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| author | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2009-03-05 01:36:57 (GMT) |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2009-04-08 21:25:46 (GMT) |
| commit | e3f8a74e3a884b91a4390c66ed8175ef74db7067 (patch) | |
| tree | c0a891e10c9ab2ab3726228a8cbc4c868a997737 /arch/x86/xen | |
| parent | b96229b50d71c548302053c244b89572a5264c0b (diff) | |
| download | linux-e3f8a74e3a884b91a4390c66ed8175ef74db7067.tar.xz | |
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 4db24e1..7ef880c 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1302,8 +1302,8 @@ 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; |