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x86, xen: do multicall callbacks with interrupts disabled
author
Jeremy Fitzhardinge
<jeremy@goop.org>
Fri, 6 Feb 2009 21:38:56 +0000
(13:38 -0800)
committer
Ingo Molnar
<mingo@elte.hu>
Mon, 16 Feb 2009 07:56:41 +0000
(08:56 +0100)
We can't call the callbacks after enabling interrupts, as we may get a
nested multicall call, which would cause a great deal of havok.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/xen/multicalls.c
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diff --git
a/arch/x86/xen/multicalls.c
b/arch/x86/xen/multicalls.c
index 6cffd5532b913b6a1363f82ca8b65097d3c83e9c..8bff7e7c290b7d30ef805061115690e7267dc4a9 100644
(file)
--- a/
arch/x86/xen/multicalls.c
+++ b/
arch/x86/xen/multicalls.c
@@
-170,8
+170,6
@@
void xen_mc_flush(void)
} else
BUG_ON(b->argidx != 0);
- local_irq_restore(flags);
-
for (i = 0; i < b->cbidx; i++) {
struct callback *cb = &b->callbacks[i];
@@
-179,6
+177,8
@@
void xen_mc_flush(void)
}
b->cbidx = 0;
+ local_irq_restore(flags);
+
WARN_ON(ret);
}