_uring-6.0-2022-08-19' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "A few fixes for regressions in this cycle:

   - Two instances of using the wrong "has async data" helper (Pavel)

   - Fixup zero-copy address import (Pavel)

   - Bump zero-copy notification slot limit (Pavel)"

* tag 'io_uring-6.0-2022-08-19' of git://git.kernel.dk/linux-block:
  io_uring/net: use right helpers for async_data
  io_uring/notif: raise limit on notification slots
  io_uring/net: improve zc addr import error handling
  io_uring/net: use right helpers for async recycle
2022-08-20 09:49:22 -07:00
Linus Torvalds
044610f8e4 ATA fixes for 6.0-rc2
* Add a missing command name definition for ata_get_cmd_name(), from me.
 
 * A fix to address a performance regression due to the default max_sectors queue limit for ATA devices connected
   to AHCI adapters being too small, from John.
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Merge tag 'ata-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata

Pull ATA fixes from Damien Le Moal:

 - Add a missing command name definition for ata_get_cmd_name(), from
   me.

 - A fix to address a performance regression due to the default
   max_sectors queue limit for ATA devices connected to AHCI adapters
   being too small, from John.

* tag 'ata-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
  ata: libata: Set __ATA_BASE_SHT max_sectors
  ata: libata-eh: Add missing command name
2022-08-20 09:43:45 -07:00
Linus Torvalds
4d099c3329 MMC host:
- meson-gx: Fix error handling in ->probe()
  - mtk-sd: Fix a command problem when using cqe off/disable
  - pxamci: Fix error handling in ->probe()
  - sdhci-of-dwcmshc: Fix broken support for the BlueField-3 variant
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Merge tag 'mmc-v6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC host fixes from Ulf Hansson:

 - meson-gx: Fix error handling in ->probe()

 - mtk-sd: Fix a command problem when using cqe off/disable

 - pxamci: Fix error handling in ->probe()

 - sdhci-of-dwcmshc: Fix broken support for the BlueField-3 variant

* tag 'mmc-v6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci-of-dwcmshc: Re-enable support for the BlueField-3 SoC
  mmc: meson-gx: Fix an error handling path in meson_mmc_probe()
  mmc: mtk-sd: Clear interrupts when cqe off/disable
  mmc: pxamci: Fix another error handling path in pxamci_probe()
  mmc: pxamci: Fix an error handling path in pxamci_probe()
2022-08-20 09:39:00 -07:00
John Garry
a357f7b458 ata: libata: Set __ATA_BASE_SHT max_sectors
Commit 0568e61225 ("ata: libata-scsi: cap ata_device->max_sectors
according to shost->max_sectors") inadvertently capped the max_sectors
value for some SATA disks to a value which is lower than we would want.

For a device which supports LBA48, we would previously have request queue
max_sectors_kb and max_hw_sectors_kb values of 1280 and 32767 respectively.

For AHCI controllers, the value chosen for shost max sectors comes from
the minimum of the SCSI host default max sectors in
SCSI_DEFAULT_MAX_SECTORS (1024) and the shost DMA device mapping limit.

This means that we would now set the max_sectors_kb and max_hw_sectors_kb
values for a disk which supports LBA48 at 512, ignoring DMA mapping limit.

As report by Oliver at [0], this caused a performance regression.

Fix by picking a large enough max sectors value for ATA host controllers
such that we don't needlessly reduce max_sectors_kb for LBA48 disks.

[0] https://lore.kernel.org/linux-ide/YvsGbidf3na5FpGb@xsang-OptiPlex-9020/T/#m22d9fc5ad15af66066dd9fecf3d50f1b1ef11da3

Fixes: 0568e61225 ("ata: libata-scsi: cap ata_device->max_sectors according to shost->max_sectors")
Reported-by: Oliver Sang <oliver.sang@intel.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
2022-08-21 01:29:50 +09:00
Linus Torvalds
50cd95ac46 execve fix for v6.0-rc2
- Replace remaining kmap() uses with kmap_local_page() (Fabio M. De Francesco)
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Merge tag 'execve-v6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull execve fix from Kees Cook:

 - Replace remaining kmap() uses with kmap_local_page() (Fabio M. De
   Francesco)

* tag 'execve-v6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  exec: Replace kmap{,_atomic}() with kmap_local_page()
2022-08-19 14:02:24 -07:00
Linus Torvalds
e45c890140 hardening fixes for v6.0-rc2
- Also undef LATENT_ENTROPY_PLUGIN for per-file disabling (Andrew Donnellan)
 
 - Return EFAULT on copy_from_user() failures in LoadPin (Kees Cook)
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Merge tag 'hardening-v6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening fixes from Kees Cook:

 - Also undef LATENT_ENTROPY_PLUGIN for per-file disabling (Andrew
   Donnellan)

 - Return EFAULT on copy_from_user() failures in LoadPin (Kees Cook)

* tag 'hardening-v6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  gcc-plugins: Undefine LATENT_ENTROPY_PLUGIN when plugin disabled for a file
  LoadPin: Return EFAULT on copy_from_user() failures
2022-08-19 13:56:14 -07:00
Linus Torvalds
8fd00059cc RISC-V Fixes for 6.0-rc2
* A fix to make the ISA extension static keys writable after init.  This
   manifests at least as a crash when loading modules (including KVM).
 * A fixup for a build warning related to a poorly formed comment in our
   perf driver.
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Merge tag 'riscv-for-linus-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - A fix to make the ISA extension static keys writable after init. This
   manifests at least as a crash when loading modules (including KVM).

 - A fixup for a build warning related to a poorly formed comment in our
   perf driver.

