From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43254) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ehFTR-0000bA-RD for qemu-devel@nongnu.org; Thu, 01 Feb 2018 09:04:27 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ehFTL-0007j0-V5 for qemu-devel@nongnu.org; Thu, 01 Feb 2018 09:04:21 -0500 Received: from mail-wm0-x242.google.com ([2a00:1450:400c:c09::242]:39394) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1ehFTL-0007ie-MD for qemu-devel@nongnu.org; Thu, 01 Feb 2018 09:04:15 -0500 Received: by mail-wm0-x242.google.com with SMTP id b21so5892269wme.4 for ; Thu, 01 Feb 2018 06:04:15 -0800 (PST) Date: Thu, 1 Feb 2018 15:04:11 +0100 From: Christoffer Dall Message-ID: <20180201140411.GD21802@cbox> References: <20180201104222.bwbrsfp2kmkwd7zp@kamzik.brq.redhat.com> <20180201104831.GB21802@cbox> <20180201122520.b2o75bmjaqwukuqs@kamzik.brq.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180201122520.b2o75bmjaqwukuqs@kamzik.brq.redhat.com> Subject: Re: [Qemu-devel] [PATCH V1 1/1] tests: Add migration test for aarch64 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Andrew Jones Cc: Wei Huang , Peter Maydell , Ard Biesheuvel , Marc Zyngier , Juan Quintela , QEMU Developers , "Dr. David Alan Gilbert" On Thu, Feb 01, 2018 at 01:25:20PM +0100, Andrew Jones wrote: > On Thu, Feb 01, 2018 at 11:48:31AM +0100, Christoffer Dall wrote: > > On Thu, Feb 01, 2018 at 11:42:22AM +0100, Andrew Jones wrote: > > > On Thu, Feb 01, 2018 at 10:59:54AM +0100, Christoffer Dall wrote: > > > > On Thu, Feb 1, 2018 at 10:33 AM, Ard Biesheuvel > > > > > If you could use dirty page tracking to only perform the cache > > > > > invalidation when the framebuffer memory has been updated, you can at > > > > > least limit the impact to cases where the framebuffer is actually > > > > > used, rather than sitting idle with a nice wallpaper image. > > > > > > Yes, this is the exact approach I took back when I experimented with > > > this. I must have screwed up my PoC in some way (like using the gcc > > > builtin), because it wasn't working for me... > > > > > Does that mean you have some code you feel like reviving and use to send > > out an RFC based on? ;) > > > > I don't usually delete things, but I do do some sort of copy on use > from old homedirs to new ones from time to time, letting stuff that > gets really old completely drop at some point. I might be able to > find the old work, or just hack a quick and ugly version from my > memory to share - hopefully whatever I did to cause it to fail last > time has been forgotten :-) > If you have bandwidth to look at this that's great. Otherwise let us know, and I'll see if I can devote some time to it. Thanks, -Christoffer