[kvm-unit-tests patch v6 00/18] pmu test bugs fix and improvements

Dapeng Mi
2024-09-14T07:01:10Z

Changes:
v5 -> v6:
* limit maximum fixed counters number to
MIN(pmu.nr_fixed_counters, ARRAY_SIZE(fixed_events)) to avoid
out-of-bound access for fixed_events[]. If supported fixed counters
number is larger than array size of fixed_events[], print message to
remind to update test case. (Jim)
* limit instructions & branches events precise validation for only
Intel processors. (Sandipan Das)

KUT/pmu test passes on Intel Sapphire Rapids platform.

History:
v5: https://lore.kernel.org/all/20240703095712.64202-1-dapeng1.mi@linux.intel.com/
v4: https://lore.kernel.org/all/20240419035233.3837621-1-dapeng1.mi@linux.intel.com/
v3: https://lore.kernel.org/lkml/20240103031409.2504051-1-dapeng1.mi@linux.intel.com/
v2: https://lore.kernel.org/lkml/20231031092921.2885109-1-dapeng1.mi@linux.intel.com/
v1: https://lore.kernel.org/lkml/20231024075748.1675382-1-dapeng1.mi@linux.intel.com/

Dapeng Mi (17):
x86: pmu: Remove blank line and redundant space
x86: pmu: Refine fixed_events[] names
x86: pmu: Fix the issue that pmu_counter_t.config crosses cache line
x86: pmu: Enlarge cnt[] length to 48 in check_counters_many()
x86: pmu: Print measured event count if test fails
x86: pmu: Fix potential out of bound access for fixed events
x86: pmu: Fix cycles event validation failure
x86: pmu: Use macro to replace hard-coded branches event index
x86: pmu: Use macro to replace hard-coded ref-cycles event index
x86: pmu: Use macro to replace hard-coded instructions event index
x86: pmu: Enable and disable PMCs in loop() asm blob
x86: pmu: Improve instruction and branches events verification
x86: pmu: Improve LLC misses event verification
x86: pmu: Adjust lower boundary of llc-misses event to 0 for legacy
CPUs
x86: pmu: Add IBPB indirect jump asm blob
x86: pmu: Adjust lower boundary of branch-misses event
x86: pmu: Optimize emulated instruction validation

Xiong Zhang (1):
x86: pmu: Remove duplicate code in pmu_init()

lib/x86/pmu.c | 5 -
x86/pmu.c | 427 ++++++++++++++++++++++++++++++++++++++++----------
2 files changed, 346 insertions(+), 86 deletions(-)

base-commit: 17f6f2fd17935eb5e564f621c71244b4a3ddeafb
--
2.40.1