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| author | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2009-03-04 17:36:57 -0800 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2009-03-30 09:25:34 -0700 |
| commit | 8de07bbdede03598801cf33ab23dcbcd28a918d2 (patch) | |
| tree | 9caf7228d87561b411e0057c0a4b9107fc416ee2 /arch/x86/xen | |
| parent | 4185f35404dc96f8525298c7c548aee419f3b3f4 (diff) | |
| download | op-kernel-dev-8de07bbdede03598801cf33ab23dcbcd28a918d2.zip op-kernel-dev-8de07bbdede03598801cf33ab23dcbcd28a918d2.tar.gz | |
xen/mmu: weaken flush_tlb_other test
Impact: fixes crashing bug
There's no particular problem with getting an empty cpu mask,
so just shortcut-return if we get one.
Avoids crash reported by Christophe Saout <christophe@saout.de>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Diffstat (limited to 'arch/x86/xen')
| -rw-r--r-- | arch/x86/xen/mmu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index df87c80..e425a32 100644 --- a/arch/x86/xen/mmu.c +++ b/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; |
