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Re: [Qemu-devel] E5-2620v2 - emulation stop error
From: |
Dr. David Alan Gilbert |
Subject: |
Re: [Qemu-devel] E5-2620v2 - emulation stop error |
Date: |
Tue, 10 Mar 2015 19:37:28 +0000 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
* Paolo Bonzini (address@hidden) wrote:
>
>
> On 10/03/2015 19:21, Bandan Das wrote:
> > Paolo Bonzini <address@hidden> writes:
> >
> >> On 10/03/2015 17:57, Dr. David Alan Gilbert wrote:
> >>> I'm seeing something similar; it's very intermittent and generally
> >>> happening right at boot of the guest; I'm running this on qemu
> >>> head+my postcopy world (but it's happening right at boot before postcopy
> >>> gets a chance), and I'm using a 3.19ish kernel. Xeon E5-2407 in my case
> >>> but hey maybe I'm seeing a different bug.
> >
> > Probably a tangent but is the qemu trace identical to what Andrey is seeing
> > ?
> > From a cursory look and my limited understanding, it seems his failure is
> > #GP
> > when executing video bios.
> >
> >> Same here on 3.16 + Xeon E5 v3 kernel.
> >
> > I will try to reproduce this on a v2.
>
> I see several failures, usually mine have suberror 1. With a 32-VCPU
> guest I can reproduce it roughly half of the time.
Oh yes, that helps:
while true; do (sleep 5; echo -e
'\001cq\n')|/opt/qemu-try-world3/bin/qemu-system-x86_64 -machine
pc-i440fx-2.3,accel=kvm -m 8192 -smp 20 -nographic -device sga; done
gets it under a minute on my other box; Intel(R) Xeon(R) CPU E5-2620 v2 @
2.10GHz
(Running a 3.18)
Dave
> Paolo
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, (continued)
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Andrey Korolyov, 2015/03/06
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Andrey Korolyov, 2015/03/10
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Dr. David Alan Gilbert, 2015/03/10
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Andrey Korolyov, 2015/03/10
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Dr. David Alan Gilbert, 2015/03/10
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Andrey Korolyov, 2015/03/10
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Paolo Bonzini, 2015/03/10
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Paolo Bonzini, 2015/03/10
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Bandan Das, 2015/03/10
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Paolo Bonzini, 2015/03/10
- Re: [Qemu-devel] E5-2620v2 - emulation stop error,
Dr. David Alan Gilbert <=
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Dr. David Alan Gilbert, 2015/03/10
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Bandan Das, 2015/03/10
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Dr. David Alan Gilbert, 2015/03/11
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Kevin O'Connor, 2015/03/11
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Dr. David Alan Gilbert, 2015/03/11
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Kevin O'Connor, 2015/03/11
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Dr. David Alan Gilbert, 2015/03/11
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Kevin O'Connor, 2015/03/11
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Paolo Bonzini, 2015/03/11
- Re: [Qemu-devel] E5-2620v2 - emulation stop error, Dr. David Alan Gilbert, 2015/03/11