* tag 'riscv-for-linus-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  perf: riscv legacy: fix kerneldoc comment warning
  riscv: Ensure isa-ext static keys are writable
2022-08-19 13:49:07 -07:00
Linus Torvalds
ca052cfd6e ARM:
* Fix unexpected sign extension of KVM_ARM_DEVICE_ID_MASK
 
 * Tidy-up handling of AArch32 on asymmetric systems
 
 x86:
 
 * Fix "missing ENDBR" BUG for fastop functions
 
 Generic:
 
 * Some cleanup and static analyzer patches
 
 * More fixes to KVM_CREATE_VM unwind paths
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "ARM:

   - Fix unexpected sign extension of KVM_ARM_DEVICE_ID_MASK

   - Tidy-up handling of AArch32 on asymmetric systems

  x86:

   - Fix 'missing ENDBR' BUG for fastop functions

  Generic:

   - Some cleanup and static analyzer patches

   - More fixes to KVM_CREATE_VM unwind paths"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: Drop unnecessary initialization of "ops" in kvm_ioctl_create_device()
  KVM: Drop unnecessary initialization of "npages" in hva_to_pfn_slow()
  x86/kvm: Fix "missing ENDBR" BUG for fastop functions
  x86/kvm: Simplify FOP_SETCC()
  x86/ibt, objtool: Add IBT_NOSEAL()
  KVM: Rename mmu_notifier_* to mmu_invalidate_*
  KVM: Rename KVM_PRIVATE_MEM_SLOTS to KVM_INTERNAL_MEM_SLOTS
  KVM: MIPS: remove unnecessary definition of KVM_PRIVATE_MEM_SLOTS
  KVM: Move coalesced MMIO initialization (back) into kvm_create_vm()
  KVM: Unconditionally get a ref to /dev/kvm module when creating a VM
  KVM: Properly unwind VM creation if creating debugfs fails
  KVM: arm64: Reject 32bit user PSTATE on asymmetric systems
  KVM: arm64: Treat PMCR_EL1.LC as RES1 on asymmetric systems
  KVM: arm64: Fix compile error due to sign extension
2022-08-19 13:40:11 -07:00
Linus Torvalds
42c54d5491 for-6.0-rc1-tag
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Merge tag 'for-6.0-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:
 "A few short fixes and a lockdep warning fix (needs moving some code):

   - tree-log replay fixes:
      - fix error handling when looking up extent refs
      - fix warning when setting inode number of links

   - relocation fixes:
      - reset block group read-only status when relocation fails
      - unset control structure if transaction fails when starting
        to process a block group
      - add lockdep annotations to fix a warning during relocation
        where blocks temporarily belong to another tree and can lead
        to reversed dependencies

   - tree-checker verifies that extent items don't overlap"

* tag 'for-6.0-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: tree-checker: check for overlapping extent items
  btrfs: fix warning during log replay when bumping inode link count
  btrfs: fix lost error handling when looking up extended ref on log replay
  btrfs: fix lockdep splat with reloc root extent buffers
  btrfs: move lockdep class helpers to locking.c
  btrfs: unset reloc control if transaction commit fails in prepare_to_relocate()
  btrfs: reset RO counter on block group if we fail to relocate
2022-08-19 13:33:48 -07:00
Linus Torvalds
a3a78b6332 4 ksmbd server fixes
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Merge tag '5.20-rc2-ksmbd-smb3-server-fixes' of git://git.samba.org/ksmbd

Pull ksmbd server fixes from Steve French:

 - important sparse file fix

 - allocation size fix

 - fix incorrect rc on bad share

 - share config fix

* tag '5.20-rc2-ksmbd-smb3-server-fixes' of git://git.samba.org/ksmbd:
  ksmbd: don't remove dos attribute xattr on O_TRUNC open
  ksmbd: remove unnecessary generic_fillattr in smb2_open
  ksmbd: request update to stale share config
  ksmbd: return STATUS_BAD_NETWORK_NAME error status if share is not configured
2022-08-19 13:26:52 -07:00
Namhyung Kim
f52679b788 perf tools: Support reading PERF_FORMAT_LOST
The recent kernel added lost count can be read from either read(2) or
ring buffer data with PERF_SAMPLE_READ.  As it's a variable length data
we need to access it according to the format info.

But for perf tools use cases, PERF_FORMAT_ID is always set.  So we can
only check PERF_FORMAT_LOST bit to determine the data format.

Add sample_read_value_size() and next_sample_read_value() helpers to
make it a bit easier to access.  Use them in all places where it reads
the struct sample_read_value.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220819003644.508916-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:56:56 -03:00
Namhyung Kim
6d395a5135 libperf: Add a test case for read formats
It checks a various combination of the read format settings and verify
it return the value in a proper position.  The test uses task-clock
software events to guarantee it's always active and sets enabled/running
time.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220819003644.508916-4-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:56:44 -03:00
Namhyung Kim
89e3106fa2 libperf: Handle read format in perf_evsel__read()
The perf_counts_values should be increased to read the new lost data.
Also adjust values after read according the read format.

This supports PERF_FORMAT_GROUP which has a different data format but
it's only available for leader events.  Currently it doesn't have an API
to read sibling (member) events in the group.  But users may read the
sibling event directly.

Also reading from mmap would be disabled when the read format has ID or
LOST bit as it's not exposed via mmap.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220819003644.508916-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:56:27 -03:00
Namhyung Kim
65ba872a69 tools headers UAPI: Sync linux/perf_event.h with the kernel sources
To pick the trivial change in:

  119a784c81 ("perf/core: Add a new read format to get a number of lost samples")

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220819003644.508916-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:56:10 -03:00
Arnaldo Carvalho de Melo
e5bc0deae5 tools headers UAPI: Sync x86's asm/kvm.h with the kernel sources
To pick the changes in:

  43bb9e000e ("KVM: x86: Tweak name of MONITOR/MWAIT #UD quirk to make it #UD specific")
  94dfc73e7c ("treewide: uapi: Replace zero-length arrays with flexible-array members")
  bfbcc81bb8 ("KVM: x86: Add a quirk for KVM's "MONITOR/MWAIT are NOPs!" behavior")
  b172862241 ("KVM: x86: PIT: Preserve state of speaker port data bit")
  ed2351174e ("KVM: x86: Extend KVM_{G,S}ET_VCPU_EVENTS to support pending triple fault")

That just rebuilds kvm-stat.c on x86, no change in functionality.

