From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: KVM causes #GP on XRSTORS Date: Fri, 21 Nov 2014 19:34:13 +0100 Message-ID: <546F85A5.9070605@redhat.com> References: <546F505F.9080309@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: kvm list , Eduardo Habkost To: kvm@vger.kernel.org Return-path: Received: from plane.gmane.org ([80.91.229.3]:49908 "EHLO plane.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751152AbaKUSe0 (ORCPT ); Fri, 21 Nov 2014 13:34:26 -0500 Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1Xrt2G-0001eN-RS for kvm@vger.kernel.org; Fri, 21 Nov 2014 19:34:24 +0100 Received: from net-93-146-133-240.cust.vodafonedsl.it ([93.146.133.240]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 21 Nov 2014 19:34:24 +0100 Received: from pbonzini by net-93-146-133-240.cust.vodafonedsl.it with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 21 Nov 2014 19:34:24 +0100 In-Reply-To: <546F505F.9080309@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On 21/11/2014 15:46, Paolo Bonzini wrote: > Fenghua, which processors have XSAVEC, which have XGETBV with ECX=1, and > which have XSAVES? We need to expose this in QEMU, for which I can send > a patch later today or next week (CCing Eduardo for this). Actually no change in QEMU is needed to hide XSAVES; the KVM patch I just sent should be enough for "-cpu host" to work. We still need the information on processor support though, in order to enable the feature with the right -cpu options. I assume Nadav was using "-cpu host". Paolo