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

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Date: Fri, 19 Apr 2024 11:52:16 +0800
From: Dapeng Mi <dapeng1.mi@...ux.intel.com>
To: Sean Christopherson <seanjc@...gle.com>,
	Paolo Bonzini <pbonzini@...hat.com>,
	Jim Mattson <jmattson@...gle.com>,
	Mingwei Zhang <mizhang@...gle.com>
Cc: kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Xiong Zhang <xiong.y.zhang@...el.com>,
	Zhenyu Wang <zhenyuw@...ux.intel.com>,
	Like Xu <like.xu.linux@...il.com>,
	Jinrong Liang <cloudliang@...cent.com>,
	Dapeng Mi <dapeng1.mi@...el.com>,
	Dapeng Mi <dapeng1.mi@...ux.intel.com>
Subject: [kvm-unit-tests Patch v4 00/17] pmu test bugs fix and improvements

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