This silences these perf build warning:

  Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/kvm.h' differs from latest version at 'arch/x86/include/uapi/asm/kvm.h'
  diff -u tools/arch/x86/include/uapi/asm/kvm.h arch/x86/include/uapi/asm/kvm.h

Cc: Chenyi Qiang <chenyi.qiang@intel.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Paul Durrant <pdurrant@amazon.com>
Link: https://lore.kernel.org/lkml/Yv6OMPKYqYSbUxwZ@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:30:34 -03:00
Arnaldo Carvalho de Melo
eea085d114 tools headers UAPI: Sync KVM's vmx.h header with the kernel sources
To pick the changes in:

  2f4073e08f ("KVM: VMX: Enable Notify VM exit")

That makes 'perf kvm-stat' aware of this new NOTIFY exit reason, thus
addressing the following perf build warning:

  Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/vmx.h' differs from latest version at 'arch/x86/include/uapi/asm/vmx.h'
  diff -u tools/arch/x86/include/uapi/asm/vmx.h arch/x86/include/uapi/asm/vmx.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Tao Xu <tao3.xu@intel.com>
Link: http://lore.kernel.org/lkml/Yv6LavXMZ+njijpq@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:30:34 -03:00
Arnaldo Carvalho de Melo
898d240346 tools include UAPI: Sync linux/vhost.h with the kernel sources
To get the changes in:

  f345a0143b ("vhost-vdpa: uAPI to suspend the device")

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	2022-08-18 09:46:12.355958316 -0300
  +++ after	2022-08-18 09:46:19.701182822 -0300
  @@ -29,6 +29,7 @@
   	[0x75] = "VDPA_SET_VRING_ENABLE",
   	[0x77] = "VDPA_SET_CONFIG_CALL",
   	[0x7C] = "VDPA_SET_GROUP_ASID",
  +	[0x7D] = "VDPA_SUSPEND",
   };
   = {
   	[0x00] = "GET_FEATURES",
  $

For instance, see how those 'cmd' ioctl arguments get translated, now
VDPA_SUSPEND will be as well:

  # perf trace -a -e ioctl --max-events=10
       0.000 ( 0.011 ms): pipewire/2261 ioctl(fd: 60, cmd: SNDRV_PCM_HWSYNC, arg: 0x1)                        = 0
      21.353 ( 0.014 ms): pipewire/2261 ioctl(fd: 60, cmd: SNDRV_PCM_HWSYNC, arg: 0x1)                        = 0
      25.766 ( 0.014 ms): gnome-shell/2196 ioctl(fd: 14, cmd: DRM_I915_IRQ_WAIT, arg: 0x7ffe4a22c740)            = 0
      25.845 ( 0.034 ms): gnome-shel:cs0/2212 ioctl(fd: 14, cmd: DRM_I915_IRQ_EMIT, arg: 0x7fd43915dc70)            = 0
      25.916 ( 0.011 ms): gnome-shell/2196 ioctl(fd: 9, cmd: DRM_MODE_ADDFB2, arg: 0x7ffe4a22c8a0)               = 0
      25.941 ( 0.025 ms): gnome-shell/2196 ioctl(fd: 9, cmd: DRM_MODE_ATOMIC, arg: 0x7ffe4a22c840)               = 0
      32.915 ( 0.009 ms): gnome-shell/2196 ioctl(fd: 9, cmd: DRM_MODE_RMFB, arg: 0x7ffe4a22cf9c)                 = 0
      42.522 ( 0.013 ms): gnome-shell/2196 ioctl(fd: 14, cmd: DRM_I915_IRQ_WAIT, arg: 0x7ffe4a22c740)            = 0
      42.579 ( 0.031 ms): gnome-shel:cs0/2212 ioctl(fd: 14, cmd: DRM_I915_IRQ_EMIT, arg: 0x7fd43915dc70)            = 0
      42.644 ( 0.010 ms): gnome-shell/2196 ioctl(fd: 9, cmd: DRM_MODE_ADDFB2, arg: 0x7ffe4a22c8a0)               = 0
  #

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Eugenio Pérez <eperezma@redhat.com>
Cc: Ian Rogers <irogers@google.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/Yv6Kb4OESuNJuH6X@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:30:34 -03:00
Arnaldo Carvalho de Melo
25f3089517 tools headers kvm s390: Sync headers with the kernel sources
To pick the changes in:

  f5ecfee944 ("KVM: s390: resetting the Topology-Change-Report")

None of them trigger any changes in tooling, this time this is just to silence
these perf build warnings:

  Warning: Kernel ABI header at 'tools/arch/s390/include/uapi/asm/kvm.h' differs from latest version at 'arch/s390/include/uapi/asm/kvm.h'
  diff -u tools/arch/s390/include/uapi/asm/kvm.h arch/s390/include/uapi/asm/kvm.h

Cc: Janosch Frank <frankja@linux.ibm.com>
Cc: Pierre Morel <pmorel@linux.ibm.com>
Link: http://lore.kernel.org/lkml/YvzwMXzaIzOU4WAY@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:30:34 -03:00
Arnaldo Carvalho de Melo
bf465ca809 tools headers UAPI: Sync linux/kvm.h with the kernel sources
To pick the changes in:

