From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH] x86/HVM: hide features dependent on XSAVE when booted with "no-xsave" Date: Fri, 27 Nov 2015 17:18:58 +0000 Message-ID: <56589082.5000303@citrix.com> References: <5658478B02000078000B9A3E@prv-mh.provo.novell.com> <56587E24.4050209@citrix.com> <56589C9E02000078000B9DC1@prv-mh.provo.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1a2Mfp-00073a-Bo for xen-devel@lists.xenproject.org; Fri, 27 Nov 2015 17:19:05 +0000 In-Reply-To: <56589C9E02000078000B9DC1@prv-mh.provo.novell.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Jan Beulich Cc: xen-devel , Keir Fraser List-Id: xen-devel@lists.xenproject.org On 27/11/15 17:10, Jan Beulich wrote: >>>> On 27.11.15 at 17:00, wrote: >> It is also odd to see it added to HVM guests but not PV. > But that's a result of PV using white listing on leaf 7, as opposed to > HVM's black listing. > > But yes, if you CPUID series is about to arrive, these two patches > may not be worthwhile to commit. I've put them together because > of noticing the dependency issue, and knowing only that you've > been talking for a while about your plans, without it being clear > when they would land. I will post an RFC once I get some testing on my msr mask context switching logic. ~Andrew