[kvm-unit-tests Patch v4 00/17] pmu test bugs fix and improvements

Dapeng Mi
2024-04-19T03:45:34Z

Changes:
v3 -> v4:
* Fix the new found issue that pmu_counter_t.config crosses cache
lines (patch 04)
* Fix the cycles event false positive by introducing a warm-up phase
instead of switching cycles events order in v3 (patch 07)
* Use macro to replace hard-coded events index (Mingwei)(patches 08~10)
* Simply the asm code to enable/disable GLOBAL_CTRL MSR in whole asm
blob (patch 11)
* Handle legacy CPUs without clflush/clflushopt/IBPB support
(patches 14, 16)
* Optimize emulated instruction validation (patch 17)

All changes pass validation on Intel Sapphire Rapids and Emerald Rapids
platforms against latest kvm-x86/next code (2d181d84af38). No tests on
AMD platforms since no AMD platform on hand. Any tests on AMD platform
are appreciated.

History:
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 (16):
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: Add asserts to warn inconsistent fixed events and counters
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 | 386 ++++++++++++++++++++++++++++++++++++++++----------
2 files changed, 308 insertions(+), 83 deletions(-)

base-commit: e96011b32944b1ecca5967674ae243067588d1e7
--
2.34.1