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From: Jan Kiszka <jan.kiszka@siemens.com>
To: Martin Wolf <mwolf@adiumentum.com>
Cc: Alex Williamson <alex.williamson@redhat.com>,
	"kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: vga passthrough // questions about pci passthrough
Date: Thu, 19 Jul 2012 18:13:48 +0200	[thread overview]
Message-ID: <5008323C.7060107@siemens.com> (raw)
In-Reply-To: <50081FBC.7060208@adiumentum.com>

On 2012-07-19 16:54, Martin Wolf wrote:
> i tried now the alpha of ubuntu 12.10 that includes qemu-kvm 1.1
> and a 3.5 kernel version.
> 
> the "msr" problem is gone now, i was able to select "sandybridge" as
> cpu topology, this removed the MSR error messages.
> thats the positive part...
> 
> unfortunately i had no success with the other topics (rebootability and
> the soundcard)
> 
> rebootability:
> the guest vm still crashes with a page fault bluescreen

So this card likely needs special steps to trigger a reset. Then only
the vendor can help.

> 
> soundcard:
> it would be really nice if someone would be able to give me
> some advise how to debug this problem.

Check /proc/interrupts for other users of IRQ 11. Disable them as a
first try.

What would also be interesting is the output of qemu-kvm 1.1 regarding
why the card still doesn't work. Did it change?

Jan

-- 
Siemens AG, Corporate Technology, CT RTC ITP SDP-DE
Corporate Competence Center Embedded Linux



  reply	other threads:[~2012-07-19 16:13 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-18  5:45 vga passthrough // questions about pci passthrough Martin Wolf
2012-07-18  9:26 ` Jan Kiszka
2012-07-18 12:08   ` Martin Wolf
2012-07-18 12:37     ` Martin Wolf
2012-07-18 14:23       ` Alex Williamson
2012-07-19 14:54         ` Martin Wolf
2012-07-19 16:13           ` Jan Kiszka [this message]
2012-07-19 16:16           ` Alex Williamson
2012-09-27 11:19             ` Martin Wolf
2012-09-27 17:56               ` Alex Williamson
2012-09-27 18:43                 ` Martin Wolf
2012-09-27 19:18                   ` Alex Williamson
2012-09-27 19:37                     ` Martin Wolf
2012-09-27 20:46                       ` Alex Williamson
2012-09-28  5:15                         ` Martin Wolf
2012-09-28  8:12                     ` Jan Kiszka
2012-09-28 14:45                       ` Martin Wolf
2012-09-28 15:50                       ` Alex Williamson
2012-09-28 16:29                         ` Jan Kiszka
2012-10-02  8:22                           ` Martin Wolf
2012-12-13 22:47                             ` Erik Hardesty
2012-09-12  7:31 YunQiang Su

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