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Date: Mon, 3 Jan 2011 11:46:52 -0200
From: Luiz Capitulino <lcapitulino@redhat.com>
Subject: Re: [Qemu-devel] Re: [PATCH v3] qemu, qmp: convert do_inject_nmi()
	to QObject, QError
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To: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: qemu-devel@nongnu.org, aliguori@us.ibm.com, Avi Kivity <avi@redhat.com>, kvm@vger.kernel.org, Markus Armbruster <armbru@redhat.com>

On Mon, 20 Dec 2010 14:09:05 +0800
Lai Jiangshan <laijs@cn.fujitsu.com> wrote:

> On 12/17/2010 11:25 PM, Avi Kivity wrote:
> > On 12/17/2010 01:22 PM, Luiz Capitulino wrote:
> >> >
> >> >  I think Avi's suggest is better, and I will use
> >> >  "inject-nmi" (without cpu-index argument) to send NMI to all cpus,
> >> >  like physical GUI. If some one want to send NMI to a set of cpus,
> >> >  he can use "inject-nmi" multiple times.
> >>
> >> His suggestion is to drop _all_ arguments, right Avi?
> > 
> > Yes.
> > 
> 
> We don't need to drop the cpu-index argument,
> the upstream tools(libvirt etc.) can just issue "inject-nmi"
> command without any argument when need.
> 
> Reasons to keep this argument
> 1) Useful for kernel developer or debuger sending NMI to a special CPU.

Ok.

> 2) Share the code with nmi of hmp version. Share the way how to
>    use these two commands.(hmp version and qmp version)

This is bad. As a general rule, we shouldn't tweak QMP interfaces with
the intention of sharing code with HMP or anything like that.

Anyway, I buy your first argument, although I'm not a kernel developer
so I'm just trusting your use case.