xen: Fix bug `do_IRQ: cannot handle IRQ -1 vector 0x6 cpu 1'

Following commit 9c3f2468d8339866d9ef6a25aae31a8909c6be0d, do_IRQ()
looks up the IRQ number in the per-cpu variable vector_irq.

This commit makes Xen initialise an identity vector_irq map for both X86_32 and X86_64.

Signed-off-by: Alex Nixon <alex.nixon@citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/xen/irq.c b/arch/x86/xen/irq.c
index 28b85ab8422eb17d883ed031da6021f70259ae9d..bb042608c6023fd8214139d64befd8217797ba43 100644 (file)
--- a/arch/x86/xen/irq.c
+++ b/arch/x86/xen/irq.c
@@ -21,7 +21,6 @@ void xen_force_evtchn_callback(void)
 
 static void __init __xen_init_IRQ(void)
 {
-#ifdef CONFIG_X86_64
        int i;
 
        /* Create identity vector->irq map */
@@ -31,7 +30,6 @@ static void __init __xen_init_IRQ(void)
                for_each_possible_cpu(cpu)
                        per_cpu(vector_irq, cpu)[i] = i;
        }
-#endif /* CONFIG_X86_64 */
 
        xen_init_IRQ();
 }