From c22e3514fceb2f514093ce1d19a2f660ac7347ae Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Thu, 11 Oct 2007 15:08:41 +0200 Subject: [PATCH] KVM: MMU: Fix nx access bit for huge pages We must set the bit before the shift, otherwise the wrong bit gets set. Signed-off-by: Avi Kivity --- drivers/kvm/paging_tmpl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/kvm/paging_tmpl.h b/drivers/kvm/paging_tmpl.h index da36e48fd02..e07cb2e006c 100644 --- a/drivers/kvm/paging_tmpl.h +++ b/drivers/kvm/paging_tmpl.h @@ -382,9 +382,9 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr, metaphysical = 1; hugepage_access = walker->pte; hugepage_access &= PT_USER_MASK | PT_WRITABLE_MASK; + hugepage_access >>= PT_WRITABLE_SHIFT; if (walker->pte & PT64_NX_MASK) hugepage_access |= (1 << 2); - hugepage_access >>= PT_WRITABLE_SHIFT; table_gfn = (walker->pte & PT_BASE_ADDR_MASK) >> PAGE_SHIFT; } else { -- 2.20.1