From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH] kvm/fpu: Enable fully eager restore kvm FPU Date: Mon, 20 Aug 2012 13:43:10 +0300 Message-ID: <503214BE.8050706@redhat.com> References: <1345094044-28962-1-git-send-email-xudong.hao@intel.com> <502CB881.1040807@redhat.com> <403610A45A2B5242BD291EDAE8B37D300FE8AA17@SHSMSX102.ccr.corp.intel.com> <502CD276.7020403@redhat.com> <20120820092416.GB2582@amd.com> <50320C8E.6040109@redhat.com> <20120820101453.GF2582@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: "Hao, Xudong" , "kvm@vger.kernel.org" , "Zhang, Xiantao" To: "Roedel, Joerg" Return-path: Received: from mx1.redhat.com ([209.132.183.28]:2207 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751188Ab2HTKnT (ORCPT ); Mon, 20 Aug 2012 06:43:19 -0400 In-Reply-To: <20120820101453.GF2582@amd.com> Sender: kvm-owner@vger.kernel.org List-ID: On 08/20/2012 01:14 PM, Roedel, Joerg wrote: > On Mon, Aug 20, 2012 at 01:08:14PM +0300, Avi Kivity wrote: >> On 08/20/2012 12:24 PM, Roedel, Joerg wrote: > >> So it was broken all along? Yikes. > > There is no LWP support in the kernel and thus KVM can't expose it to > guests. So for now nothing should be broken, no? Oh, we mask out xcr0 bits not supported by the host. So it's broken in another way: it isn't exposed. Pity, it's such a nice feature. -- error compiling committee.c: too many arguments to function