From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:54308) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TJOs4-0000nS-Eg for qemu-devel@nongnu.org; Wed, 03 Oct 2012 09:20:22 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TJOru-0002Y6-UK for qemu-devel@nongnu.org; Wed, 03 Oct 2012 09:20:16 -0400 Received: from mail-pb0-f45.google.com ([209.85.160.45]:57610) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TJOru-0002Vv-OA for qemu-devel@nongnu.org; Wed, 03 Oct 2012 09:20:06 -0400 Received: by pbbrp2 with SMTP id rp2so9987642pbb.4 for ; Wed, 03 Oct 2012 06:20:05 -0700 (PDT) Sender: Paolo Bonzini Message-ID: <506C3B7C.408@redhat.com> Date: Wed, 03 Oct 2012 15:19:56 +0200 From: Paolo Bonzini MIME-Version: 1.0 References: <20120930191146.GA20012@amt.cnet> <50694EC1.8060006@siemens.com> <20121001093102.GA14797@amt.cnet> <50696E9E.7030302@siemens.com> <87zk468h3y.fsf@codemonkey.ws> <506999ED.6010409@siemens.com> <20121003095532.GO23096@redhat.com> <506C1A1D.4020209@redhat.com> In-Reply-To: <506C1A1D.4020209@redhat.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] qemu-kvm: remove "boot=on|off" drive parameter compatibility List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Lucas Meneghel Rodrigues Cc: Gleb Natapov , kvm , Scott Moser , Jan Kiszka , Marcelo Tosatti , Michael Tokarev , qemu-devel , Anthony Liguori , Cole Robinson , =?ISO-8859-1?Q?Andreas_F=E4rber?= Il 03/10/2012 12:57, Lucas Meneghel Rodrigues ha scritto: > Yep, I did send patches with the testdev device present on qemu-kvm.git > to qemu.git a while ago, but there were many comments on the review, I > ended up not implementing everything that was asked and the patches were > archived. > > If nobody wants to step up to port it, I'll re-read the original thread > and will spin up new patches (and try to go through the end with it). > Executing the KVM unittests is something that we can't afford to lose, > so I'd say it's important on this last mile effort to get rid of qemu-kvm. Absolutely, IIRC the problem was that testdev did a little bit of everything... let's see what's the functionality of testdev: - write (port 0xf1), can be replaced in autotest with: -device isa-debugcon,iobase=0xf1,chardev=... - exit code (port 0xf4), see this series: http://lists.gnu.org/archive/html/qemu-devel/2012-07/msg00818.html - ram size (port 0xd1). If we can also patch kvm-unittests, the memory is available in the CMOS or in fwcfg. Here is the SeaBIOS code: u32 rs = ((inb_cmos(0x34) << 16) | (inb_cmos(0x35) << 24)); if (rs) rs += 16 * 1024 * 1024; else rs = (((inb_cmos(0x30) << 10) | (inb_cmos(0x31) << 18)) + 1 * 1024 * 1024); The rest (ports 0xe0..0xe7, 0x2000..0x2017, MMIO) can be left in testdev. Paolo