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[Qemu-devel] Re: [RFC][PATCH] disable special ioapic inti0 routing
From: |
Jan Kiszka |
Subject: |
[Qemu-devel] Re: [RFC][PATCH] disable special ioapic inti0 routing |
Date: |
Sat, 07 Feb 2009 03:09:43 +0100 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
Anthony Liguori wrote:
> Jan Kiszka wrote:
>> Anthony Liguori wrote:
>>
>>> 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.
>>>
>>
>> My first thought as well, but the binary bios from latest svn made no
>> difference.
>>
>
> What linux guests broke?
An old 32-bit customized one. And it turned out that it had, for some
reasons I don't recall anymore, ACPI disabled. So it missed the timer
IRQ pin moving QEMU is doing. At the same time, some very similar kernel
with ACPI enabled boots fine. Think I should delete the former from my
test image...
Sorry for the noise,
Jan
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