KVM: vmx/pmu: Reduce the overhead of LBR pass-through or cancellation

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When the LBR records msrs has already been pass-through, there is no
need to call vmx_update_intercept_for_lbr_msrs() again and again, and
vice versa.

Signed-off-by: Like Xu <like.xu@linux.intel.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Message-Id: <20210201051039.255478-8-like.xu@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Like Xu 2021-02-01 13:10:35 +08:00 • committed by Paolo Bonzini

parent 1b5ac3226a

commit 9254beaafd

2 changed files with 16 additions and 0 deletions

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13

arch/x86/kvm/vmx/pmu_intel.c

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3

arch/x86/kvm/vmx/vmx.h

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