From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:58815) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TCE8h-0000lA-1P for qemu-devel@nongnu.org; Thu, 13 Sep 2012 14:27:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TCE8f-00071O-VZ for qemu-devel@nongnu.org; Thu, 13 Sep 2012 14:27:46 -0400 Received: from mail-ob0-f173.google.com ([209.85.214.173]:38689) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TCE8f-00071H-QS for qemu-devel@nongnu.org; Thu, 13 Sep 2012 14:27:45 -0400 Received: by obbta14 with SMTP id ta14so4646177obb.4 for ; Thu, 13 Sep 2012 11:27:45 -0700 (PDT) From: Anthony Liguori In-Reply-To: <50520189.3050707@redhat.com> References: <87pq5r5otp.fsf@codemonkey.ws> <20120912151549.GT20907@redhat.com> <87y5kfrtne.fsf@codemonkey.ws> <20120913104940.GA20907@redhat.com> <5051DC20.4090204@redhat.com> <20120913132804.GO7767@redhat.com> <87r4q6xbiy.fsf@codemonkey.ws> <20120913142228.GK20907@redhat.com> <5051EF0D.4070109@redhat.com> <5051F0CB.9040303@redhat.com> <5051FE85.6070904@redhat.com> <87har1orbl.fsf@codemonkey.ws> <50520189.3050707@redhat.com> Date: Thu, 13 Sep 2012 13:27:40 -0500 Message-ID: <87627h7p7n.fsf@codemonkey.ws> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Subject: Re: [Qemu-devel] Rethinking missed tick catchup List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Avi Kivity Cc: Gleb Natapov , Jan Kiszka , Michael Roth , qemu-devel@nongnu.org, Paolo Bonzini , Luiz Capitulino , Eric Blake Avi Kivity writes: > On 09/13/2012 06:50 PM, Anthony Liguori wrote: >>>> >>>>> This may not work for really old server oriented guests. >>>> >>>> S3 requires guest cooperation, period. But so does qemu-ga. It's >>>> better than nothing, and we can't get perfection without guest cooperation. >>> >>> qemu-ga requires either an admin/tool to install qemu-ga, or for qemu-ga >>> to be preinstalled by the OS vendor. S3 requires S3 support to be >>> provided by the host vendor, and for it to be functional. A >>> significantly easier bar to clear. >> >> We can easily generate an ISO that includes a pre-built version of >> qemu-ga. > > We could easily generate water, but we can't make the horse drink it. > >> >> Plus, there's a whole variety of other features enabled once we can >> assume qemu-ga is available. It's worth solving that problem. > > We can't assume it. Too many OSes exist, too many guests are already > exist and ain't broken, too many vendors are moving into a locked-down > model. I agree it's great and we should take advantage of it, but we > can't assume it's there. All the same can be said about virtio yet we still add features that depend on it. If there was a better/equivalent solution that didn't depend on qemu-ga, I'd be all for it. But there isn't AFAICT. Regards, Anthony Liguori > > -- > error compiling committee.c: too many arguments to function