[Libvirt] Attach qemu commands to an running xml domain

[Peter Krempa]

On Tue, Mar 30, 2021 at 11:49:51 +0000, Waleed Musa wrote:

Your reply email looks very broken, but I think I can find the relevant
parts:

> ________________________________
> From: Peter Krempa <pkrempa at redhat.com>
> Sent: Tuesday, March 30, 2021 01:42 PM
> To: Waleed Musa <waleedm at nvidia.com>
> Cc: libvir-list at redhat.com <libvir-list at redhat.com>; Moshe Levi <moshele at nvidia.com>; Adrian Chiris <adrianc at nvidia.com>
> Subject: Re: [Libvirt] Attach qemu commands to an running xml domain
> 
> External email: Use caution opening links or attachments
> 
> 
> On Tue, Mar 30, 2021 at 09:35:48 +0000, Waleed Musa wrote:

[...]

> >   2.  Is there a way or API to attach qemu commands to running domain as you are doing in attaching the device using  attachDeviceFlags?
> 
> No. For VMs which use <qemu:commandline> we don't formally provide
> support. I suggest that if you have a good use case for the attributes
> below, you send patches adding the functionality to libvirt if you want
> to have it on device hotplug.
> > We can't implement hot-plug

Can you elaborate why? If the options are justifiably useful and qemu
upstream supports them there's nothing preventing that.