  8a061562e2 ("RISC-V: KVM: Add extensible CSR emulation framework")
  f5ecfee944 ("KVM: s390: resetting the Topology-Change-Report")
  450a563924 ("KVM: stats: Fix value for KVM_STATS_UNIT_MAX for boolean stats")
  1b870fa557 ("kvm: stats: tell userspace which values are boolean")
  db1c875e05 ("KVM: s390: add KVM_S390_ZPCI_OP to manage guest zPCI devices")
  94dfc73e7c ("treewide: uapi: Replace zero-length arrays with flexible-array members")
  084cc29f8b ("KVM: x86/MMU: Allow NX huge pages to be disabled on a per-vm basis")
  2f4073e08f ("KVM: VMX: Enable Notify VM exit")
  ed2351174e ("KVM: x86: Extend KVM_{G,S}ET_VCPU_EVENTS to support pending triple fault")
  e9bf3acb23 ("KVM: s390: Add KVM_CAP_S390_PROTECTED_DUMP")
  8aba09588d ("KVM: s390: Add CPU dump functionality")
  0460eb35b4 ("KVM: s390: Add configuration dump functionality")
  fe9a93e07b ("KVM: s390: pv: Add query dump information")
  35d02493db ("KVM: s390: pv: Add query interface")
  c24a950ec7 ("KVM, SEV: Add KVM_EXIT_SHUTDOWN metadata for SEV-ES")
  ffbb61d09f ("KVM: x86: Accept KVM_[GS]ET_TSC_KHZ as a VM ioctl.")
  661a20fab7 ("KVM: x86/xen: Advertise and document KVM_XEN_HVM_CONFIG_EVTCHN_SEND")
  fde0451be8 ("KVM: x86/xen: Support per-vCPU event channel upcall via local APIC")
  28d1629f75 ("KVM: x86/xen: Kernel acceleration for XENVER_version")
  5363952605 ("KVM: x86/xen: handle PV timers oneshot mode")
  942c2490c2 ("KVM: x86/xen: Add KVM_XEN_VCPU_ATTR_TYPE_VCPU_ID")
  2fd6df2f2b ("KVM: x86/xen: intercept EVTCHNOP_send from guests")
  35025735a7 ("KVM: x86/xen: Support direct injection of event channel events")

That just rebuilds perf, as these patches add just an ioctl that is S390
specific and may clash with other arches, so are so far being excluded
in the harvester script:

  $ tools/perf/trace/beauty/kvm_ioctl.sh > before
  $ cp include/uapi/linux/kvm.h tools/include/uapi/linux/kvm.h
  $ tools/perf/trace/beauty/kvm_ioctl.sh > after
  $ diff -u before after
  $ grep 390 tools/perf/trace/beauty/kvm_ioctl.sh
  	egrep -v " ((ARM|PPC|S390)_|[GS]ET_(DEBUGREGS|PIT2|XSAVE|TSC_KHZ)|CREATE_SPAPR_TCE_64)" | \
  $

This is also by now used by tools/testing/selftests/kvm/, a simple test
build succeeded.

This silences this perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h'
  diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h

Cc: Anup Patel <anup@brainfault.org>
Cc: Ben Gardon <bgardon@google.com>
Cc: Chenyi Qiang <chenyi.qiang@intel.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
Cc: Janosch Frank <frankja@linux.ibm.com>
Cc: João Martins <joao.m.martins@oracle.com>
Cc: Matthew Rosato <mjrosato@linux.ibm.com>
Cc: Oliver Upton <oupton@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Gonda <pgonda@google.com>
Cc: Pierre Morel <pmorel@linux.ibm.com>
Cc: Tao Xu <tao3.xu@intel.com>
Link: https://lore.kernel.org/lkml/YvzuryClcn%2FvA0Gn@kernel.org/
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:30:34 -03:00
Arnaldo Carvalho de Melo
54cd4cde7c tools headers UAPI: Sync drm/i915_drm.h with the kernel sources
To pick up the changes in:

  a913bde810 ("drm/i915: Update i915 uapi documentation")
  525e93f631 ("drm/i915/uapi: add NEEDS_CPU_ACCESS hint")
  141f733bb3 ("drm/i915/uapi: expose the avail tracking")
  3f4309cbdc ("drm/i915/uapi: add probed_cpu_visible_size")
  a50794f26f ("uapi/drm/i915: Document memory residency and Flat-CCS capability of obj")

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: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
Cc: Ramalingam C <ramalingam.c@intel.com>
Link: http://lore.kernel.org/lkml/Yvzrp9RFIeEkb5fI@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:30:34 -03:00
Arnaldo Carvalho de Melo
62ed93d199 tools headers cpufeatures: Sync with the kernel sources
To pick the changes from:

  2b12993220 ("x86/speculation: Add RSB VM Exit protections")
  28a99e95f5 ("x86/amd: Use IBPB for firmware calls")
  4ad3278df6 ("x86/speculation: Disable RRSBA behavior")
  26aae8ccbc ("x86/cpu/amd: Enumerate BTC_NO")
  9756bba284 ("x86/speculation: Fill RSB on vmexit for IBRS")
  3ebc170068 ("x86/bugs: Add retbleed=ibpb")
  2dbb887e87 ("x86/entry: Add kernel IBRS implementation")
  6b80b59b35 ("x86/bugs: Report AMD retbleed vulnerability")
  a149180fbc ("x86: Add magic AMD return-thunk")
  15e67227c4 ("x86: Undo return-thunk damage")
  a883d624ae ("x86/cpufeatures: Move RETPOLINE flags to word 11")
  aae99a7c9a ("x86/cpufeatures: Introduce x2AVIC CPUID bit")
  6f33a9daff ("x86: Fix comment for X86_FEATURE_ZEN")
  5180218615 ("x86/speculation/mmio: Enumerate Processor MMIO Stale Data bug")

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

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexandre Chartre <alexandre.chartre@oracle.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Daniel Sneddon <daniel.sneddon@linux.intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Cc: Wyes Karny <wyes.karny@amd.com>
Link: https://lore.kernel.org/lkml/Yvznmu5oHv0ZDN2w@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:30:33 -03:00
Arnaldo Carvalho de Melo
fabe0c61d8 tools headers UAPI: Sync linux/fscrypt.h with the kernel sources
To pick the changes from:

  6b2a51ff03 ("fscrypt: Add HCTR2 support for filename encryption")

That don't result in any changes in tooling, just causes this to be
rebuilt:

