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[Qemu-devel] Re: [Qemu-commits] [COMMIT c0b1905] qemu/pci: reset device
From: |
Michael S. Tsirkin |
Subject: |
[Qemu-devel] Re: [Qemu-commits] [COMMIT c0b1905] qemu/pci: reset device registers on bus reset |
Date: |
Wed, 7 Oct 2009 22:07:35 +0200 |
User-agent: |
Mutt/1.5.19 (2009-01-05) |
On Wed, Oct 07, 2009 at 10:01:19PM +0200, Avi Kivity wrote:
> On 10/07/2009 09:53 PM, Michael S. Tsirkin wrote:
>> On Wed, Oct 07, 2009 at 10:20:19AM +0200, Avi Kivity wrote:
>>
>>> On 10/05/2009 04:53 PM, Anthony Liguori wrote:
>>>
>>>> From: Michael S. Tsirkin<address@hidden>
>>>>
>>>> Reset BARs and a couple of other registers on bus reset, as per PCI
>>>> spec.
>>>>
>>>>
>>> This commit breaks Windows XP restart. After a restart Windows switches
>>> from 800x600 cirrus logic vga to 640x480 standard vga. My guess is that
>>> this is due to two mutually-cancelling bugs:
>>>
>> Could you please tell me how to reproduce the problem exactly?
>> I tried several configurations but in all of them windows
>> seems to keep 800x600 across restarts, and shows display adapter
>> as cirrus vga.
>>
>
> Clean Windows XP install (-smp 2), boot, reboot.
>
> After restart it also loses S3 (so Standby is gr[ae]yed out in the
> shutdown menu).
OK, see it now, finally. I'll work on it.
> --
> Do not meddle in the internals of kernels, for they are subtle and quick to
> panic.