FYI, the "LLC references/misses" patch exposed a latent failure on SKX/CLX/CPL[*] (who's brilliant idea was it to use "CPL" for a CPU code name on x86?). Dapeng is following up with the uarch folks to understand what's going on. If -rc1 is immiment and we don't have a fix, my plan is to have the test only assert that the count is non-zero, and then go with a more precise fix if one arises. [*] https://lore.kernel.org/all/202501141009.30c629b4-lkp@xxxxxxxxx The following changes since commit 10b2c8a67c4b8ec15f9d07d177f63b563418e948: Merge tag 'kvm-x86-fixes-6.13-rcN' of https://github.com/kvm-x86/linux into HEAD (2024-12-22 12:59:33 -0500) are available in the Git repository at: https://github.com/kvm-x86/linux.git tags/kvm-x86-selftests-6.14 for you to fetch changes up to 983820cb53c0e796777caf85bfc2810ad0c8fb22: KVM: selftests: Add helpers for locally (un)blocking IRQs on x86 (2025-01-08 12:57:03 -0800) ---------------------------------------------------------------- KVM selftests changes for 6.14: - Misc cleanups and prep work. - Annotate _no_printf() with "printf" so that pr_debug() statements are checked by the compiler for default builds (and pr_info() when QUIET). - Attempt to whack the last LLC references/misses mole in the Intel PMU counters test by adding a data load and doing CLFLUSH{OPT} on the data instead of the code being executed. The theory is that modern Intel CPUs have learned new code prefetching tricks that bypass the PMU counters. ---------------------------------------------------------------- Chen Ni (1): KVM: selftests: Remove unneeded semicolon Colton Lewis (2): KVM: selftests: Fix typos in x86's PMU counter test's macro variable use KVM: selftests: Add defines for AMD PMU CPUID features and properties Isaku Yamahata (1): KVM: selftests: Add printf attribute to _no_printf() Sean Christopherson (2): KVM: selftests: Use data load to trigger LLC references/misses in Intel PMU KVM: selftests: Add helpers for locally (un)blocking IRQs on x86 .../selftests/kvm/access_tracking_perf_test.c | 2 +- tools/testing/selftests/kvm/include/test_util.h | 2 +- .../testing/selftests/kvm/include/x86/processor.h | 47 ++++++++++++++++++++++ tools/testing/selftests/kvm/x86/hyperv_ipi.c | 6 ++- .../testing/selftests/kvm/x86/pmu_counters_test.c | 15 +++---- tools/testing/selftests/kvm/x86/svm_int_ctl_test.c | 5 +-- .../selftests/kvm/x86/ucna_injection_test.c | 2 +- tools/testing/selftests/kvm/x86/xapic_ipi_test.c | 3 +- tools/testing/selftests/kvm/x86/xapic_state_test.c | 4 +- tools/testing/selftests/kvm/x86/xen_shinfo_test.c | 5 +-- 10 files changed, 68 insertions(+), 23 deletions(-)
