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From: Christian Hesse <mail@earthworm.de>
To: Ingo Molnar <mingo@elte.hu>
Subject: crash with CFS v4 and qemu/kvm (was: [patch] CFS scheduler, v4)
Date: Mon, 23 Apr 2007 11:28:18 +0200
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Cc: linux-kernel@vger.kernel.org, Con Kolivas <kernel@kolivas.org>,
       Nick Piggin <npiggin@suse.de>, Mike Galbraith <efault@gmx.de>,
       Arjan van de Ven <arjan@infradead.org>,
       Peter Williams <pwil3058@bigpond.net.au>,
       Thomas Gleixner <tglx@linutronix.de>, caglar@pardus.org.tr,
       Willy Tarreau <w@1wt.eu>, Gene Heskett <gene.heskett@gmail.com>,
       kvm-devel@lists.sourceforge.net, Avi Kivity <avi@qumranet.com>
References: <20070420140457.GA14017@elte.hu>
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On Friday 20 April 2007, Ingo Molnar wrote:
> i'm pleased to announce release -v4 of the CFS patchset.

Hi Ingo, hi Avi, hi all,

I'm trying to use kvm-20 with cfs v4 and get a crash:

eworm@revo:~$ /usr/local/kvm/bin/qemu -snapshot /mnt/data/virtual/qemu/winx=
p.img
kvm_run: failed entry, reason 7
kvm_run returned -8

It works (though it is a bit slow) if I start qemu with strace, so for me i=
t=20
looks like a race condition?

I did not test any earlier versions of cfs and kvm in combination - I can't=
=20
say if it happens there as well.
=2D-=20
Regards,
Chris

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