Re: [Qemu-devel] Default CPU for NMI injection (QMP and IPMI)

[Corey Minyard]

On 09/21/2016 03:20 PM, Eduardo Habkost wrote:
> Hi,
>
> I was looking at the monitor code handling the "current CPU", and
> noticed that qmp_inject_nmi() looks suspicious: it is a QMP
> command, but uses monitor_get_cpu_index().
>
> In addition to the "inject-nmi" QMP command, qmp_inject_nmi() is
> used at:
> * hmp_inject_nmi()
> * ipmi_do_hw_op() (IPMI_SEND_NMI operation)
>
> This confused me, so I would like to know:
>
> 1) What exactly "default CPU" is supposed to mean in the
>     "inject-nmi" QMP command documentation?
> 2) To which CPU(s) are NMIs supposed to be sent when triggered by
>     IPMI messages? I don't know how to test the IPMI code, but it
>     looks like it will crash if QEMU runs without any monitor.
It doesn't matter which CPU it goes to.

I haven't tested without a monitor, so I'm not sure.  Does
another interface into the NMI code need to be added?

-corey