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Reply-To: Sean Christopherson <seanjc@google.com>
Date:   Fri, 13 Oct 2023 16:48:07 -0700
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Message-ID: <20231013234808.1115781-1-seanjc@google.com>
Subject: [GIT PULL] KVM: x86: PMU fixes for 6.6
From:   Sean Christopherson <seanjc@google.com>
To:     Paolo Bonzini <pbonzini@redhat.com>
Cc:     kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
        Sean Christopherson <seanjc@google.com>
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Please pull three PMU fixes for 6.6.  These aren't super urgent and have all
existed from some time, i.e. don't absolutely need to go into 6.6, but I also
don't see a good reason to hold them back (they're all tagged for stable, so
it's kind of a moot point).

The following changes since commit 5804c19b80bf625c6a9925317f845e497434d6d3:

  Merge tag 'kvm-riscv-fixes-6.6-1' of https://github.com/kvm-riscv/linux into HEAD (2023-09-23 05:35:55 -0400)

are available in the Git repository at:

  https://github.com/kvm-x86/linux.git tags/kvm-x86-pmu-6.6-fixes

for you to fetch changes up to 73554b29bd70546c1a9efc9c160641ef1b849358:

  KVM: x86/pmu: Synthesize at most one PMI per VM-exit (2023-09-25 14:42:52 -0700)

----------------------------------------------------------------
KVM x86/pmu fixes for 6.6:

 - Truncate writes to PMU counters to the counter's width to avoid spurious
   overflows when emulating counter events in software.

 - Set the LVTPC entry mask bit when handling a PMI (to match Intel-defined
   architectural behavior).

 - Treat KVM_REQ_PMI as a wake event instead of queueing host IRQ work to
   kick the guest out of emulated halt.

----------------------------------------------------------------
Jim Mattson (2):
      KVM: x86: Mask LVTPC when handling a PMI
      KVM: x86/pmu: Synthesize at most one PMI per VM-exit

Roman Kagan (1):
      KVM: x86/pmu: Truncate counter value to allowed width on write

 arch/x86/include/asm/kvm_host.h |  1 -
 arch/x86/kvm/lapic.c            |  8 ++++++--
 arch/x86/kvm/pmu.c              | 27 +--------------------------
 arch/x86/kvm/pmu.h              |  6 ++++++
 arch/x86/kvm/svm/pmu.c          |  2 +-
 arch/x86/kvm/vmx/pmu_intel.c    |  4 ++--
 arch/x86/kvm/x86.c              |  3 +++
 7 files changed, 19 insertions(+), 32 deletions(-)