Re: VFIO Migration

[Stefan Hajnoczi]

On Thu, Nov 05, 2020 at 07:47:24AM +0100, Gerd Hoffmann wrote:
> > > > Yes. If you are creating a custom device that no one else needs to
> > > > emulate then you can simply pick a unique URL:
> > > > 
> > > >   https://vendor.com/my-dev
> > > > 
> > > > There doesn't need to be anything at the URL. It's just a unique string
> > > > that no one else will use and therefore web URLs are handy because no
> > > > one else will accidentally pick your string.
> > > 
> > > If this is just a string I think it would be better to use the reverse
> > > domain name scheme (as used by virtio-serial too), i.e.
> > > 
> > >  - org.qemu.devices.e1000e
> > >  - com.vendor.my-dev
> > 
> > This is the Java syntax.
> 
> I think both android and ios use that too, for app naming (but maybe that
> comes from java).
> 
> > Go uses gitlab.com/my-user/foo and I think it's
> > nicer but I think I'm bikeshedding.
> > 
> > Is there any particular reason why you prefer the reverse domain name
> > approach?
> 
> Having "https://"; at the start is odd, especially if we don't require
> that the given URL returns something useful.  Other that that I don't
> mind that much whenever we use go-style or java-style strings, with a
> slight preference for the latter for consistency with virtio-serial.

Thanks for explaining. We can discuss the exact format in the next
revision if there are opinions.

Stefan

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