From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [Qemu-devel] expose host CPU features to guests: Take 3 Date: Tue, 25 Sep 2007 15:13:40 +0200 Message-ID: <46F90984.1010201@qumranet.com> References: <20070905174530.GA3945@karma.qumranet.com> <1190711970.30193.15.camel@rapid> <46F8D577.3020306@qumranet.com> <200709251351.55481.paul@codesourcery.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel , "J. Mayer" , qemu-devel-qX2TKyscuCcdnm+yROfE0A@public.gmane.org To: Paul Brook Return-path: In-Reply-To: <200709251351.55481.paul-qD8j1LwMmJjtCj0u4l0SBw@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org Paul Brook wrote: >> Indeed for regular qemu this is useless. But it is useful for kqemu >> (for which there is support in mainline qemu), and for kvm (which we >> hope to merge one day). >> > > And, as discussed before, it should be asking the hypervisor what features it > supports instead of trying to guess from the cpuid output. > Agreed. -- Any sufficiently difficult bug is indistinguishable from a feature. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/