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From: | Anthony Liguori |
Subject: | Re: [Qemu-devel] [RFC][PATCH] disable special ioapic inti0 routing |
Date: | Fri, 06 Feb 2009 17:51:08 -0600 |
User-agent: | Thunderbird 2.0.0.19 (X11/20090105) |
Jan Kiszka wrote:
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.
Are you using an old bios by chance? The reason this fixes KVM has nothing to do with QEMU FWIW so if this fixes something for you, it's just a coincidence.
Regards, Anthony Liguroi
Thanks, Jan -------> From: Avi Kivity <address@hidden> 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; +#endifif (vector >= 0 && vector < IOAPIC_NUM_PINS) {uint32_t mask = 1 << vector;
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