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From: Paolo Bonzini <pbonzini@redhat.com>
To: Alexander Graf <agraf@suse.de>, Peter Maydell <peter.maydell@linaro.org>
Cc: "Alex Bligh" <alex@alex.org.uk>,
	"Alexey Kardashevskiy" <aik@ozlabs.ru>,
	"QEMU Developers" <qemu-devel@nongnu.org>,
	"Markus Armbruster" <armbru@redhat.com>,
	"qemu-ppc@nongnu.org" <qemu-ppc@nongnu.org>,
	"Stefan Hajnoczi" <stefanha@redhat.com>,
	"Cornelia Huck" <cornelia.huck@de.ibm.com>,
	"Luiz Capitulino" <lcapitulino@redhat.com>,
	"Andreas Färber" <afaerber@suse.de>,
	"Richard Henderson" <rth@twiddle.net>
Subject: Re: [Qemu-devel] [PATCH v3 1/4] cpus: Define NMI callback
Date: Wed, 11 Jun 2014 10:37:29 +0200	[thread overview]
Message-ID: <53981549.2090307@redhat.com> (raw)
In-Reply-To: <53981381.6060302@suse.de>

Il 11/06/2014 10:29, Alexander Graf ha scritto:
>>
>> But right now inject-nmi was a CPU-specific interface and whoever
>> needs something different will have to find a way.
>>
>> You could argue that Alexey does need something different thanks to
>> his need to inject the NMI on all CPUs.
>>
>> What about an NMIMonitorHandler interface that takes a Monitor*, and
>> then you iterate on all of /machine looking for implementors of the
>> interface?  Then -M mac99 can add it to the MPIC, -M spapr can just
>> ignore the Monitor*, and i386/s390 can look at the current CPU.
>
> I think modeling a button is easier and closer to what you'd actually
> get on real hardware.

What is a button?  It certainly doesn't have any evdev support in Linux.

The NMI button is just something that closes a circuit.  Whoever is 
attached to that circuit reacts, in QEMU that's whoever implements an 
NMIMonitorHandler.  The Monitor* is just for backwards HMP compatibility.

Paolo

  reply	other threads:[~2014-06-11  8:37 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 [this message]
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
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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