linux-kernel - [PATCH 05/41] KVM: Fix bogus sign extension in mmu mapping audit

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Message-Id: <11754381383730-git-send-email-avi@qumranet.com>
Date:	Sun,  1 Apr 2007 17:35:02 +0300
From:	Avi Kivity <avi@...ranet.com>
To:	kvm-devel@...ts.sourceforge.net
Cc:	linux-kernel@...r.kernel.org, Avi Kivity <avi@...ranet.com>
Subject: [PATCH 05/41] KVM: Fix bogus sign extension in mmu mapping audit

When auditing a 32-bit guest on a 64-bit host, sign extension of the page
table directory pointer table index caused bogus addresses to be shown on
audit errors.

Fix by declaring the index unsigned.

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

diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c
index e85b4c7..266444a 100644
--- a/drivers/kvm/mmu.c
+++ b/drivers/kvm/mmu.c
@@ -1359,7 +1359,7 @@ static void audit_mappings_page(struct kvm_vcpu *vcpu, u64 page_pte,
 
 static void audit_mappings(struct kvm_vcpu *vcpu)
 {
-	int i;
+	unsigned i;
 
 	if (vcpu->mmu.root_level == 4)
 		audit_mappings_page(vcpu, vcpu->mmu.root_hpa, 0, 4);
-- 
1.5.0.5

-
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