As of now it doesn't consider cgroups when collecting shadow stats and
metrics so counter values from different cgroups will be saved in a same
slot.  This resulted in incorrect numbers when those cgroups have
different workloads.

For example, let's look at the scenario below: cgroups A and C runs same
workload which burns a cpu while cgroup B runs a light workload.

  $ perf stat -a -e cycles,instructions --for-each-cgroup A,B,C  sleep 1

   Performance counter stats for 'system wide':

     3,958,116,522      cycles                A
     6,722,650,929      instructions          A #    2.53  insn per cycle
         1,132,741      cycles                B
           571,743      instructions          B #    0.00  insn per cycle
     4,007,799,935      cycles                C
     6,793,181,523      instructions          C #    2.56  insn per cycle

       1.001050869 seconds time elapsed

When I run 'perf stat' with single workload, it usually shows IPC around
1.7.  We can verify it (6,722,650,929.0 / 3,958,116,522 = 1.698) for cgroup A.

But in this case, since cgroups are ignored, cycles are averaged so it
used the lower value for IPC calculation and resulted in around 2.5.

  avg cycle: (3958116522 + 1132741 + 4007799935) / 3 = 2655683066
  IPC (A)  :  6722650929 / 2655683066 = 2.531
  IPC (B)  :      571743 / 2655683066 = 0.0002
  IPC (C)  :  6793181523 / 2655683066 = 2.557

We can simply compare cgroup pointers in the evsel and it'll be NULL
when cgroups are not specified.  With this patch, I can see correct
numbers like below:

  $ perf stat -a -e cycles,instructions --for-each-cgroup A,B,C  sleep 1

  Performance counter stats for 'system wide':

     4,171,051,687      cycles                A
     7,219,793,922      instructions          A #    1.73  insn per cycle
         1,051,189      cycles                B
           583,102      instructions          B #    0.55  insn per cycle
     4,171,124,710      cycles                C
     7,192,944,580      instructions          C #    1.72  insn per cycle

       1.007909814 seconds time elapsed
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210115071139.257042-2-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

To pass more info to the saved_value in the runtime_stat, add a new
struct runtime_stat_data.  Currently it only has 'ctx' field but later
patch will add more.

Note that we intentionally pass 0 as ctx to clock-related events for
compatibility.  It was already there in a few places.  So move the code
into the saved_value_lookup() explicitly and add a comment.
Suggested-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210115071139.257042-1-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Permissions are necessary to get a tracepoint id. Fail the test when the
read fails.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210114180250.3853825-2-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

If a test fails return -1 rather than 0. This is consistent with the
return value in test-cpumap.c
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210114180250.3853825-1-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

The variable 'bf' is read (for a write call) without being initialized
triggering a memory sanitizer warning. Use 'bf' in the read and switch
the write to reading from a string.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210114212304.4018119-1-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

It was using some bash-specific features and failed to parse when
running with a different shell like below:

  root@kbl-ppc:~/kbl-ws/perf-dev/lck-9077/acme.tmp/tools/perf# ./perf test 83 -vv
  83: perf stat metrics (shadow stat) test                            :
  --- start ---
  test child forked, pid 3922
  ./tests/shell/stat+shadow_stat.sh: 19: ./tests/shell/stat+shadow_stat.sh: [[: not found
  ./tests/shell/stat+shadow_stat.sh: 24: ./tests/shell/stat+shadow_stat.sh: [[: not found
  ./tests/shell/stat+shadow_stat.sh: 30: ./tests/shell/stat+shadow_stat.sh: [[: not found
  (standard_in) 2: syntax error
  ./tests/shell/stat+shadow_stat.sh: 36: ./tests/shell/stat+shadow_stat.sh: [[: not found
  ./tests/shell/stat+shadow_stat.sh: 19: ./tests/shell/stat+shadow_stat.sh: [[: not found
  ./tests/shell/stat+shadow_stat.sh: 24: ./tests/shell/stat+shadow_stat.sh: [[: not found
  ./tests/shell/stat+shadow_stat.sh: 30: ./tests/shell/stat+shadow_stat.sh: [[: not found
  (standard_in) 2: syntax error
  ./tests/shell/stat+shadow_stat.sh: 36: ./tests/shell/stat+shadow_stat.sh: [[: not found
  ./tests/shell/stat+shadow_stat.sh: 45: ./tests/shell/stat+shadow_stat.sh: declare: not found
  test child finished with -1
  ---- end ----
  perf stat metrics (shadow stat) test: FAILED!
Reported-by: Jin Yao <yao.jin@linux.intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Laight <david.laight@aculab.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210114050609.1258820-1-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

