From cc7907e658561426d77c5df0814b807b0a9e048f Mon Sep 17 00:00:00 2001
From: Andy Honig <ahonig@google.com>
Date: Mon, 11 Mar 2013 09:34:52 -0700
Subject: [PATCH] --- yaml --- r: 361505 b: refs/heads/master c:
 c300aa64ddf57d9c5d9c898a64b36877345dd4a9 h: refs/heads/master i:   361503:
 4852eaf1311bf16c4fb95425377214e710fa5bd9 v: v3

---
 [refs]                   | 2 +-
 trunk/arch/x86/kvm/x86.c | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index df2e7b474109..b8be1ce67c60 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c09664bb44184b3846e8c5254db4eae4b932682a
+refs/heads/master: c300aa64ddf57d9c5d9c898a64b36877345dd4a9
diff --git a/trunk/arch/x86/kvm/x86.c b/trunk/arch/x86/kvm/x86.c
index f7c850b36910..2ade60c25402 100644
--- a/trunk/arch/x86/kvm/x86.c
+++ b/trunk/arch/x86/kvm/x86.c
@@ -1959,6 +1959,11 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
 		/* ...but clean it before doing the actual write */
 		vcpu->arch.time_offset = data & ~(PAGE_MASK | 1);
 
+		/* Check that the address is 32-byte aligned. */
+		if (vcpu->arch.time_offset &
+				(sizeof(struct pvclock_vcpu_time_info) - 1))
+			break;
+
 		vcpu->arch.time_page =
 				gfn_to_page(vcpu->kvm, data >> PAGE_SHIFT);