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From: Alexander Boettcher <alexander.boettcher@genode-labs.com>
To: "Alex Bennée" <alex.bennee@linaro.org>
Cc: qemu-devel@nongnu.org, rth@twiddle.net,
	fred.konrad@greensocs.com, pbonzini@redhat.com,
	crosthwaite.peter@gmail.com
Subject: Re: [Qemu-devel] Qemu deadlocks in tb_lock when using SVM+SoftMMU
Date: Mon, 6 Mar 2017 14:21:09 +0100	[thread overview]
Message-ID: <6515bcf7-e3cd-21b4-746b-c386b1296d88@genode-labs.com> (raw)
In-Reply-To: <87k282im0q.fsf@linaro.org>

Hi,

On 06.03.2017 14:15, Alex Bennée wrote:
> I found the virtualbox.iso on your branch but I can't trigger the
> assert. Running:
> 
> #!/bin/sh
> 
> QEMU="$@"
> 
> ${QEMU} -s -no-kvm -display sdl -m 512 -cpu phenom -nographic -cdrom virtualbox.iso
> 
> I get:
> 
> NOVA Microhypervisor v7-2436fe2 (x86_32): Feb 25 2017 17:58:48 [gcc 4.9.2]
> [init -> log_terminal]
> [init -> log_terminal] [ 0] CORE:0:0:0 10:2:3:0 [0] AMD Phenom(tm) 9550 Quad-Core Processor
> qemu: fatal: invalid tss type


> Which is a guest error?

It's a race which happens in Qemu (not on hardware), so I still
investigating it within Qemu. Because of that on [0] the commit before
the virtualbox.iso is one commit to avoid this for the moment in order
to continue.

>> [0] https://github.com/alex-ab/qemu/commits/genode_svm_issue

Alex.

-- 
Alexander Boettcher
Genode Labs

http://www.genode-labs.com - http://www.genode.org

Genode Labs GmbH - Amtsgericht Dresden - HRB 28424 - Sitz Dresden
Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth

  reply	other threads:[~2017-03-06 13:21 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-05 16:59 [Qemu-devel] Qemu deadlocks in tb_lock when using SVM+SoftMMU Alexander Boettcher
2017-03-05 21:32 ` Alex Bennée
2017-03-06  1:34   ` Richard Henderson
2017-03-06 16:58     ` Paolo Bonzini
2017-03-06 19:21       ` Richard Henderson
2017-03-06 20:03       ` Alexander Boettcher
2017-03-06 13:15 ` Alex Bennée
2017-03-06 13:21   ` Alexander Boettcher [this message]
2017-03-06 14:42     ` Alex Bennée
2017-03-06 15:11       ` Alexander Boettcher
2017-03-06 15:57         ` [Qemu-devel] [PATCH] target/i386: move nested exception check to x86_cpu_exec_interrupt Alex Bennée
2017-03-06 19:24           ` Richard Henderson
2017-03-07 15:03             ` Alex Bennée
2017-03-06 16:24         ` [Qemu-devel] Qemu deadlocks in tb_lock when using SVM+SoftMMU Alex Bennée
2017-03-06 20:11           ` Alexander Boettcher
2017-03-06 20:56             ` Paolo Bonzini

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