Commit 8d5cf161 authored Jul 12, 2016 by Bandan Das Committed by Paolo Bonzini Jul 14, 2016

kvm: mmu: extend the is_present check to 32 bits



This is safe because this function is called
on host controlled page table and non-present/non-MMIO
sptes never use bits 1..31. For the EPT case, this
ensures that cases where only the execute bit is set
is marked valid.

Signed-off-by: Bandan Das <bsd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent 6d5315b3

arch/x86/kvm/mmu.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -304,7 +304,7 @@ static int is_nx(struct kvm_vcpu *vcpu)

		static int is_shadow_present_pte(u64 pte)
		{
		return pte & PT_PRESENT_MASK && !is_mmio_spte(pte);
		return (pte & 0xFFFFFFFFull) && !is_mmio_spte(pte);
		}

		static int is_large_pte(u64 pte)