AuxXxilium/linux_dsm_epyc7002
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KVM: MMU: delay local tlb flush

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delay local tlb flush until enter guest moden, it can reduce vpid flush
frequency and reduce remote tlb flush IPI(if KVM_REQ_TLB_FLUSH bit is
already set, IPI is not sent)

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Xiao Guangrong 2010-06-08 20:07:01 +08:00 committed by Avi Kivity
parent 5304efde6a
commit 3b5d132186
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kvm/mmu.c
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@ -2364,7 +2364,7 @@ static int nonpaging_init_context(struct kvm_vcpu *vcpu)
void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu)
{
++vcpu->stat.tlb_flush;
kvm_x86_ops->tlb_flush(vcpu);
set_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests);
}
static void paging_new_cr3(struct kvm_vcpu *vcpu)