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Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command
From: |
Jan Kiszka |
Subject: |
Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command |
Date: |
Thu, 07 Apr 2011 09:29:00 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
On 2011-04-06 21:34, Anthony Liguori wrote:
> On 04/06/2011 02:27 PM, Peter Maydell wrote:
>>> Right, but honestly speaking, I don't know how this works for other arches.
>>>
>>> So, the best thing to do is to have a general design that can be used
>>> by any architecture. Of course that we can also add a new command later
>>> if needed.
>> Well, I'm not sure "send a random interrupt to the core" makes
>> much sense for ARM... So what are we actually trying to model here?
>> Some sort of way to do "press a front panel switch" via remote monitor
>> protocol? I guess you could have an API for boards to register any
>> switches they had...
>
> http://publib.boulder.ibm.com/infocenter/lnxinfo/v3r0m0/index.jsp?topic=/liaai/crashdump/liaaicrashdumpnmiipmi.htm
>
> If an OS is totally hosed (spinning with interrupts disabled), and NMI
> can be used to generate a crash dump.
>
> It's a debug feature and modelling it exactly the way we are probably
> makes sense for other architectures too. The real semantics are
> basically force guest crash dump.
Right, it's a debugging tool. And that does not necessarily means it has
to match real hardware. I could imagine scenarios where it could be
helpful to direct the NMI to a specific core, e.g. in AMP setups if only
one OS ran wild.
Jan
--
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu, qmp: add inject-nmi qmp command, (continued)
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Avi Kivity, 2011/04/04
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Anthony Liguori, 2011/04/04
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Luiz Capitulino, 2011/04/06
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Anthony Liguori, 2011/04/06
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Luiz Capitulino, 2011/04/06
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Jan Kiszka, 2011/04/06
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Luiz Capitulino, 2011/04/06
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Peter Maydell, 2011/04/06
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Anthony Liguori, 2011/04/06
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command,
Jan Kiszka <=
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Peter Maydell, 2011/04/07
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Anthony Liguori, 2011/04/07
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Gleb Natapov, 2011/04/07
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Blue Swirl, 2011/04/07
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Gleb Natapov, 2011/04/07
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Anthony Liguori, 2011/04/07
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Gleb Natapov, 2011/04/08
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Blue Swirl, 2011/04/08
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Anthony Liguori, 2011/04/08
- Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command, Blue Swirl, 2011/04/08