26 lines
678 B
Diff
26 lines
678 B
Diff
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# HG changeset patch
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# User Keir Fraser <keir@xen.org>
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# Date 1301132521 0
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# Node ID 48dac730a93b27ff60a340564e9a7afd7f9385f4
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# Parent 8f001d864fefac689b7662bc9979eaddf4fd6e9c
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x86: __pirq_guest_eoi() must check it is called for a fully
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guest-bound irq before accessing desc->action.
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Signed-off-by: Keir Fraser <keir@xen.org>
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--- a/xen/arch/x86/irq.c
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+++ b/xen/arch/x86/irq.c
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@@ -1022,6 +1022,12 @@ static void __pirq_guest_eoi(struct doma
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if ( desc == NULL )
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return;
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+ if ( !(desc->status & IRQ_GUEST) )
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+ {
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+ spin_unlock_irq(&desc->lock);
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+ return;
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+ }
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+
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action = (irq_guest_action_t *)desc->action;
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irq = desc - irq_desc;
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