On Mon, Oct 29, 2018 at 10:12:44AM +0100, Gerd Hoffmann wrote: > On Thu, Oct 25, 2018 at 09:37:58PM +0100, Daniel P. Berrangé wrote: > > On Thu, Oct 25, 2018 at 10:52:56AM +0200, Gerd Hoffmann wrote: > > > While being at it deprecate cirrus too. > > > > > > Reason (short version): use stdvga instead. > > > Verbose version: > > > https://www.kraxel.org/blog/2014/10/qemu-using-cirrus-considered-harmful > > > > Every single one of my guests is using cirrus. This wasn't an explicit > > choice on my part, so I believe it is being used as the default in > > virt-install. > > > > I don't debate the points in the blog post above that stdvga is a > > better choice, but I don't think that's enough to justify deprecating > > cirrus at this point in time, because when it then gets deleted it > > will break way too many existing deployments. > > > > We need to socialize info in that blog post above more widely and > > especially ensure that apps are not using that by default. I don't > > see it being viable to formally deprecate it in QEMU any time soon > > though given existing usage. > > Well, getting that message to the users is the point of deprecating it. > I think in this specific case we'll need a longer (maybe much longer) > deprecation period than only two releases. But I think it still makes > sense to deprecate it now. As mentioned elsewhere in this thread, I think it is important that QEMU distinction between devices that are best practice / recommended for use with KVM virt, vs devices that exist solely for sake of emulating hardware for use with old platforms. I agree that cirrus doesn't have a place in a KVM guest for future, but I don't thjink that means it should be deprecated & removed from QEMU entirely, as its still relevant from POV of QEMU's goal to emulate old hardware platforms. Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :| -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list
