KVM: X86: Provide a capability to disable PAUSE intercepts

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Allow to disable pause loop exit/pause filtering on a per VM basis.

If some VMs have dedicated host CPUs, they won't be negatively affected
due to needlessly intercepted PAUSE instructions.

Thanks to Jan H. Schönherr's initial patch.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Jan H. Schönherr <jschoenh@amazon.de>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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This commit is contained in:

Wanpeng Li 2018-03-12 04:53:04 -07:00 • committed by Paolo Bonzini

parent caa057a2ca

commit b31c114b82

5 changed files with 27 additions and 7 deletions

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1

arch/x86/include/asm/kvm_host.h

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3

arch/x86/kvm/svm.c

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17

arch/x86/kvm/vmx.c

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4

arch/x86/kvm/x86.c

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9

arch/x86/kvm/x86.h

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