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Commit 93a423e7 authored by Marcelo Tosatti's avatar Marcelo Tosatti Committed by Avi Kivity
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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: default avatarMarcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent a0854600

arch/x86/kvm/paging_tmpl.h

+4 −1
Original line number Diff line number Diff line
@@ -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;