To pick up the changes in:

  3a176b94 ("Revert "kbuild: avoid static_assert for genksyms"")

And silence this perf build warning:

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

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

To pick the changes in:

  647daca2 ("KVM: SVM: Add support for booting APs in an SEV-ES guest")

That don't cause any tooling change, just 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: 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: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

It was looking at bpf/bpf.h, which caused this problem:

  # perf trace -e tools/perf/examples/bpf/5sec.c
  /home/acme/git/perf/tools/perf/examples/bpf/5sec.c:42:10: fatal error: 'bpf/bpf.h' file not found
  #include <bpf/bpf.h>
           ^~~~~~~~~~~
  1 error generated.
  ERROR:	unable to compile tools/perf/examples/bpf/5sec.c
  Hint:	Check error message shown above.
  Hint:	You can also pre-compile it into .o using:
       		clang -target bpf -O2 -c tools/perf/examples/bpf/5sec.c
       	with proper -I and -D options.
  event syntax error: 'tools/perf/examples/bpf/5sec.c'
                       \___ Failed to load tools/perf/examples/bpf/5sec.c from source: Error when compiling BPF scriptlet
  #

Change that to plain bpf.h, to make it work again:

  # perf trace -e tools/perf/examples/bpf/5sec.c sleep 5s
       0.000 perf_bpf_probe:hrtimer_nanosleep(__probe_ip: -1776891872, rqtp: 5000000000)
  # perf trace -e tools/perf/examples/bpf/5sec.c/max-stack=16/ sleep 5s
       0.000 perf_bpf_probe:hrtimer_nanosleep(__probe_ip: -1776891872, rqtp: 5000000000)
                                         hrtimer_nanosleep ([kernel.kallsyms])
                                         common_nsleep ([kernel.kallsyms])
                                         __x64_sys_clock_nanosleep ([kernel.kallsyms])
                                         do_syscall_64 ([kernel.kallsyms])
                                         entry_SYSCALL_64_after_hwframe ([kernel.kallsyms])
                                         __clock_nanosleep_2 (/usr/lib64/libc-2.32.so)
  # perf trace -e tools/perf/examples/bpf/5sec.c sleep 4s
  #

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>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Pull ACPI fixes from Rafael Wysocki:
 "These address a device ID bounds check error in the device enumeration
  code and fix a mistake in the documentation.

  Specifics:

   - Harden the ACPI device enumeration code against device ID length
     overflows to address a Linux VM cash on Hyper-V (Dexuan Cui).

   - Fix a mistake in the documentation of error type values for PCIe
     errors (Qiuxu Zhuo)"

* tag 'acpi-5.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  Documentation: ACPI: EINJ: Fix error type values for PCIe errors
  ACPI: scan: Harden acpi_device_add() against device ID overflows

Pull xen fixes from Juergen Gross:

 - A series to fix a regression when running as a fully virtualized
   guest on an old Xen hypervisor not supporting PV interrupt callbacks
   for HVM guests.

 - A patch to add support to query Xen resource sizes (setting was
   possible already) from user mode.

* tag 'for-linus-5.11-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  x86/xen: Fix xen_hvm_smp_init() when vector callback not available
  x86/xen: Don't register Xen IPIs when they aren't going to be used
  x86/xen: Add xen_no_vector_callback option to test PCI INTX delivery
  xen: Set platform PCI device INTX affinity to CPU0
  xen: Fix event channel callback via INTX/GSI
  xen/privcmd: allow fetching resource sizes

Pull iommu fixes from Will Deacon:
 "Three IOMMU fixes for -rc4.

  The main one is a change to the Intel IOMMU driver to fix the handling
  of unaligned addresses when invalidating the TLB.

  The fix itself is a bit ugly (the caller does a bunch of shifting
  which is then effectively undone later in the callchain), but Lu has
  patches to clean all of this up in 5.12.

  Summary:

   - Fix address alignment handling for VT-D TLB invalidation

   - Enable workarounds for buggy Qualcomm firmware on two more SoCs

   - Drop duplicate #include"

* tag 'iommu-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  iommu/vt-d: Fix duplicate included linux/dma-map-ops.h
  iommu: arm-smmu-qcom: Add sdm630/msm8998 compatibles for qcom quirks
  iommu/vt-d: Fix unaligned addresses for intel_flush_svm_range_dev()

Pull drm nouveau ampere display support from Dave Airlie:
 "Ben has requested if we can include Ampere modesetting support under
  fixes, it's for new GPUs and shouldn't affect existing hardware.

