From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2992816AbXCCAwd (ORCPT ); Fri, 2 Mar 2007 19:52:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S2992817AbXCCAwd (ORCPT ); Fri, 2 Mar 2007 19:52:33 -0500 Received: from x35.xmailserver.org ([64.71.152.41]:3199 "EHLO x35.xmailserver.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2992816AbXCCAwc (ORCPT ); Fri, 2 Mar 2007 19:52:32 -0500 X-AuthUser: davidel@xmailserver.org Date: Fri, 2 Mar 2007 16:52:29 -0800 (PST) From: Davide Libenzi X-X-Sender: davide@alien.or.mcafeemobile.com To: Nicholas Miell cc: Ingo Molnar , Linux Kernel Mailing List , Arjan van de Ven , Linus Torvalds Subject: Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3 In-Reply-To: <1172871820.2999.22.camel@entropy> Message-ID: References: <20070301133018.GB30177@2ka.mipt.ru> <200703011519.20001.dada1@cosmosbay.com> <20070301141637.GA20006@elte.hu> <20070301145454.GB12684@2ka.mipt.ru> <20070301150942.GA26025@elte.hu> <20070301153655.GB8217@2ka.mipt.ru> <20070302105713.GB15576@elte.hu> <20070302193941.GB8450@elte.hu> <20070302202931.GA5101@elte.hu> <1172871820.2999.22.camel@entropy> X-GPG-FINGRPRINT: CFAE 5BEE FD36 F65E E640 56FE 0974 BF23 270F 474E X-GPG-PUBLIC_KEY: http://www.xmailserver.org/davidel.asc MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2 Mar 2007, Nicholas Miell wrote: > The point Ingo was making is that the x86 ABI already requires the FPU > context to be saved before *all* function calls. I've not seen that among Ingo's points, but yeah some status is caller saved. But, aren't things like status word and control bits callee saved? If that's the case, it might require proper handling. - Davide