From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:55576) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h1wCx-00053R-OG for qemu-devel@nongnu.org; Thu, 07 Mar 2019 11:49:24 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1h1wCw-0002yI-Pf for qemu-devel@nongnu.org; Thu, 07 Mar 2019 11:49:23 -0500 Received: from mx1.redhat.com ([209.132.183.28]:58822) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1h1wCw-0002xp-JA for qemu-devel@nongnu.org; Thu, 07 Mar 2019 11:49:22 -0500 Date: Thu, 7 Mar 2019 16:49:11 +0000 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Message-ID: <20190307164911.GI32268@redhat.com> Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= References: <20190307072253.9868-1-elena.ufimtseva@oracle.com> <20190307142609.GF2843@stefanha-x1.localdomain> <20190307145120.GF32268@redhat.com> <20190307110441-mutt-send-email-mst@kernel.org> <20190307161944.GH32268@redhat.com> <20190307113538-mutt-send-email-mst@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20190307113538-mutt-send-email-mst@kernel.org> Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] [multiprocess RFC PATCH 36/37] multi-process: add the concept description to docs/devel/qemu-multiprocess List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Michael S. Tsirkin" Cc: Stefan Hajnoczi , elena.ufimtseva@oracle.com, john.g.johnson@oracle.com, sstabellini@kernel.org, jag.raman@oracle.com, konrad.wilk@oracle.com, qemu-devel@nongnu.org, ross.lagerwall@citrix.com, liran.alon@oracle.com, stefanha@redhat.com, kanth.ghatraju@oracle.com On Thu, Mar 07, 2019 at 11:46:19AM -0500, Michael S. Tsirkin wrote: > On Thu, Mar 07, 2019 at 04:19:44PM +0000, Daniel P. Berrang=C3=A9 wrote= : > > On Thu, Mar 07, 2019 at 11:05:36AM -0500, Michael S. Tsirkin wrote: > > > On Thu, Mar 07, 2019 at 02:51:20PM +0000, Daniel P. Berrang=C3=A9 w= rote: > > > > The broadening of vhost-user support is useful with that in much = the > > > > same way I imagine. > > >=20 > > > vhost user has more of an impact but is also a bigger maintainance > > > burden as clients are packaged, can be restarted etc individually. > >=20 > > It feels like we're having/accepted that cost already though since > > vhostuser exists today & has been expanding to cover more backends. >=20 > What I am trying to say is that we could eaily add support for > extensions just for in-tree code since these don't create an API that > needs to be maintained. >=20 > So e.g. we do not need feature negotiation. Ah, I see what you mean now. Having stuff in-tree makes migration saner too since we don't have combinatorial expansion of impls to worry about testnig > But yes, this could be an extension of vhost-user in some way. Regards, Daniel --=20 |: https://berrange.com -o- https://www.flickr.com/photos/dberran= ge :| |: https://libvirt.org -o- https://fstop138.berrange.c= om :| |: https://entangle-photo.org -o- https://www.instagram.com/dberran= ge :|