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authorMarcelo Tosatti <mtosatti@redhat.com>2008-09-23 13:18:29 -0300
committerAvi Kivity <avi@redhat.com>2008-10-15 14:25:15 +0200
commit93a423e7045cf3cf69f960ff307edda1afcd7b41 (patch)
tree05271993d2e6be3668c4b865559d7ded709a52f0 /arch/x86/kvm
parenta08546001c2b0f584ffc81987340943a7d6d6acb (diff)
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KVM: MMU: flush remote TLBs on large->normal entry overwrite
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>
Diffstat (limited to 'arch/x86/kvm')
-rw-r--r--arch/x86/kvm/paging_tmpl.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index 6dd08e096e24..e9fbaa44d444 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -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;