Commit 439e218a authored Jun 10, 2009 by Avi Kivity

KVM: MMU: Fix is_dirty_pte()



is_dirty_pte() is used on guest ptes, not shadow ptes, so it needs to avoid
shadow_dirty_mask and use PT_DIRTY_MASK instead.

Misdetecting dirty pages could lead to unnecessarily setting the dirty bit
under EPT.

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

parent 7ffd92c5

arch/x86/kvm/mmu.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -242,7 +242,7 @@ static int is_writeble_pte(unsigned long pte)

		static int is_dirty_pte(unsigned long pte)
		{
		return pte & shadow_dirty_mask;
		return pte & PT_DIRTY_MASK;
		}

		static int is_rmap_pte(u64 pte)