linux-kernel - [PATCH 0/2] KVM: selftests: Fix PMU counters test flakiness

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date: Thu, 27 Jun 2024 17:55:55 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Sean Christopherson <seanjc@...gle.com>, Paolo Bonzini <pbonzini@...hat.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Maxim Levitsky <mlevitsk@...hat.com>
Subject: [PATCH 0/2] KVM: selftests: Fix PMU counters test flakiness

v2 of Maxim's patch to fix the flakiness with the PMU counters test do to
a single CLFLUSH not guaranteeing an LLC miss.

v2:
 - Add a prep patch to tweak the macros in preparation for moving CLFUSH{,OPT}
   into the loop.
 - Keep the MFENCE (because paranoia doesn't hurt in this case).

v1: https://lore.kernel.org/all/20240621204305.1730677-1-mlevitsk@redhat.com

Maxim Levitsky (1):
  KVM: selftests: Increase robustness of LLC cache misses in PMU
    counters test

Sean Christopherson (1):
  KVM: selftests: Rework macros in PMU counters test to prep for
    multi-insn loop

 .../selftests/kvm/x86_64/pmu_counters_test.c  | 44 ++++++++++++-------
 1 file changed, 29 insertions(+), 15 deletions(-)


base-commit: c81b138d5075c6f5ba3419ac1d2a2e7047719c14
-- 
2.45.2.803.g4e1b14247a-goog