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Re: [Qemu-devel] current qemu git does not work with win7 guest
From: |
Michael Tokarev |
Subject: |
Re: [Qemu-devel] current qemu git does not work with win7 guest |
Date: |
Mon, 07 May 2012 22:21:16 +0400 |
User-agent: |
Mozilla/5.0 (X11; Linux i686 on x86_64; rv:10.0.3) Gecko/20120329 Icedove/10.0.3 |
On 07.05.2012 22:07, Jan Kiszka wrote:
> On 2012-05-07 14:48, Michael Tokarev wrote:
>> On 07.05.2012 19:32, Jan Kiszka wrote:
>>> On 2012-05-07 11:45, Michael Tokarev wrote:
>> []
>>>> $ ./x86_64-softmmu/qemu-system-x86_64 -enable-kvm -drive
>>>> file=w7x32sp1.raw,if=virtio,snapshot=on -m 1G -net none -machine
>>>> accel=kvm,kernel_irqchip=on
>>>
>>> Can you check if -global apic.vapic=off makes any difference in the
>>> broken case? I'm facing general issues in that setup once I enable
>>> virtio-block - independent of vapic on/off or in-kernel/userspace. The
>>> boot freezes, and qemu can only be terminated via kill -9. So, retrying
>>> with IDE as block interface would also be interesting.
>>
>> Both switching from virtio to ide and disabling vapic fixes the reboot
>> issue, so win guests starts rebooting fine.
>
> You mean doing both at the same time, or also when you only apply one
> workaround? For me, disabling the vapic had _no_ impact, only disabling
> virtio allowed to boot at all.
One at a time - either vapic=off or virtio=>ide. Both at once also works.
I just rechecked, -- yes indeed, any of the two is enought to make win
guest to reboot fine. Sorry for being unclean.
> I suspect something is subtly broken in qemu, and it is not directly
> related to the vapic, maybe even not virtio.
Well, might be, in your case.. ;)
Yes I understand that you've hit different issue there. Just like
me while trying to bisect it, -- I've hit the -vga std non-functioning
somewhere in between 1.0 and current ;)
The issue I'm hitting is quite "reliable", so to say.
Thanks,
/mjt
- Re: [Qemu-devel] current qemu git does not work with win7 guest, (continued)
Re: [Qemu-devel] current qemu git does not work with win7 guest, Michael Tokarev, 2012/05/07
- Re: [Qemu-devel] current qemu git does not work with win7 guest, Jan Kiszka, 2012/05/07
- Re: [Qemu-devel] current qemu git does not work with win7 guest, Michael Tokarev, 2012/05/07
- Re: [Qemu-devel] current qemu git does not work with win7 guest, Jan Kiszka, 2012/05/07
- Re: [Qemu-devel] current qemu git does not work with win7 guest, Michael Tokarev, 2012/05/07
- Re: [Qemu-devel] current qemu git does not work with win7 guest, Jan Kiszka, 2012/05/07
- Re: [Qemu-devel] current qemu git does not work with win7 guest, Michael Tokarev, 2012/05/07
- Re: [Qemu-devel] current qemu git does not work with win7 guest, Jan Kiszka, 2012/05/07
- Re: [Qemu-devel] current qemu git does not work with win7 guest,
Michael Tokarev <=
Re: [Qemu-devel] current qemu git does not work with win7 guest, Avi Kivity, 2012/05/07