  CC      /tmp/build/perf-urgent/trace/beauty/sync_file_range.o
  LD      /tmp/build/perf-urgent/trace/beauty/perf-in.o

addressing this perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/linux/fscrypt.h' differs from latest version at 'include/uapi/linux/fscrypt.h'
  diff -u tools/include/uapi/linux/fscrypt.h include/uapi/linux/fscrypt.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nathan Huckleberry <nhuck@google.com>
Link: https://lore.kernel.org/lkml/Yvzl8C7O1b+hf9GS@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:30:33 -03:00
Arnaldo Carvalho de Melo
7f7f86a7bd tools arch x86: Sync the msr-index.h copy with the kernel sources
To pick up the changes in:

  2b12993220 ("x86/speculation: Add RSB VM Exit protections")
  4af184ee8b ("tools/power turbostat: dump secondary Turbo-Ratio-Limit")
  4ad3278df6 ("x86/speculation: Disable RRSBA behavior")
  d7caac991f ("x86/cpu/amd: Add Spectral Chicken")
  6ad0ad2bf8 ("x86/bugs: Report Intel retbleed vulnerability")
  c59a1f106f ("KVM: x86/pmu: Add IA32_PEBS_ENABLE MSR emulation for extended PEBS")
  465932db25 ("x86/cpu: Add new VMX feature, Tertiary VM-Execution control")
  027bbb884b ("KVM: x86/speculation: Disable Fill buffer clear within guests")
  5180218615 ("x86/speculation/mmio: Enumerate Processor MMIO Stale Data bug")

Addressing these tools/perf build warnings:

    diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h
    Warning: Kernel ABI header at 'tools/arch/x86/include/asm/msr-index.h' differs from latest version at 'arch/x86/include/asm/msr-index.h'

That makes the beautification scripts to pick some new entries:

  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > before
  $ cp arch/x86/include/asm/msr-index.h tools/arch/x86/include/asm/msr-index.h
  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > after
  $ diff -u before after
  --- before	2022-08-17 09:05:13.938246475 -0300
  +++ after	2022-08-17 09:05:22.221455851 -0300
  @@ -161,6 +161,7 @@
   	[0x0000048f] = "IA32_VMX_TRUE_EXIT_CTLS",
   	[0x00000490] = "IA32_VMX_TRUE_ENTRY_CTLS",
   	[0x00000491] = "IA32_VMX_VMFUNC",
  +	[0x00000492] = "IA32_VMX_PROCBASED_CTLS3",
   	[0x000004c1] = "IA32_PMC0",
   	[0x000004d0] = "IA32_MCG_EXT_CTL",
   	[0x00000560] = "IA32_RTIT_OUTPUT_BASE",
  @@ -212,6 +213,7 @@
   	[0x0000064D] = "PLATFORM_ENERGY_STATUS",
   	[0x0000064e] = "PPERF",
   	[0x0000064f] = "PERF_LIMIT_REASONS",
  +	[0x00000650] = "SECONDARY_TURBO_RATIO_LIMIT",
   	[0x00000658] = "PKG_WEIGHTED_CORE_C0_RES",
   	[0x00000659] = "PKG_ANY_CORE_C0_RES",
   	[0x0000065A] = "PKG_ANY_GFXE_C0_RES",
  $

Now one can trace systemwide asking to see backtraces to where those
MSRs are being read/written, see this example with a previous update:

  # perf trace -e msr:*_msr/max-stack=32/ --filter="msr>=IA32_U_CET && msr<=IA32_INT_SSP_TAB"
  ^C#

If we use -v (verbose mode) we can see what it does behind the scenes:

  # perf trace -v -e msr:*_msr/max-stack=32/ --filter="msr>=IA32_U_CET && msr<=IA32_INT_SSP_TAB"
  Using CPUID AuthenticAMD-25-21-0
  0x6a0
  0x6a8
  New filter for msr:read_msr: (msr>=0x6a0 && msr<=0x6a8) && (common_pid != 597499 && common_pid != 3313)
  0x6a0
  0x6a8
  New filter for msr:write_msr: (msr>=0x6a0 && msr<=0x6a8) && (common_pid != 597499 && common_pid != 3313)
  mmap size 528384B
  ^C#

Example with a frequent msr:

  # perf trace -v -e msr:*_msr/max-stack=32/ --filter="msr==IA32_SPEC_CTRL" --max-events 2
  Using CPUID AuthenticAMD-25-21-0
  0x48
  New filter for msr:read_msr: (msr==0x48) && (common_pid != 2612129 && common_pid != 3841)
  0x48
  New filter for msr:write_msr: (msr==0x48) && (common_pid != 2612129 && common_pid != 3841)
  mmap size 528384B
  Looking at the vmlinux_path (8 entries long)
  symsrc__init: build id mismatch for vmlinux.
  Using /proc/kcore for kernel data
  Using /proc/kallsyms for symbols
     0.000 Timer/2525383 msr:write_msr(msr: IA32_SPEC_CTRL, val: 6)
                                       do_trace_write_msr ([kernel.kallsyms])
                                       do_trace_write_msr ([kernel.kallsyms])
                                       __switch_to_xtra ([kernel.kallsyms])
                                       __switch_to ([kernel.kallsyms])
                                       __schedule ([kernel.kallsyms])
                                       schedule ([kernel.kallsyms])
                                       futex_wait_queue_me ([kernel.kallsyms])
                                       futex_wait ([kernel.kallsyms])
                                       do_futex ([kernel.kallsyms])
                                       __x64_sys_futex ([kernel.kallsyms])
                                       do_syscall_64 ([kernel.kallsyms])
                                       entry_SYSCALL_64_after_hwframe ([kernel.kallsyms])
                                       __futex_abstimed_wait_common64 (/usr/lib64/libpthread-2.33.so)
     0.030 :0/0 msr:write_msr(msr: IA32_SPEC_CTRL, val: 2)
                                       do_trace_write_msr ([kernel.kallsyms])
                                       do_trace_write_msr ([kernel.kallsyms])
                                       __switch_to_xtra ([kernel.kallsyms])
                                       __switch_to ([kernel.kallsyms])
                                       __schedule ([kernel.kallsyms])
                                       schedule_idle ([kernel.kallsyms])
                                       do_idle ([kernel.kallsyms])
                                       cpu_startup_entry ([kernel.kallsyms])
                                       secondary_startup_64_no_verify ([kernel.kallsyms])
  #

