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Re: [Qemu-devel] Qemu deadlocks in tb_lock when using SVM+SoftMMU
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] Qemu deadlocks in tb_lock when using SVM+SoftMMU |
Date: |
Mon, 6 Mar 2017 15:56:35 -0500 (EST) |
----- Original Message -----
> From: "Alexander Boettcher" <address@hidden>
> To: "Alex Bennée" <address@hidden>
> Cc: address@hidden, address@hidden, "fred konrad" <address@hidden>,
> address@hidden,
> "crosthwaite peter" <address@hidden>
> Sent: Monday, March 6, 2017 9:11:04 PM
> Subject: Re: Qemu deadlocks in tb_lock when using SVM+SoftMMU
>
> Hello,
>
> thank you for your effort.
>
> With your patch I get now a 0x3f exception shown by the hypervisor,
> which I have never encountered so far before. The guest kernel seems not
> to start, at least no life sign is shown.
>
> For me the patch of Paolo Bonzini works reliable.
Let's use mine then. :) I'll post it properly tomorrow.
Paolo
> How to proceed ?
>
> Thanks,
>
> Alex.
>
> On 06.03.2017 17:24, Alex Bennée wrote:
> >
> > Alexander Boettcher <address@hidden> writes:
> >
> >> Hi,
> > <snip>
> >>
> >> Sometimes Qemu just succeeds if the timing is well, will see.
> >>
> >> But this is not the point of this issue atm.
> >
> > I've sent a patch that works as Richard suggested. However your test
> > image seems to run into other issues. I have tested it on my known good
> > x86 image and it works.
> >
> > However my knowledge of x86's interrupt architecture is fairly minimal
> > so I'm looking for testing/feedback on the patch.
> >
> >>
> >> Alex.
> >
> >
> > --
> > Alex Bennée
> >
>
> --
> 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
>
- Re: [Qemu-devel] Qemu deadlocks in tb_lock when using SVM+SoftMMU, (continued)
- Re: [Qemu-devel] Qemu deadlocks in tb_lock when using SVM+SoftMMU, Alex Bennée, 2017/03/06
- Re: [Qemu-devel] Qemu deadlocks in tb_lock when using SVM+SoftMMU, Alexander Boettcher, 2017/03/06
- Re: [Qemu-devel] Qemu deadlocks in tb_lock when using SVM+SoftMMU, Alex Bennée, 2017/03/06
- Re: [Qemu-devel] Qemu deadlocks in tb_lock when using SVM+SoftMMU, Alexander Boettcher, 2017/03/06
- [Qemu-devel] [PATCH] target/i386: move nested exception check to x86_cpu_exec_interrupt, Alex Bennée, 2017/03/06
- Re: [Qemu-devel] [PATCH] target/i386: move nested exception check to x86_cpu_exec_interrupt, Richard Henderson, 2017/03/06
- Re: [Qemu-devel] [PATCH] target/i386: move nested exception check to x86_cpu_exec_interrupt, Alex Bennée, 2017/03/07
- Re: [Qemu-devel] Qemu deadlocks in tb_lock when using SVM+SoftMMU, Alex Bennée, 2017/03/06
- Re: [Qemu-devel] Qemu deadlocks in tb_lock when using SVM+SoftMMU, Alexander Boettcher, 2017/03/06
- Re: [Qemu-devel] Qemu deadlocks in tb_lock when using SVM+SoftMMU,
Paolo Bonzini <=