From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1IUOfp-0003tJ-75 for qemu-devel@nongnu.org; Sun, 09 Sep 2007 11:26:09 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1IUOfn-0003sD-O7 for qemu-devel@nongnu.org; Sun, 09 Sep 2007 11:26:08 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1IUOfn-0003ru-Ch for qemu-devel@nongnu.org; Sun, 09 Sep 2007 11:26:07 -0400 Received: from mail.codesourcery.com ([65.74.133.4]) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1IUOfm-0006eG-Tb for qemu-devel@nongnu.org; Sun, 09 Sep 2007 11:26:07 -0400 From: Paul Brook Subject: Re: [kvm-devel] [Qemu-devel] Re: expose host CPU features to guests Date: Sun, 9 Sep 2007 16:25:57 +0100 References: <20070905174530.GA3945@karma.qumranet.com> <46E3ED2B.6080606@qumranet.com> <20070909130725.GF24240@mail.shareable.org> In-Reply-To: <20070909130725.GF24240@mail.shareable.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200709091625.59859.paul@codesourcery.com> Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kvm-devel On Sunday 09 September 2007, Jamie Lokier wrote: > Avi Kivity wrote: > > Let's start with '-cpu host' as 'cpu host-cpuid' and implement '-cpu > > host-os' on the first bug report? I have a feeling we won't ever see it. > > In other words, host-os is what _I'd_ implement because I care too > much about the poor obscure users and think it's the safe option, but > I'm not doing the implementing here ;-) I agree. If the host OS has disabled a feature, it's a fair bet it's done that for a reason. What you really want to do is ask your virtualization module what features it supports. Paul