>From ab2200009d437b59317a322ca0efd2b0d239b74e Mon Sep 17 00:00:00 2001 From: Feng(Eric) Liu <[EMAIL PROTECTED]> Date: Tue, 22 Jan 2008 17:01:29 -0500 Subject: [PATCH] kvm: mmu: fix a potential issue
Since the type of gpa is u64, so extend pte_size to u64. Otherwise, a
potential issue
may happen.
Signed-off-by: Feng(Eric) Liu <[EMAIL PROTECTED]>
---
arch/x86/kvm/mmu.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index cb62ef6..c85b904 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1477,7 +1477,7 @@ void kvm_mmu_pte_write(struct kvm_vcpu *vcpu,
gpa_t gpa,
if ((gpa & (pte_size - 1)) || (bytes < pte_size)) {
gentry = 0;
r = kvm_read_guest_atomic(vcpu->kvm,
- gpa & ~(pte_size - 1),
+ gpa & ~(u64)(pte_size
- 1),
&gentry, pte_size);
new = (const void *)&gentry;
if (r < 0)
--Eric (Liu, Feng)
0001-kvm-mmu-fix-a-potential-issue.patch
Description: 0001-kvm-mmu-fix-a-potential-issue.patch
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