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[Xen-changelog] [xen-unstable] x86: allow IRQs to work without APIC agai

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Subject:	[Xen-changelog] [xen-unstable] x86: allow IRQs to work without APIC again
From:	Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>
Date:	Tue, 22 Sep 2009 01:25:31 -0700
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# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1253604506 -3600
# Node ID be747c582738035889d5f3f9d40051818e1af50e
# Parent  8de13ae0a4ee227623df87f69a5f53ea094372d8
x86: allow IRQs to work without APIC again

Non-IO-APIC IRQs must get 1:1 mapped between domain PIRQ and Xen IRQ.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
---
 xen/arch/x86/domain.c |    4 ++++
 1 files changed, 4 insertions(+)

diff -r 8de13ae0a4ee -r be747c582738 xen/arch/x86/domain.c
--- a/xen/arch/x86/domain.c     Tue Sep 22 08:27:10 2009 +0100
+++ b/xen/arch/x86/domain.c     Tue Sep 22 08:28:26 2009 +0100
@@ -487,6 +487,10 @@ int arch_domain_create(struct domain *d,
         memset(d->arch.irq_pirq, 0,
                nr_irqs * sizeof(*d->arch.irq_pirq));
 
+        for ( i = 1; platform_legacy_irq(i); ++i )
+            if ( !IO_APIC_IRQ(i) )
+                d->arch.irq_pirq[i] = d->arch.pirq_irq[i] = i;
+
         if ( (rc = iommu_domain_init(d)) != 0 )
             goto fail;
 

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