Commit e3f8a74e authored Mar 04, 2009 by Jeremy Fitzhardinge

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>

parent b96229b5

arch/x86/xen/mmu.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -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;