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openSUSE:12.1
xen
23103-x86-pirq-guest-eoi-check.patch
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File 23103-x86-pirq-guest-eoi-check.patch of Package xen
# HG changeset patch # User Keir Fraser <keir@xen.org> # Date 1301132521 0 # Node ID 48dac730a93b27ff60a340564e9a7afd7f9385f4 # Parent 8f001d864fefac689b7662bc9979eaddf4fd6e9c x86: __pirq_guest_eoi() must check it is called for a fully guest-bound irq before accessing desc->action. Signed-off-by: Keir Fraser <keir@xen.org> Index: xen-4.1.2-testing/xen/arch/x86/irq.c =================================================================== --- xen-4.1.2-testing.orig/xen/arch/x86/irq.c +++ xen-4.1.2-testing/xen/arch/x86/irq.c @@ -1033,6 +1033,12 @@ static void __pirq_guest_eoi(struct doma return; } + if ( !(desc->status & IRQ_GUEST) ) + { + spin_unlock_irq(&desc->lock); + return; + } + action = (irq_guest_action_t *)desc->action; irq = desc - irq_desc;
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