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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2008-09-23 13:18:29 -0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2008-10-15 14:25:15 +0200 |
| commit | 93a423e7045cf3cf69f960ff307edda1afcd7b41 (patch) | |
| tree | 05271993d2e6be3668c4b865559d7ded709a52f0 /arch/x86 | |
| parent | a08546001c2b0f584ffc81987340943a7d6d6acb (diff) | |
| download | linux-93a423e7045cf3cf69f960ff307edda1afcd7b41.tar.gz linux-93a423e7045cf3cf69f960ff307edda1afcd7b41.tar.bz2 linux-93a423e7045cf3cf69f960ff307edda1afcd7b41.zip | |
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')
| -rw-r--r-- | arch/x86/kvm/paging_tmpl.h | 5 |
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; |