  It's a bit bigger than just adding a PCI ID, but It has no effect on
  older GPUs"

* tag 'topic/nouveau-ampere-modeset-2021-01-15' of git://anongit.freedesktop.org/drm/drm:
  drm/nouveau/disp/ga10[24]: initial support
  drm/nouveau/dmaobj/ga10[24]: initial support
  drm/nouveau/i2c/ga10[024]: initial support
  drm/nouveau/gpio/ga10[024]: initial support
  drm/nouveau/bar/ga10[024]: initial support
  drm/nouveau/mmu/ga10[024]: initial support
  drm/nouveau/timer/ga10[024]: initial support
  drm/nouveau/fb/ga10[024]: initial support
  drm/nouveau/imem/ga10[024]: initial support
  drm/nouveau/privring/ga10[024]: initial support
  drm/nouveau/mc/ga10[024]: initial support
  drm/nouveau/devinit/ga10[024]: initial support
  drm/nouveau/bios/ga10[024]: initial support
  drm/nouveau/pci/ga10[024]: initial support
  drm/nouveau/core: recognise GA10[024]

* acpi-docs:
  Documentation: ACPI: EINJ: Fix error type values for PCIe errors

Merge branch '04.01-ampere-lite' of git://github.com/skeggsb/linux into topic/nouveau-ampere-modeset

This adds support for basic modeseting on the nvidia ampere chipsets. This code should all
be contained to just those and have no effect on current hardware.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Ben Skeggs <skeggsb@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CACAvsv5LmMP+HbDUQBf_dy1-0eS9fA32k8HWo4y5X4-7rsw-yw@mail.gmail.com

Pull drm fixes from Dave Airlie:
 "Regular fixes for rc4, a bunch of fixes across i915, amdgpu and
  nouveau here, along with a couple of TTM fixes, and dma-buf and one
  core pageflip/modifier interaction fix.

  One notable i915 fix is a HSW GT1 regression fix that has been
  outstanding for quite a while. (Thanks to Matt Turner for kicking
  Intel into getting it fixed).

  dma-buf:
   - Fix a memory leak in CMAV heap

  core:
   - Fix format check for legacy pageflips

  ttm:
   - Pass correct address to dma_mapping_error()
   - Use mutex in pool shrinker

  i915:
   - Allow the sysadmin to override security mitigations
   - Restore clear-residual mitigations for ivb/byt
   - Limit VFE threads based on GT
   - GVT: fix vfio edid and full display detection
   - Fix DSI DSC power refcounting
   - Fix LPT CPU mode backlight takeover
   - Disable RPM wakeref assertions during driver shutdown
   - Fix DSI sequence sleeps

  amdgpu:
   - Update repo location in MAINTAINERS
   - Add some new renoir PCI IDs
   - Revert CRC UAPI changes
   - Revert OLED display fix which cases clocking problems for some systems
   - Misc vangogh fixes
   - GFX fix for sienna cichlid
   - DCN1.0 fix for pipe split
   - Fix incorrect PSP command

  amdkfd:
   - Fix possible out of bounds read in vcrat creation

  nouveau:
   - irq handling fix
   - expansion ROM fix
   - hw init dpcd disable
   - aux semaphore owner field fix
   - vram heap sizing fix
   - notifier at 0 is valid fix"

* tag 'drm-fixes-2021-01-15' of git://anongit.freedesktop.org/drm/drm: (37 commits)
  drm/nouveau/kms/nv50-: fix case where notifier buffer is at offset 0
  drm/nouveau/mmu: fix vram heap sizing
  drm/nouveau/i2c/gm200: increase width of aux semaphore owner fields
  drm/nouveau/i2c/gk110-: disable hw-initiated dpcd reads
  drm/nouveau/i2c/gk110: split out from i2c/gk104
  drm/nouveau/privring: ack interrupts the same way as RM
  drm/nouveau/bios: fix issue shadowing expansion ROMs
  drm/amd/display: Fix to be able to stop crc calculation
  Revert "drm/amd/display: Expose new CRC window property"
  Revert "drm/amdgpu/disply: fix documentation warnings in display manager"
  Revert "drm/amd/display: Fix unused variable warning"
  drm/amdgpu: set power brake sequence
  drm/amdgpu: add new device id for Renior
  drm/amdgpu: add green_sardine device id (v2)
  drm/amdgpu: fix vram type and bandwidth error for DDR5 and DDR4
  drm/amdgpu/gfx10: add updated GOLDEN_TSC_COUNT_UPPER/LOWER register offsets for VGH
  drm/amdkfd: Fix out-of-bounds read in kdf_create_vcrat_image_cpu()
  Revert "drm/amd/display: Fixed Intermittent blue screen on OLED panel"
  drm/amd/display: disable dcn10 pipe split by default
  drm/amd/display: Add a missing DCN3.01 API mapping
  ...

Pull bootconfig fix from Steven Rostedt:
 "Update bootconf scripts for tracing_on option

  The tracing_on option is supported by bootconfig entries, but the
  scripts to convert from ftrace to a bootconfig and back were not
  updated"

* tag 'trace-v5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tools/bootconfig: Add tracing_on support to helper scripts

As requested, here's a tree with the non-Ampere-specific fixes split
out, as most of them are potentially relevant to already-supported
GPUs.

- irq handling fix
- expansion ROM fix
- hw init dpcd disable
- aux semaphore owner field fix
- vram heap sizing fix
- notifier at 0 is valid fix
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Ben Skeggs <skeggsb@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CACAvsv4P90mcF_ByAh+ghz+ZVD2N2bPbD7xHYYArE1kYrvsGcQ@mail.gmail.com

Merge tag 'amd-drm-fixes-5.11-2021-01-14' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amd-drm-fixes-5.11-2021-01-14:

amdgpu:
- Update repo location in MAINTAINERS
- Add some new renoir PCI IDs
- Revert CRC UAPI changes
- Revert OLED display fix which cases clocking problems for some systems
- Misc vangogh fixes
- GFX fix for sienna cichlid
- DCN1.0 fix for pipe split
- Fix incorrect PSP command

amdkfd:
- Fix possible out of bounds read in vcrat creation
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210114201354.3998-1-alexander.deucher@amd.com

Merge tag 'drm-intel-fixes-2021-01-14' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

drm/i915 fixes for v5.11-rc4:
- Allow the sysadmin to override security mitigations
- Restore clear-residual mitigations for ivb/byt
- Limit VFE threads based on GT
- GVT: fix vfio edid and full display detection
- Fix DSI DSC power refcounting
- Fix LPT CPU mode backlight takeover
- Disable RPM wakeref assertions during driver shutdown
- Fix DSI sequence sleeps
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87sg73pz42.fsf@intel.com

UEFI/RM no longer use IED scripts from the VBIOS, though they appear to
have been updated for use by the x86 VBIOS code, so we should be able to
continue using them for the moment.

Unfortunately, we require some hacks to do so, as the BeforeLinkTraining
IED script became a pointer to an array of scripts instead, without a
revbump of the relevant tables.

There's also some changes to SOR clock divider fiddling, which are
hopefully correct enough that things work as they should.

AFAIK, GA100 shouldn't have display, so it hasn't been added.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Appears to be compatible with GV100 code, and not required on GA100, as
it shouldn't have display.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Appears to be compatible with GM200 code.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

GA100 appears to be compatible with GK104 code, the others have some
register moves.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Appears to be compatible with TU102 code.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Appears to be compatible with TU102 code.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Appears to be compatible with GK20A code.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

No VPR scrub.  GA102 and GA104 have a new VRAM size detection method.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Appears to be compatible with NV50 code.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Appears to be compatible with GM200 code.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Fortunately, all the interrupts we need to bring up basic display support
are contained in a single leaf register, allowing this basic (but hackish)
implementation.

There's a bunch more invasive patches to come implementing all this in a
better/more complete way, but trying to get a minimal series out first.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

VPLL regs changed a bit.  There's more stuff to do around these, but it's
less invasive to stick those changes into disp for now.

None of that belongs here anymore anyhow - fix that someday.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Forcing PRAMIN-shadowing off for GA100, as it requires display, and we don't
know if/where the fuse register for detecting its presence is.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Appears to be compatible with GP100 code.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

VRAM offset 0 is a valid address, triggered on GA102.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

GA100 hidden behind a module option, as it's not been as well verified
since initial bring-up and may need additional changes.

There's no display anyway, so this can wait for a bit.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Noticed while debugging GA102.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

RM does this around transactions, and it seemed to help while debugging
AUXCH issues on GA102.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

No functional changes here yet.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>