KVM: X86: Don't use PV TLB flush with dedicated physical CPUs

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vCPUs are very unlikely to get preempted when they are the only task
running on a CPU.  PV TLB flush is slower that the native flush in that
case, so disable it.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

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Wanpeng Li 2018-02-13 09:05:42 +08:00 • committed by Radim Krčmář

parent b2798ba0b8

commit 6beacf74c2

1 changed files with 2 additions and 0 deletions

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arch/x86/kernel/kvm.c

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