Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-11 14:42:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

KVM: Optimize kvm_mmu_unprotect_page_virt() for tdp

Browse Source 
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>
This commit is contained in:
Avi Kivity 2009-08-27 13:37:06 +03:00
parent 5dadbfd647
commit 60f24784a9
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/x86/kvm/mmu.c
View File

@ -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);