[libvirt] [PATCH 4/8] conf: domaincaps: Add 'iothreads' to the features section

Peter Krempa pkrempa at redhat.com
Thu Nov 14 13:08:13 UTC 2019

On Thu, Nov 14, 2019 at 12:59:00 +0100, Peter Krempa wrote:
> On Thu, Nov 14, 2019 at 12:55:40 +0100, Ján Tomko wrote:
> > On Wed, Nov 13, 2019 at 05:05:22PM +0100, Peter Krempa wrote:
> > > Historically iothreads were the first feature and thus didn't have it's
> > > own section. Add them to <features> for consistency with other features.
> > > 
> > 
> > I'm not convinced duplicating this is a good idea - apps looking into
> > the <features> element for iothread support would only find it with
> > libvirt new enough to have it there and miss out on iothread support
> > with older libvirt.
> I certainly can keep 'iothreads' separate. I'm definitely not going to
> add an special case into the formatter to avoid formatting it there.
> Also to be fair I'm not sure whether it's worth caring about the
> outlined scenario. If an APP looks for iothreads in <features> it should
> not be used with older libvirt than the one where it was added.
> At any rate, I can drop this patch and keep the iothreads stuff
> separate.

Also any new app will have to write two lookup XPaths to get all the
data as it's now rather than having everything in one place.

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