Re: [Qemu-devel] [PATCH v2] virtio: introduce `info virtio' hmp command

[Cornelia Huck]

On Thu, 28 Sep 2017 12:02:35 +0200
Kevin Wolf <address@hidden> wrote:

> Am 28.09.2017 um 01:05 hat Jan Dakinevich geschrieben:
> > > OK but if it's useful as an hmp command, why not as a qmp command?  
> > 
> > The command is designed for debugging and produces quite sightly output. For
> > respective qmp command most of `info virtio' output would excessive and
> > unneccesary.  
> 
> The general policy is that HMP commands should only call QMP command
> implementations internally rather than doing things themselves, to make
> sure that a management tool can achieve everything the monitor provides
> with QMP and doesn't have to fall back to parsing HMP output.
> 
> If we are certain that this feature is useless for automated use and
> nobody will ever want to use it in scripts (sounds like a bold claim to
> me), maybe an exception can be justified. I think this is up to the
> monitor maintainers.

Having a way to get at things like virtio status might be useful (for
example, noticing if a device has NEEDS_RESET set).