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Subject[PATCH 32/50] KVM: MMU: Fix nx access bit for huge pages
Date
We must set the bit before the shift, otherwise the wrong bit gets set.

Signed-off-by: Avi Kivity <avi@qumranet.com>
---
drivers/kvm/paging_tmpl.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/kvm/paging_tmpl.h b/drivers/kvm/paging_tmpl.h
index da36e48..e07cb2e 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 {
--
1.5.3.7


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