qemu-kvm-0.12.4 with bochs bios

qemu-kvm-0.12.4 with bochs bios

[Sasha Levin]

Hi,

I've tried running an image using the new qemu-kvm-0.12.4 using a
BOCHS BIOS (using the -bios parameter).
When the machine starts the QEMU window gets minimized into a 1x1
pixel box and just stops.

Starting the same machine with the same BIOS on 0.12.3 is working great.

Is starting qemu using the BOCHS BIOS no longer supported? Or is it a bug?

Let me know if theres any debug info I can pull out to help finding the issue.

Commandline:
qemu-system-x86_64 -bios /usr/share/bochs/BIOS-bochs-latest
/<path-to-img>/server5.img

laptop bin # ./qemu-system-x86_64 --version
QEMU PC emulator version 0.12.4 (qemu-kvm-0.12.4), Copyright (c)
2003-2008 Fabrice Bellard

laptop bin # uname -a
Linux laptop 2.6.34-rc6-git3 #1 SMP PREEMPT Wed May 5 16:32:23 IDT
2010 x86_64 Intel(R) Core(TM)2 Duo CPU P8700 @ 2.53GHz GenuineIntel
GNU/Linux


Thanks,
Sasha

Re: qemu-kvm-0.12.4 with bochs bios

[Avi Kivity]

On 05/10/2010 11:16 AM, Sasha Levin wrote:
> Hi,
>
> I've tried running an image using the new qemu-kvm-0.12.4 using a
> BOCHS BIOS (using the -bios parameter).
> When the machine starts the QEMU window gets minimized into a 1x1
> pixel box and just stops.
>
> Starting the same machine with the same BIOS on 0.12.3 is working great.
>
> Is starting qemu using the BOCHS BIOS no longer supported? Or is it a bug?
>    

The bochs bios is not supported in 0.12.  Why do you need to use it?

If there's a simple fix that can make it work I don't we can include it.

> Let me know if theres any debug info I can pull out to help finding the issue.
>    

A bisection to find the offending commit would be good.  I suggest 
starting with upstream qemu 0.12.3 and 0.12.4.  If 0.12.3 works and 
0.12.4 fails, you can try a simple git bisect to find what commit 
introduced the problem.

-- 
error compiling committee.c: too many arguments to function

Re: qemu-kvm-0.12.4 with bochs bios

[Sasha Levin]

On Mon, May 10, 2010 at 11:35 AM, Avi Kivity <avi@redhat.com> wrote:
> On 05/10/2010 11:16 AM, Sasha Levin wrote:
>>
>> Hi,
>>
>> I've tried running an image using the new qemu-kvm-0.12.4 using a
>> BOCHS BIOS (using the -bios parameter).
>> When the machine starts the QEMU window gets minimized into a 1x1
>> pixel box and just stops.
>>
>> Starting the same machine with the same BIOS on 0.12.3 is working great.
>>
>> Is starting qemu using the BOCHS BIOS no longer supported? Or is it a bug?
>>
>
> The bochs bios is not supported in 0.12.  Why do you need to use it?
>
> If there's a simple fix that can make it work I don't we can include it.

I've tried doing cpu hotplug using cpu_set on 0.12.3 but it caused a
segfault, but now on 0.12.4 it seems to add the cpu - but it looks
like SeaBIOS doesn't support cpu hotplug.

I want to try doing the same with BOCHS.

>> Let me know if theres any debug info I can pull out to help finding the
>> issue.
>>
>
> A bisection to find the offending commit would be good.  I suggest starting
> with upstream qemu 0.12.3 and 0.12.4.  If 0.12.3 works and 0.12.4 fails, you
> can try a simple git bisect to find what commit introduced the problem.
>

I'll send an update when I find the commit.

Re: qemu-kvm-0.12.4 with bochs bios

[Michael Tokarev]

10.05.2010 12:16, Sasha Levin wrote:
> Hi,
>
> I've tried running an image using the new qemu-kvm-0.12.4 using a
> BOCHS BIOS (using the -bios parameter).
> When the machine starts the QEMU window gets minimized into a 1x1
> pixel box and just stops.
>
> Starting the same machine with the same BIOS on 0.12.3 is working great.

Actually I tried this many times in different situation, and it never
worked for me. qemu-kvm-0.12.* with older bios (bochs) never boots for
me, it opens the SDL window but that window has nothing in it, it's
completely blank, and the whole thing sits here forever doing nothing.

Thanks!

/mjt