Commit 25e23432 authored Dec 21, 2008 by Avi Kivity

KVM: MMU: Don't treat a global pte as such if cr4.pge is cleared



The pte.g bit is meaningless if global pages are disabled; deferring
mmu page synchronization on these ptes will lead to the guest using stale
shadow ptes.

Fixes Vista x86 smp bootloader failure.

Signed-off-by: Avi Kivity <avi@redhat.com>

parent fe634fd4

arch/x86/kvm/mmu.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1669,6 +1669,8 @@ static int set_spte(struct kvm_vcpu vcpu, u64 shadow_pte,
		u64 mt_mask = shadow_mt_mask;
		struct kvm_mmu_page *sp = page_header(__pa(shadow_pte));

		if (!(vcpu->arch.cr4 & X86_CR4_PGE))
		global = 0;
		if (!global && sp->global) {
		sp->global = 0;
		if (sp->unsync) {