Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763260AbZCQKsK (ORCPT ); Tue, 17 Mar 2009 06:48:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760042AbZCQKrz (ORCPT ); Tue, 17 Mar 2009 06:47:55 -0400 Received: from one.firstfloor.org ([213.235.205.2]:57145 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756774AbZCQKry (ORCPT ); Tue, 17 Mar 2009 06:47:54 -0400 Date: Tue, 17 Mar 2009 11:48:17 +0100 From: Andi Kleen To: Jan Beulich Cc: Andi Kleen , 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 Message-ID: <20090317104817.GO11935@one.firstfloor.org> 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> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <49BF6505.76E4.0078.0@novell.com> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 567 Lines: 13 > 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? -Andi -- 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/