From 832b6c04f3749c2fe9faf493dba558108e2d540b Mon Sep 17 00:00:00 2001
From: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Date: Wed, 4 Mar 2009 17:36:57 -0800
Subject: [PATCH] --- yaml --- r: 145829 b: refs/heads/master c:
 8de07bbdede03598801cf33ab23dcbcd28a918d2 h: refs/heads/master i:   145827:
 a14d25e3e9ab35a09597189cff62d357738345ea v: v3

---
 [refs]                   | 2 +-
 trunk/arch/x86/xen/mmu.c | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/[refs] b/[refs]
index fc5a65566eeb..7650e86d0089 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4185f35404dc96f8525298c7c548aee419f3b3f4
+refs/heads/master: 8de07bbdede03598801cf33ab23dcbcd28a918d2
diff --git a/trunk/arch/x86/xen/mmu.c b/trunk/arch/x86/xen/mmu.c
index df87c803cecc..e425a32e0a90 100644
--- a/trunk/arch/x86/xen/mmu.c
+++ b/trunk/arch/x86/xen/mmu.c
@@ -1293,8 +1293,8 @@ static void xen_flush_tlb_others(const struct cpumask *cpus,
 	} *args;
 	struct multicall_space mcs;
 
-	BUG_ON(cpumask_empty(cpus));
-	BUG_ON(!mm);
+	if (cpumask_empty(cpus))
+		return;		/* nothing to do */
 
 	mcs = xen_mc_entry(sizeof(*args));
 	args = mcs.args;