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| author | Avi Kivity <avi@redhat.com> | 2009-08-27 12:37:06 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-09-10 09:46:56 +0200 |
| commit | 60f24784a92c25c269a5e741a8ce8ff63e887be8 (patch) | |
| tree | e14483c4f507bad1756b8ce82f2f73b0190b026f | |
| parent | KVM: Document KVM_CAP_IRQCHIP (diff) | |
| download | linux-60f24784a92c25c269a5e741a8ce8ff63e887be8.tar.xz linux-60f24784a92c25c269a5e741a8ce8ff63e887be8.zip | |
KVM: Optimize kvm_mmu_unprotect_page_virt() for tdp
We know no pages are protected, so we can short-circuit the whole thing
(including fairly nasty guest memory accesses).
Signed-off-by: Avi Kivity <avi@redhat.com>
| -rw-r--r-- | arch/x86/kvm/mmu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 6f38178af926..eca41ae9f453 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -2694,6 +2694,9 @@ int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva) gpa_t gpa; int r; + if (tdp_enabled) + return 0; + gpa = vcpu->arch.mmu.gva_to_gpa(vcpu, gva); spin_lock(&vcpu->kvm->mmu_lock); |