Commit 8de07bbd authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge
Browse files

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: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
parent 4185f354

arch/x86/xen/mmu.c

+2 −2
Original line number Original line Diff line number Diff line
@@ -1293,8 +1293,8 @@ static void xen_flush_tlb_others(const struct cpumask *cpus, 
	} *args;

	} *args;

	struct multicall_space mcs;

	struct multicall_space mcs;





	BUG_ON(cpumask_empty(cpus));

	if (cpumask_empty(cpus))

	BUG_ON(!mm);

		return;		/* nothing to do */





	mcs = xen_mc_entry(sizeof(*args));

	mcs = xen_mc_entry(sizeof(*args));

	args = mcs.args;

	args = mcs.args;

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