Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763367AbZCQKzA (ORCPT ); Tue, 17 Mar 2009 06:55:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753222AbZCQKyw (ORCPT ); Tue, 17 Mar 2009 06:54:52 -0400 Received: from vpn.id2.novell.com ([195.33.99.129]:32168 "EHLO vpn.id2.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752719AbZCQKyv convert rfc822-to-8bit (ORCPT ); Tue, 17 Mar 2009 06:54:51 -0400 Message-Id: <49BF8FB7.76E4.0078.0@novell.com> X-Mailer: Novell GroupWise Internet Agent 8.0.0 Date: Tue, 17 Mar 2009 10:55:35 +0000 From: "Jan Beulich" To: "Andi Kleen" Cc: "Jeremy Fitzhardinge" , "Jeremy Fitzhardinge" , "Arjan van de Ven" , "the arch/x86 maintainers" , "Xen-devel" , "Linux Kernel Mailing List" , "H. Peter Anvin" Subject: Re: [Xen-devel] [PATCH 10/24] xen: mask XSAVE from cpuid References: <1236931920-6861-11-git-send-email-jeremy@goop.org> <49BA3A84.76E4.0078.0@novell.com> <49BA7810.6090807@goop.org> <49BD4CE1.6040100@zytor.com> <49BD6D0E.1010107@goop.org> <20090315154718.00353625@infradead.org> <49BD97C6.2070401@goop.org> <20090315170945.08344b86@infradead.org> <87fxhd2f53.fsf@basil.nowhere.org> <49BF6505.76E4.0078.0@novell.com> <20090317104817.GO11935@one.firstfloor.org> In-Reply-To: <20090317104817.GO11935@one.firstfloor.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8BIT Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 701 Lines: 17 >>> Andi Kleen 17.03.09 11:48 >>> >> No, properly coded xsave support will (hopefully) make user-visible context >> extensions transparent to hypervisor and OS. But I was giving a general >> example here, and the change from xmm to ymm registers is one that does >> need hypervisor (and OS) changes. > >Again except for XSAVE support it doesn't, does it? No, it shouldn't (minus the valid comments hpa added in another reply). Jan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/