[Qemu-devel] Add handling of edge triggered interrupts in function pic_irq_request.

[Erik de Castro Lopo <mle+tools@mega-nerd.com>]

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This fixes a regression that prevents Win XP64 from installing and running
under Qemu. The original breakage happened in the transition fron SVN
revision 3371 to 3372.
---
 hw/pc.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

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diff --git a/hw/pc.c b/hw/pc.c
index c92384c..65ea5c6 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -118,8 +118,10 @@ static void pic_irq_request(void *opaque, int irq, int level)
 {
     CPUState *env = first_cpu;
 
-    if (!level)
+    if (!level) {
+        cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
         return;
+    }
 
     while (env) {
         if (apic_accept_pic_intr(env))