From f8f4a1faca41ae9683b8f76bbe85b8f307ed79e4 Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi@qumranet.com>
Date: Wed, 27 Aug 2008 16:32:24 +0300
Subject: [PATCH] --- yaml --- r: 115295 b: refs/heads/master c:
 2245a28fe2e6fdb1bdabc4dcde1ea3a5c37e2a9e h: refs/heads/master i:   115293:
 8dddb5cf2b4d678a42832af81877b7ee7afd3380   115291:
 7be9d4c11c4c3ff896113f595ab3ef31a049f1e0   115287:
 57488bdaef9526f83b55312a0a2eff4c8959681e   115279:
 c6f804844093292aaab2bcc9433a5e3953c188c8   115263:
 34a9d92f67d47abf5c9032a1ecfe68c87e497fed v: v3

---
 [refs]                   | 2 +-
 trunk/arch/x86/kvm/mmu.c | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index a3afe124cbcd..546abfe7793a 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: bc2d429979451d69d0985c5dbdf908cace2831cc
+refs/heads/master: 2245a28fe2e6fdb1bdabc4dcde1ea3a5c37e2a9e
diff --git a/trunk/arch/x86/kvm/mmu.c b/trunk/arch/x86/kvm/mmu.c
index a24da8f2ee91..5052acdc0a77 100644
--- a/trunk/arch/x86/kvm/mmu.c
+++ b/trunk/arch/x86/kvm/mmu.c
@@ -2097,6 +2097,7 @@ void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot)
 {
 	struct kvm_mmu_page *sp;
 
+	spin_lock(&kvm->mmu_lock);
 	list_for_each_entry(sp, &kvm->arch.active_mmu_pages, link) {
 		int i;
 		u64 *pt;
@@ -2110,6 +2111,7 @@ void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot)
 			if (pt[i] & PT_WRITABLE_MASK)
 				pt[i] &= ~PT_WRITABLE_MASK;
 	}
+	spin_unlock(&kvm->mmu_lock);
 }
 
 void kvm_mmu_zap_all(struct kvm *kvm)