From: Alexey Kardashevskiy <aik@ozlabs.ru>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: "Stefan Hajnoczi" <stefanha@redhat.com>,
"QEMU Developers" <qemu-devel@nongnu.org>,
"Markus Armbruster" <armbru@redhat.com>,
"Alexander Graf" <agraf@suse.de>,
"Luiz Capitulino" <lcapitulino@redhat.com>,
"qemu-ppc@nongnu.org" <qemu-ppc@nongnu.org>,
"Alex Bligh" <alex@alex.org.uk>,
"Cornelia Huck" <cornelia.huck@de.ibm.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Andreas Färber" <afaerber@suse.de>,
"Richard Henderson" <rth@twiddle.net>
Subject: Re: [Qemu-devel] [PATCH v3 0/4] cpus: Add generic NMI support
Date: Wed, 04 Jun 2014 19:39:05 +1000 [thread overview]
Message-ID: <538EE939.4090801@ozlabs.ru> (raw)
In-Reply-To: <CAFEAcA9E2cAv7HdAvwcGHJ8RWq1gN2d+mrbdP+6utyQGeejoRw@mail.gmail.com>
On 06/04/2014 07:33 PM, Peter Maydell wrote:
> On 4 June 2014 10:30, Alexey Kardashevskiy <aik@ozlabs.ru> wrote:
>> On 06/04/2014 07:16 PM, Peter Maydell wrote:
>>> On 4 June 2014 09:08, Alexey Kardashevskiy <aik@ozlabs.ru> wrote:
>>>> This adds an NMI handler per CPUs. x86, s390 and ppc CPUS are supported.
>>>>
>>>> The change to existing behaviour is that x86 only delivers NMI to
>>>> the current monitored CPU now, not to every CPU.
>>>
>>> So this series means that the "nmi" command and handler does
>>> * NMI on x86
>>> * reset on PPC
>>
>> The vector is called "reset" but it is an interrupt, and I do not see any
>> way to mask it.
>>
>>> * restart on S390
>>
>> The vector is called "restart" but it is still an interrupt.
>
> So? ARM has an interrupt called "NMI" but there's zero reason
> you'd want to poke it from the monitor, any more than you'd
> want to try to hand-send any other kind of interrupt.
>
>>> That doesn't seem generic at all, and suggests this should
>>> not be a common CPU method/callback.
>>
>> Oh. Ok. Suggestions?
>
> I dunno. What are you actually trying to achieve?
I personally want to get XMON (in-kernel debugger) on PPC.
--
Alexey
next prev parent reply other threads:[~2014-06-04 9:39 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-04 8:08 [Qemu-devel] [PATCH v3 0/4] cpus: Add generic NMI support Alexey Kardashevskiy
2014-06-04 8:08 ` [Qemu-devel] [PATCH v3 1/4] cpus: Define NMI callback Alexey Kardashevskiy
2014-06-10 13:39 ` Luiz Capitulino
2014-06-10 14:41 ` Cornelia Huck
2014-06-10 14:48 ` Luiz Capitulino
2014-06-10 16:29 ` Paolo Bonzini
2014-06-10 18:09 ` Alexander Graf
2014-06-11 0:12 ` Alexey Kardashevskiy
2014-06-11 0:21 ` Alexander Graf
2014-06-11 0:23 ` Peter Maydell
2014-06-11 0:28 ` Alexander Graf
2014-06-11 4:59 ` Paolo Bonzini
2014-06-11 8:01 ` Alexander Graf
2014-06-11 8:27 ` Paolo Bonzini
2014-06-11 8:29 ` Alexander Graf
2014-06-11 8:37 ` Paolo Bonzini
2014-06-11 8:42 ` Alexander Graf
2014-06-11 10:47 ` Paolo Bonzini
2014-06-11 10:59 ` [Qemu-devel] [Qemu-ppc] " Benjamin Herrenschmidt
2014-06-11 12:04 ` [Qemu-devel] " Alexander Graf
2014-06-11 9:04 ` Alexey Kardashevskiy
2014-06-11 9:19 ` Alexander Graf
2014-06-11 13:10 ` Luiz Capitulino
2014-06-11 13:36 ` Cornelia Huck
2014-06-11 13:42 ` Luiz Capitulino
2014-06-11 6:50 ` Alexey Kardashevskiy
2014-06-11 7:57 ` Paolo Bonzini
2014-06-11 8:38 ` Cornelia Huck
2014-06-11 9:18 ` Cornelia Huck
2014-06-10 15:13 ` Eric Blake
2014-06-10 15:40 ` Alexey Kardashevskiy
2014-06-11 12:50 ` Luiz Capitulino
2014-06-04 8:08 ` [Qemu-devel] [PATCH v3 2/4] target-s390x: Migrate to new nmi() CPU callback Alexey Kardashevskiy
2014-06-04 8:08 ` [Qemu-devel] [PATCH v3 3/4] target-i386: " Alexey Kardashevskiy
2014-06-04 8:08 ` [Qemu-devel] [PATCH v3 4/4] target-ppc: Add support for " Alexey Kardashevskiy
2014-06-04 9:11 ` [Qemu-devel] [PATCH v3 0/4] cpus: Add generic NMI support Paolo Bonzini
2014-06-04 9:16 ` Peter Maydell
2014-06-04 9:30 ` Alexey Kardashevskiy
2014-06-04 9:33 ` Peter Maydell
2014-06-04 9:38 ` Alexander Graf
2014-06-04 9:39 ` Alexey Kardashevskiy [this message]
2014-06-04 9:39 ` Paolo Bonzini
2014-06-04 9:47 ` Peter Maydell
2014-06-04 9:50 ` Alexander Graf
2014-06-04 10:44 ` [Qemu-devel] [Qemu-ppc] " Greg Kurz
2014-06-04 10:51 ` Cornelia Huck
2014-06-04 11:34 ` [Qemu-devel] " Alexey Kardashevskiy
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