[Qemu-devel] [RFC][PATCH] disable special ioapic inti0 routing

[Jan Kiszka <jan.kiszka@web.de>]

This patch comes from the kvm tree and fixes the timer IRQ routing for
me which is broken from the POV of certain Linux guest kernels. As I'm
not up-to-date with the development around that problematic hunk, I'm
leaving it to someone more deeply involved to sign this off. But please
commit some fix.

Thanks,
Jan

------->

From: Avi Kivity <avi@redhat.com>

we don't support it yet (need bios support, and modifications to kernel
irq routing).

---
 qemu/hw/apic.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/qemu/hw/apic.c b/qemu/hw/apic.c
index df80444..f9ef995 100644
--- a/qemu/hw/apic.c
+++ b/qemu/hw/apic.c
@@ -1055,12 +1055,14 @@ void ioapic_set_irq(void *opaque, int vector, int level)
 {
     IOAPICState *s = opaque;
 
+#if 0
     /* ISA IRQs map to GSI 1-1 except for IRQ0 which maps
      * to GSI 2.  GSI maps to ioapic 1-1.  This is not
      * the cleanest way of doing it but it should work. */
 
     if (vector == 0)
         vector = 2;
+#endif
 
     if (vector >= 0 && vector < IOAPIC_NUM_PINS) {
         uint32_t mask = 1 << vector;