From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=37710 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PkJSL-0008D3-BF for qemu-devel@nongnu.org; Tue, 01 Feb 2011 11:51:57 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PkJDE-0002Bz-Ih for qemu-devel@nongnu.org; Tue, 01 Feb 2011 11:36:24 -0500 Received: from thoth.sbs.de ([192.35.17.2]:18782) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PkJDE-00029G-8I for qemu-devel@nongnu.org; Tue, 01 Feb 2011 11:36:16 -0500 Message-ID: <4D48367D.2060802@siemens.com> Date: Tue, 01 Feb 2011 17:36:13 +0100 From: Jan Kiszka MIME-Version: 1.0 References: <20110201155414.GF28968@x200.localdomain> In-Reply-To: <20110201155414.GF28968@x200.localdomain> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] Re: KVM call minutes for Feb 1 List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Chris Wright Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org On 2011-02-01 16:54, Chris Wright wrote: > KVM upstream merge: status, plans, coordination > - Jan has a git tree, consolidating > - qemu-kvm io threading is still an issue > - Anthony wants to just merge > - concerns with non-x86 arch and merge > - concerns with big-bang patch merge and following stability > - post 0.14 conversion to glib mainloop, non-upstreamed qemu-kvm will be > a problem if it's not there by then > - testing and nuances are still an issue (e.g. stefan berger's mmio read issue) > - qemu-kvm still evolving, needs to get sync'd or it will keep diverging > - 2 implementations of main init, cpu init, Jan has merged them into one > - qemu-kvm-x86.c file that's only a few hundred lines > - review as one patch to see the fundamental difference More precisely, my current work flow is to pick some function(s), e.g. kvm_cpu_exec/kvm_run, and start wondering "What needs to be done to upstream so that qemu-kvm could use that implementation?". If they differ, the reasons need to be understood and patched away, either by fixing/enhancing upstream or simplifying qemu-kvm. Once the upstream changes are merged back, a qemu-kvm patch is posted to switch to that version. Any help will be welcome, either via review of my subtle regressions or on resolving concrete differences. E.g. posix-aio-compat.c: Why does qemu-kvm differ here? If it's because of its own iothread code, can we wrap that away or do we need to consolidate the threading code first? Or do we need to fix something in upstream? Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux