[Bug 216923] New: kvm-unit-test pmu_pebs is skipped on SPR

[Bug 216923] New: kvm-unit-test pmu_pebs is skipped on SPR

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=216923

            Bug ID: 216923
           Summary: kvm-unit-test pmu_pebs is skipped on SPR
           Product: Virtualization
           Version: unspecified
    Kernel Version: 6.1
          Hardware: Intel
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: kvm
          Assignee: virtualization_kvm@kernel-bugs.osdl.org
          Reporter: lixiao.yang@intel.com
        Regression: No

Environment:
Platform: Intel(R) Xeon(R) Platinum 8487C (Sapphire Rapids)
CPU Architecture: x86_64
Host OS: Red Hat Enterprise Linux 9 (Ootpa)
Host kernel: Linux 6.1 release
gcc: gcc (GCC) 11.2.1 20220127 (Red Hat 11.2.1-9)
Host kernel source:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Branch: master
Commit: 830b3c68

Qemu source: https://git.qemu.org/git/qemu.git
Branch: master
Commit: 5204b499

kvm-unit-tests source: https://gitlab.com/kvm-unit-tests/kvm-unit-tests.git
Branch: master
Commit: 7cefda524604fe1138333315ce06224d4d864dab

Bug Detailed Description:
kvm-unit-test pmu_pebs is skipped on the linux 6.1 release kernel on Sapphire
Rapids. PEBS should be supported on SPR. However, the kvm-unit-test pmu_pebs is
skipped on SPR with linux 6.1 release kernel. In addition, kvm-unit-test
pmu_pebs can pass on Ice Lake rather than being skipped. 


Reproducing Steps:

git clone https://gitlab.com/kvm-unit-tests/kvm-unit-tests.git
cd kvm-unit-tests
./configure
make standalone
cd tests
./pmu_pebs

Actual Result:
BUILD_HEAD=7cefda52
timeout -k 1s --foreground 90s /usr/local/bin/qemu-system-x86_64 --no-reboot
-nodefaults -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4
-vnc none -serial stdio -device pci-testdev -machine accel=kvm -kernel
/tmp/tmp.6qzCjJnrIy -smp 1 -cpu host,migratable=no # -initrd
/tmp/tmp.yEVIxAWSsB
enabling apic
smp: waiting for 0 APs
paging enabled
cr0 = 80010011
cr3 = 1007000
cr4 = 20
PMU version: 2
SKIP: PEBS not enumerated in PERF_CAPABILITIES
SUMMARY: 1 tests, 1 skipped
SKIP pmu_pebs (1 tests, 1 skipped)


Expected Result:
pmu_pebs successfully executed

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[Bug 216923] kvm-unit-test pmu_pebs is skipped on SPR

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=216923

Like Xu (like.xu.linux@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |like.xu.linux@gmail.com

--- Comment #1 from Like Xu (like.xu.linux@gmail.com) ---
The guest PEBS support for Intel SPR are not merged.
20221109082802.27543-1-likexu@tencent.com

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[Bug 216923] kvm-unit-test pmu_pebs is skipped on SPR

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=216923

--- Comment #2 from Yang Lixiao (lixiao.yang@intel.com) ---
(In reply to Like Xu from comment #1)
> The guest PEBS support for Intel SPR are not merged.
> 20221109082802.27543-1-likexu@tencent.com

Thanks for the information! I'll test it after it's merged.

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