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Daniel Sneddon <daniel.sneddon@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Len Brown <len.brown@intel.com>
Cc: Like Xu <like.xu@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Hoo <robert.hu@linux.intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: https://lore.kernel.org/lkml/YvzbT24m2o5U%2F7+q@kernel.org/
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:30:33 -03:00
Arnaldo Carvalho de Melo
cf1258ac37 perf beauty: Update copy of linux/socket.h with the kernel sources
To pick the changes in:

  7fa875b8e5 ("net: copy from user before calling __copy_msghdr")
  ebe73a284f ("net: Allow custom iter handler in msghdr")
  7c701d92b2 ("skbuff: carry external ubuf_info in msghdr")
  c04245328d ("net: make __sys_accept4_file() static")

That don't result in any changes in the tables generated from that
header.

This silences this perf build warning:

  Warning: Kernel ABI header at 'tools/perf/trace/beauty/include/linux/socket.h' differs from latest version at 'include/linux/socket.h'
  diff -u tools/perf/trace/beauty/include/linux/socket.h include/linux/socket.h

Cc: David Ahern <dsahern@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dylan Yudaken <dylany@fb.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Pavel Begunkov <asml.silence@gmail.com>
Cc: Yajun Deng <yajun.deng@linux.dev>
Link: https://lore.kernel.org/lkml/YvzYs+F+Xzq8Hvvp@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:30:33 -03:00
Ian Rogers
b2f10cd4e8 perf cpumap: Fix alignment for masks in event encoding
A mask encoding of a cpu map is laid out as:

  u16 nr
  u16 long_size
  unsigned long mask[];

However, the mask may be 8-byte aligned meaning there is a 4-byte pad
after long_size. This means 32-bit and 64-bit builds see the mask as
being at different offsets. On top of this the structure is in the byte
data[] encoded as:

  u16 type
  char data[]

This means the mask's struct isn't the required 4 or 8 byte aligned, but
is offset by 2. Consequently the long reads and writes are causing
undefined behavior as the alignment is broken.

Fix the mask struct by creating explicit 32 and 64-bit variants, use a
union to avoid data[] and casts; the struct must be packed so the
layout matches the existing perf.data layout. Taking an address of a
member of a packed struct breaks alignment so pass the packed
perf_record_cpu_map_data to functions, so they can access variables with
the right alignment.

As the 64-bit version has 4 bytes of padding, optimizing writing to only
write the 32-bit version.

Committer notes:

Disable warnings about 'packed' that break the build in some arches like
riscv64, but just around that specific struct.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Bayduraev <alexey.v.bayduraev@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: German Gomez <german.gomez@arm.com>
Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Kees Kook <keescook@chromium.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20220614143353.1559597-5-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:30:28 -03:00
Linus Torvalds
963a70bee5 sound fixes for 6.0-rc2
The only significant core change is ASoC DPCM fix for asymmetric
 setup; other remaining changes are device-specific fixes, including
 the hardening of string manipulations.
 
 One change in platform/x86 is the patch I forgot to apply from a
 series for CS35L41 codec.
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Merge tag 'sound-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "The only significant core change is ASoC DPCM fix for asymmetric
  setup; other remaining changes are device-specific fixes, including
  the hardening of string manipulations.

  One change in platform/x86 is the patch I forgot to apply from a
  series for CS35L41 codec"

* tag 'sound-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (21 commits)
  ALSA: hda/realtek: Add quirk for Clevo NS50PU, NS70PU
  ALSA: info: Fix llseek return value when using callback
  ALSA: hda/cs8409: Support new Dolphin Variants
  platform/x86: serial-multi-instantiate: Add CLSA0101 Laptop
  ALSA: hda/realtek: Add quirk for Lenovo Yoga7 14IAL7
  ALSA: hda: cs35l41: Clarify support for CSC3551 without _DSD Properties
  ALSA: hda/realtek: Add quirks for ASUS Zenbooks using CS35L41
  ASoC: codec: tlv320aic32x4: fix mono playback via I2S
  ASoC: rt5640: Fix the JD voltage dropping issue
  ASoC: tas2770: Fix handling of mute/unmute
  ASoC: tas2770: Drop conflicting set_bias_level power setting
  ASoC: tas2770: Allow mono streams
  ASoC: tas2770: Set correct FSYNC polarity
  ASoC: Intel: fix sof_es8336 probe
  ASoC: DPCM: Don't pick up BE without substream
  ASoC: SOF: ipc3-topology: Fix clang -Wformat warning
  ASoC: sh: rz-ssi: Improve error handling in rz_ssi_probe() error path
  ASoC: SOF: Intel: hda: Fix potential buffer overflow by snprintf()
  ASoC: SOF: debug: Fix potential buffer overflow by snprintf()
  ASoC: Intel: avs: Fix potential buffer overflow by snprintf()
  ...
2022-08-19 09:46:11 -07:00
Linus Torvalds
adb67b373a drm fixes for 6.0-rc2
ttm:
 - NULL ptr dereference
 
 i915:
 - disable pci resize on 32-bit systems
 - don't leak the ccs state
 - TLB invalidation fixes
 
 nouveau:
 - GA103 enablement
 - off-by-one fix
 
 amdgpu:
 - Revert some DML stack changes
 - Rounding fixes in KFD allocations
 - atombios vram info table parsing fix
 - DCN 3.1.4 fixes
 - Clockgating fixes for various new IPs
 - SMU 13.0.4 fixes
 - DCN 3.1.4 FP fixes
 - TMDS fixes for YCbCr420 4k modes
 - DCN 3.2.x fixes
 - USB 4 fixes
 - SMU 13.0 fixes
 - SMU driver unload memory leak fixes
 - Display orientation fix
 - Regression fix for generic fbdev conversion
 - SDMA 6.x fixes
 - SR-IOV fixes
 - IH 6.x fixes
 - Use after free fix in bo list handling
 - Revert pipe1 support
 - XGMI hive reset fix
 
 amdkfd:
 - Fix potential crach in kfd_create_indirect_link_prop()
 
 imx:
 - warning fix
 
 meson:
 - refcounting fix
 
 lvds-codec:
 - error check fix
 
 sun4i:
 - underflow fix
 - dt-binding fix
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Merge tag 'drm-fixes-2022-08-19' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Regular weekly fixes.

