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Commit 8184dd38 authored by Avi Kivity's avatar Avi Kivity
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KVM: MMU: Allow spte.w=1 for gpte.w=0 and cr0.wp=0 only in shadow mode 



When tdp is enabled, the guest's cr0.wp shouldn't have any effect on spte
permissions.

Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 10ab25cd

arch/x86/kvm/mmu.c

+2 −1
Original line number Diff line number Diff line
@@ -1882,7 +1882,8 @@ static int set_spte(struct kvm_vcpu *vcpu, u64 *sptep, 
	spte |= (u64)pfn << PAGE_SHIFT;



	if ((pte_access & ACC_WRITE_MASK)

	    || (write_fault && !is_write_protection(vcpu) && !user_fault)) {

	    || (!tdp_enabled && write_fault && !is_write_protection(vcpu)

		&& !user_fault)) {



		if (level > PT_PAGE_TABLE_LEVEL &&

		    has_wrprotected_page(vcpu->kvm, gfn, level)) {