linux-kernel - [PATCH v2 0/2] KVM: x86: Fix MSR_IA32_PERF_CAPABILITIES writes check and vmx_pmu_msrs

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Date:   Thu, 16 Dec 2021 17:52:11 +0100
From:   Vitaly Kuznetsov <vkuznets@...hat.com>
To:     kvm@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <seanjc@...gle.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>, oliver.sang@...el.com,
        Like Xu <like.xu@...ux.intel.com>, linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/2] KVM: x86: Fix MSR_IA32_PERF_CAPABILITIES writes check and vmx_pmu_msrs_test

This is a continuation of "KVM: selftests: Avoid KVM_SET_CPUID2 after 
KVM_RUN in vmx_pmu_msrs_test" work. Instead of fixing the immediate issue,
drop incorrect check in KVM which was making the result of host initiated
writes to MSR_IA32_PERF_CAPABILITIES dependent on guest visible CPUIDs and
the corresponding tests in vmx_pmu_msrs_test, this will also make the issue
reported by kernel test robot to go away.

Vitaly Kuznetsov (2):
  KVM: selftests: vmx_pmu_msrs_test: Drop tests mangling guest visible
    CPUIDs
  KVM: x86: Drop guest CPUID check for host initiated writes to
    MSR_IA32_PERF_CAPABILITIES

 arch/x86/kvm/x86.c                              |  2 +-
 .../selftests/kvm/x86_64/vmx_pmu_msrs_test.c    | 17 -----------------
 2 files changed, 1 insertion(+), 18 deletions(-)

-- 
2.33.1