From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=53221 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Ogddm-0003sm-3H for qemu-devel@nongnu.org; Wed, 04 Aug 2010 09:04:15 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1Ogddk-0001NW-Gw for qemu-devel@nongnu.org; Wed, 04 Aug 2010 09:04:13 -0400 Received: from mail-qy0-f180.google.com ([209.85.216.180]:46653) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1Ogddk-0001NM-ED for qemu-devel@nongnu.org; Wed, 04 Aug 2010 09:04:12 -0400 Received: by qyk31 with SMTP id 31so2124597qyk.4 for ; Wed, 04 Aug 2010 06:04:11 -0700 (PDT) Message-ID: <4C596549.1070109@codemonkey.ws> Date: Wed, 04 Aug 2010 08:04:09 -0500 From: Anthony Liguori MIME-Version: 1.0 Subject: Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35? References: <20100803162857.GX13789@amd.home.annexia.org> <4C584781.9040609@redhat.com> <4C5847CD.9080107@codemonkey.ws> <4C5848C7.3090806@redhat.com> <4C584982.5000108@codemonkey.ws> <4C584B66.5070404@redhat.com> <4C5854F1.3000905@codemonkey.ws> <4C5858B2.9090801@redhat.com> <4C585F5B.5070502@codemonkey.ws> <4C58635B.7020407@redhat.com> <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> In-Reply-To: <4C592218.3000901@redhat.com> 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: Avi Kivity Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, Gerd Hoffmann , Gleb Natapov , "Richard W.M. Jones" On 08/04/2010 03:17 AM, Avi Kivity wrote: > For playing games, there are three options: > - existing fwcfg > - fwcfg+dma > - put roms in 4GB-2MB (or whatever we decide the flash size is) and > have the BIOS copy them > > Existing fwcfg is the least amount of work and probably satisfactory > for isapc. fwcfg+dma is IMO going off a tangent. High memory flash > is the most hardware-like solution, pretty easy from a qemu point of > view but requires more work. The only trouble I see is that high memory isn't always available. If it's a 32-bit PC and you've exhausted RAM space, then you're only left with the PCI hole and it's not clear to me if you can really pull out 100mb of space there as an option ROM without breaking something. Regards, Anthony Liguori