[1/2,rebased] KVM: MMU: Avoid dropping accessed bit while removing write access

Commit Message

Takuya Yoshikawa Dec. 5, 2010, 4:11 p.m. UTC

None

Patch

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 04c49b9..d75ba1e 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -3446,7 +3446,7 @@  void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot)
 		for (i = 0; i < PT64_ENT_PER_PAGE; ++i)
 			/* avoid RMW */
 			if (is_writable_pte(pt[i]))
-				pt[i] &= ~PT_WRITABLE_MASK;
+				update_spte(&pt[i], pt[i] & ~PT_WRITABLE_MASK);
 	}
 	kvm_flush_remote_tlbs(kvm);
 }