From: "Alex Bennée" <alex.bennee@linaro.org>
To: Alexander Boettcher <alexander.boettcher@genode-labs.com>
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, 06 Mar 2017 14:42:37 +0000 [thread overview]
Message-ID: <87innmii02.fsf@linaro.org> (raw)
In-Reply-To: <6515bcf7-e3cd-21b4-746b-c386b1296d88@genode-labs.com>
Alexander Boettcher <alexander.boettcher@genode-labs.com> writes:
> 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.
How can a single-threaded system emulation race with itself?
>
>>> [0] https://github.com/alex-ab/qemu/commits/genode_svm_issue
>
> Alex.
--
Alex Bennée
next prev parent reply other threads:[~2017-03-06 14:42 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
2017-03-06 14:42 ` Alex Bennée [this message]
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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