  The nouveau patch just enables modesetting on GA103 hw which is like
  other ampere cards that are already supported. amdgpu has 2 weeks of
  fixes, as Alex was away, so a bit larger than usual, otherwise some
  i915 and misc other fixes.

  ttm:
   - NULL ptr dereference

  i915:
   - disable pci resize on 32-bit systems
   - don't leak the ccs state
   - TLB invalidation fixes

  nouveau:
   - GA103 enablement
   - off-by-one fix

  amdgpu:
   - Revert some DML stack changes
   - Rounding fixes in KFD allocations
   - atombios vram info table parsing fix
   - DCN 3.1.4 fixes
   - Clockgating fixes for various new IPs
   - SMU 13.0.4 fixes
   - DCN 3.1.4 FP fixes
   - TMDS fixes for YCbCr420 4k modes
   - DCN 3.2.x fixes
   - USB 4 fixes
   - SMU 13.0 fixes
   - SMU driver unload memory leak fixes
   - Display orientation fix
   - Regression fix for generic fbdev conversion
   - SDMA 6.x fixes
   - SR-IOV fixes
   - IH 6.x fixes
   - Use after free fix in bo list handling
   - Revert pipe1 support
   - XGMI hive reset fix

  amdkfd:
   - Fix potential crach in kfd_create_indirect_link_prop()

  imx:
   - warning fix

  meson:
   - refcounting fix

  lvds-codec:
   - error check fix

  sun4i:
   - underflow fix
   - dt-binding fix"

* tag 'drm-fixes-2022-08-19' of git://anongit.freedesktop.org/drm/drm: (109 commits)
  Revert "drm/amd/amdgpu: add pipe1 hardware support"
  drm/amdgpu: Fix use-after-free on amdgpu_bo_list mutex
  drm/amdgpu: Fix interrupt handling on ih_soft ring
  drm/amdgpu: Add secure display TA load for Renoir
  drm/amd/display: Include scaling factor for SubVP command
  drm/amdgpu/vcn: Return void from the stop_dbg_mode
  drm/amdgpu: remove useless condition in amdgpu_job_stop_all_jobs_on_sched()
  drm/amdgpu: Add decode_iv_ts helper for ih_v6 block
  drm/amd/display: add chip revision to DCN32
  drm/amd/display: avoid doing vm_init multiple time
  drm/amd/display: Use pitch when calculating size to cache in MALL
  drm/amd/display: Don't set DSC for phantom pipes
  drm/amd/display: Update clock table policy for DCN314
  drm/amd/display: Modify header inclusion pattern
  drm/amd/display: Fix plug/unplug external monitor will hang while playback MPO video
  drm/amd/display: Add debug parameter to retain default clock table
  drm/amdgpu: Increase tlb flush timeout for sriov
  drm/amd/display: do not compare integers of different widths
  drm/amd/display: Add reserved dc_log_type.
  drm/amd/display: Fix pixel clock programming
  ...
2022-08-19 09:39:32 -07:00
Linus Torvalds
a4ee891b7e cpumask: UP optimisation fixes follow-up
As an older version of the UP optimisation fixes was merged, not all
 review feedback has been implemented.  These patches implement the
 feedback received on the merged version [1], and the respin [2], for
 changes related to include/linux/cpumask.h and lib/cpumask.c.
 
 [1] https://lore.kernel.org/lkml/cover.1656777646.git.sander@svanheule.net/
 [2] https://lore.kernel.org/lkml/cover.1659077534.git.sander@svanheule.net/
 
 It spent for more than a week with no issues.
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Merge tag 'bitmap-6.0-rc2' of https://github.com/norov/linux

Pull bitmap updates from Yury Norov:
 "cpumask: UP optimisation fixes follow-up

  As an older version of the UP optimisation fixes was merged, not all
  review feedback has been implemented.

  This implements the feedback received on the merged version [1], and
  the respin [2], for changes related to <linux/cpumask.h> and
  lib/cpumask.c"

Link: https://lore.kernel.org/lkml/cover.1656777646.git.sander@svanheule.net/ [1]
Link: https://lore.kernel.org/lkml/cover.1659077534.git.sander@svanheule.net/ [2]

It spent for more than a week with no issues.

* tag 'bitmap-6.0-rc2' of https://github.com/norov/linux:
  lib/cpumask: drop always-true preprocessor guard
  lib/cpumask: add inline cpumask_next_wrap() for UP
  cpumask: align signatures of UP implementations
2022-08-19 09:22:31 -07:00
Ian Rogers
28526478cc perf cpumap: Compute mask size in constant time
perf_cpu_map__max() computes the cpumap's maximum value, no need to
iterate over all values.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Bayduraev <alexey.v.bayduraev@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: German Gomez <german.gomez@arm.com>
Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Kees Kook <keescook@chromium.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20220614143353.1559597-4-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 12:26:58 -03:00
Ian Rogers
35ae6f09d8 perf cpumap: Synthetic events and const/static
Make the cpumap arguments const to make it clearer they are in rather
than out arguments. Make two functions static and remove external
declarations.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Bayduraev <alexey.v.bayduraev@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: German Gomez <german.gomez@arm.com>
Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Kees Kook <keescook@chromium.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20220614143353.1559597-3-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 12:26:58 -03:00
Ian Rogers
e989bc3d0f perf cpumap: Const map for max()
Allows max() to be used with 'const struct perf_cpu_maps *'.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Bayduraev <alexey.v.bayduraev@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: German Gomez <german.gomez@arm.com>
Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Kees Kook <keescook@chromium.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20220614143353.1559597-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 12:26:58 -03:00
Aaron Lu
88e0a74902 x86/mm: Use proper mask when setting PUD mapping
Commit c164fbb40c43f("x86/mm: thread pgprot_t through
init_memory_mapping()") mistakenly used __pgprot() which doesn't respect
__default_kernel_pte_mask when setting PUD mapping.

