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KVM: MMU: prepopulate the shadow on invlpg

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If the guest executes invlpg, peek into the pagetable and attempt to
prepopulate the shadow entry.

Also stop dirty fault updates from interfering with the fork detector.

2% improvement on RHEL3/AIM7.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Marcelo Tosatti
2008-12-01 22:32:05 -02:00
committed by Avi Kivity
parent 6cffe8ca4a
commit ad218f85e3
4 changed files with 40 additions and 15 deletions
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2
arch/x86/kvm/x86.c
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@@ -2046,7 +2046,7 @@ int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
ret = kvm_write_guest(vcpu->kvm, gpa, val, bytes);
if (ret < 0)
return 0;
kvm_mmu_pte_write(vcpu, gpa, val, bytes);
kvm_mmu_pte_write(vcpu, gpa, val, bytes, 1);
return 1;
}