From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=51471 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Oh241-0004l5-SB for qemu-devel@nongnu.org; Thu, 05 Aug 2010 11:09:10 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1Oh23g-0004b4-5Y for qemu-devel@nongnu.org; Thu, 05 Aug 2010 11:08:56 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55866) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1Oh23f-0004Us-RS for qemu-devel@nongnu.org; Thu, 05 Aug 2010 11:08:36 -0400 Message-ID: <4C5A6839.2070700@redhat.com> Date: Thu, 05 Aug 2010 09:28:57 +0200 From: Gerd Hoffmann MIME-Version: 1.0 Subject: Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35? References: <20100803190525.GB16570@redhat.com> <4C586AB9.5040302@codemonkey.ws> <4C586CF9.7030206@redhat.com> <4C588804.5060803@redhat.com> <4C590046.2020705@redhat.com> <4C591D48.9080301@redhat.com> <4C592218.3000901@redhat.com> <4C596549.1070109@codemonkey.ws> <20100804130709.GL10499@redhat.com> <4C5967D8.7080707@codemonkey.ws> <20100804133401.GP10499@redhat.com> <4C5970AC.6060105@codemonkey.ws> <4C5995B4.90505@redhat.com> <4C5996F4.6010205@redhat.com> <4C5998F1.4030001@codemonkey.ws> In-Reply-To: <4C5998F1.4030001@codemonkey.ws> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Anthony Liguori Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, Avi Kivity , Gleb Natapov , "Richard W.M. Jones" Hi, > The option rom stuff has a number of short comings. Because we hijack > int19, extboot doesn't get to run. That means that if you use -kernel to > load a grub (the Ubuntu guys for their own absurd reasons) then grub > does not see extboot backed disks. The solution for them is the same, > generate a proper disk and boot from that disk. Oh, having extboot + linuxboot + multiboot register a BEV (correct acronym?) entry instead of hijacking int19 would fix that too. Additional bonus will be that they are selectable in the boot menu. cheers, Gerd