From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:34375) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Qja0b-0003QM-UU for qemu-devel@nongnu.org; Wed, 20 Jul 2011 12:52:31 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Qja0a-000597-5r for qemu-devel@nongnu.org; Wed, 20 Jul 2011 12:52:29 -0400 Received: from mx1.redhat.com ([209.132.183.28]:34198) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Qja0Z-00058y-EG for qemu-devel@nongnu.org; Wed, 20 Jul 2011 12:52:27 -0400 Message-ID: <4E2707C6.7060603@redhat.com> Date: Wed, 20 Jul 2011 19:52:22 +0300 From: Avi Kivity MIME-Version: 1.0 References: <4E25B85C.1030809@siemens.com> <4E25BB7A.7030105@redhat.com> <4E25BF26.6080900@siemens.com> <4E268E20.5050807@redhat.com> <4E26BF77.7070705@siemens.com> <4E26C290.8010604@redhat.com> <4E26DECC.9000700@siemens.com> <4E26E716.2090109@redhat.com> <20110720143720.GC6787@redhat.com> <4E26EC22.1030309@redhat.com> <20110720161018.GB8077@redhat.com> In-Reply-To: <20110720161018.GB8077@redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [RFC v4 00/58] Memory API List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Michael S. Tsirkin" Cc: Jan Kiszka , "qemu-devel@nongnu.org" , "kvm@vger.kernel.org" On 07/20/2011 07:10 PM, Michael S. Tsirkin wrote: > > and vga could do it if the vnc display > > is disconnected, or if the update rate is so high it can just assume > > all memory is dirty. > > Yes, but it's not something *devices* should be doing. No one knows about the frame buffer except the vga device. > > >What devices seem to need, instead, is enable/disable a region > > >through a back channel. > > > > What do you mean? > > At least for qxl, all it seems to do is enable/disable > logging when the region is enabled disabled. > I'm not sure I follow what does vmware do - something > similar only with a custom register instead of > the standard memory enable? pv vga like vmware and qxl disables logging when the pv interface is active. -- error compiling committee.c: too many arguments to function