Fix it by only setting the one bit we actually need (PSE) and leaving
the other bits (that have been properly masked) alone.

Fixes: c164fbb40c ("x86/mm: thread pgprot_t through init_memory_mapping()")
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-08-19 08:17:43 -07:00
Paolo Bonzini
959d6c4ae2 KVM/arm64 fixes for 6.0, take #1
- Fix unexpected sign extension of KVM_ARM_DEVICE_ID_MASK
 
 - Tidy-up handling of AArch32 on asymmetric systems
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Merge tag 'kvmarm-fixes-6.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 fixes for 6.0, take #1

- Fix unexpected sign extension of KVM_ARM_DEVICE_ID_MASK

- Tidy-up handling of AArch32 on asymmetric systems
2022-08-19 05:43:53 -04:00
Li kunyu
eceb6e1d53 KVM: Drop unnecessary initialization of "ops" in kvm_ioctl_create_device()
The variable is initialized but it is only used after its assignment.

Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Li kunyu <kunyu@nfschina.com>
Message-Id: <20220819021535.483702-1-kunyu@nfschina.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-08-19 04:05:43 -04:00
Li kunyu
2824913976 KVM: Drop unnecessary initialization of "npages" in hva_to_pfn_slow()
The variable is initialized but it is only used after its assignment.

Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Li kunyu <kunyu@nfschina.com>
Message-Id: <20220819022804.483914-1-kunyu@nfschina.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-08-19 04:05:43 -04:00
Josh Poimboeuf
3d9606b0e0 x86/kvm: Fix "missing ENDBR" BUG for fastop functions
The following BUG was reported:

  traps: Missing ENDBR: andw_ax_dx+0x0/0x10 [kvm]
  ------------[ cut here ]------------
  kernel BUG at arch/x86/kernel/traps.c:253!
  invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
   <TASK>
   asm_exc_control_protection+0x2b/0x30
  RIP: 0010:andw_ax_dx+0x0/0x10 [kvm]
  Code: c3 cc cc cc cc 0f 1f 44 00 00 66 0f 1f 00 48 19 d0 c3 cc cc cc
        cc 0f 1f 40 00 f3 0f 1e fa 20 d0 c3 cc cc cc cc 0f 1f 44 00 00
        <66> 0f 1f 00 66 21 d0 c3 cc cc cc cc 0f 1f 40 00 66 0f 1f 00 21
        d0

   ? andb_al_dl+0x10/0x10 [kvm]
   ? fastop+0x5d/0xa0 [kvm]
   x86_emulate_insn+0x822/0x1060 [kvm]
   x86_emulate_instruction+0x46f/0x750 [kvm]
   complete_emulated_mmio+0x216/0x2c0 [kvm]
   kvm_arch_vcpu_ioctl_run+0x604/0x650 [kvm]
   kvm_vcpu_ioctl+0x2f4/0x6b0 [kvm]
   ? wake_up_q+0xa0/0xa0

The BUG occurred because the ENDBR in the andw_ax_dx() fastop function
had been incorrectly "sealed" (converted to a NOP) by apply_ibt_endbr().

Objtool marked it to be sealed because KVM has no compile-time
references to the function.  Instead KVM calculates its address at
runtime.

Prevent objtool from annotating fastop functions as sealable by creating
throwaway dummy compile-time references to the functions.

Fixes: 6649fa876d ("x86/ibt,kvm: Add ENDBR to fastops")
Reported-by: Pengfei Xu <pengfei.xu@intel.com>
Debugged-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Message-Id: <0d4116f90e9d0c1b754bb90c585e6f0415a1c508.1660837839.git.jpoimboe@kernel.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-08-19 04:05:42 -04:00
Josh Poimboeuf
22472d1260 x86/kvm: Simplify FOP_SETCC()
SETCC_ALIGN and FOP_ALIGN are both 16.  Remove the special casing for
FOP_SETCC() and just make it a normal fastop.

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Message-Id: <7c13d94d1a775156f7e36eed30509b274a229140.1660837839.git.jpoimboe@kernel.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-08-19 04:05:42 -04:00
Josh Poimboeuf
e27e5bea95 x86/ibt, objtool: Add IBT_NOSEAL()
Add a macro which prevents a function from getting sealed if there are
no compile-time references to it.

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Message-Id: <20220818213927.e44fmxkoq4yj6ybn@treble>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-08-19 04:05:42 -04:00
Chao Peng
20ec3ebd70 KVM: Rename mmu_notifier_* to mmu_invalidate_*
The motivation of this renaming is to make these variables and related
helper functions less mmu_notifier bound and can also be used for non
mmu_notifier based page invalidation. mmu_invalidate_* was chosen to
better describe the purpose of 'invalidating' a page that those
variables are used for.

  - mmu_notifier_seq/range_start/range_end are renamed to
    mmu_invalidate_seq/range_start/range_end.

  - mmu_notifier_retry{_hva} helper functions are renamed to
    mmu_invalidate_retry{_hva}.

  - mmu_notifier_count is renamed to mmu_invalidate_in_progress to
    avoid confusion with mn_active_invalidate_count.

  - While here, also update kvm_inc/dec_notifier_count() to
    kvm_mmu_invalidate_begin/end() to match the change for
    mmu_notifier_count.

No functional change intended.

Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
Message-Id: <20220816125322.1110439-3-chao.p.peng@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-08-19 04:05:41 -04:00