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path: root/drivers/xen/events.c
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Diffstat (limited to 'drivers/xen/events.c')
-rw-r--r--drivers/xen/events.c22
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 7c3705479ea..2c8d710713f 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -30,6 +30,7 @@
#include <asm/ptrace.h>
#include <asm/irq.h>
+#include <asm/idle.h>
#include <asm/sync_bitops.h>
#include <asm/xen/hypercall.h>
#include <asm/xen/hypervisor.h>
@@ -517,6 +518,24 @@ irqreturn_t xen_debug_interrupt(int irq, void *dev_id)
}
+static void xen_do_irq(unsigned irq, struct pt_regs *regs)
+{
+ struct pt_regs *old_regs = set_irq_regs(regs);
+
+ if (WARN_ON(irq == -1))
+ return;
+
+ exit_idle();
+ irq_enter();
+
+ //printk("cpu %d handling irq %d\n", smp_processor_id(), info->irq);
+ handle_irq(irq, regs);
+
+ irq_exit();
+
+ set_irq_regs(old_regs);
+}
+
/*
* Search the CPUs pending events bitmasks. For each one found, map
* the event number to an irq, and feed it into do_IRQ() for
@@ -557,8 +576,7 @@ void xen_evtchn_do_upcall(struct pt_regs *regs)
int port = (word_idx * BITS_PER_LONG) + bit_idx;
int irq = evtchn_to_irq[port];
- if (irq != -1)
- xen_do_IRQ(irq, regs);
+ xen_do_irq(irq, regs);
}
}