[patch 13/48] KVM: MMU: Fix setting the accessed bit on non-speculative sptes

[Greg KH]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------
From: Avi Kivity <avi@xxxxxxxxxxxx>

(cherry picked from commit 3201b5d9f0f7ef392886cd76dcd2c69186d9d5cd)

The accessed bit was accidentally turned on in a random flag word, rather
than, the spte itself, which was lucky, since it used the non-EPT compatible
PT_ACCESSED_MASK.

Fix by turning the bit on in the spte and changing it to use the portable
accessed mask.

Signed-off-by: Avi Kivity <avi@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
 arch/x86/kvm/mmu.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1162,7 +1162,7 @@ static void mmu_set_spte(struct kvm_vcpu
 	 */
 	spte = shadow_base_present_pte | shadow_dirty_mask;
 	if (!speculative)
-		pte_access |= PT_ACCESSED_MASK;
+		spte |= shadow_accessed_mask;
 	if (!dirty)
 		pte_access &= ~ACC_WRITE_MASK;
 	if (pte_access & ACC_EXEC_MASK)


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