From 93a423e7045cf3cf69f960ff307edda1afcd7b41 Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Tue, 23 Sep 2008 13:18:29 -0300 Subject: [PATCH] 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 Signed-off-by: Avi Kivity --- arch/x86/kvm/paging_tmpl.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 6dd08e096e2..e9fbaa44d44 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; -- 2.41.1