AcoSail/kernel_optimize_test
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KVM: MMU: flush remote TLBs on large->normal entry overwrite

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It is necessary to flush all TLB's when a large spte entry is
overwritten with a normal page directory pointer.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Marcelo Tosatti 2008-09-23 13:18:29 -03:00 committed by Avi Kivity
parent a08546001c
commit 93a423e704
1 changed files with 4 additions and 1 deletions
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arch/x86/kvm/paging_tmpl.h
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@ -310,8 +310,11 @@ static int FNAME(shadow_walk_entry)(struct kvm_shadow_walk *_sw,
if (is_shadow_present_pte(*sptep) && !is_large_pte(*sptep))
return 0;
if (is_large_pte(*sptep))
if (is_large_pte(*sptep)) {
set_shadow_pte(sptep, shadow_trap_nonpresent_pte);
kvm_flush_remote_tlbs(vcpu->kvm);
rmap_remove(vcpu->kvm, sptep);
}
if (level == PT_DIRECTORY_LEVEL && gw->level == PT_DIRECTORY_LEVEL) {
metaphysical = 1;