From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756357AbYAOBeY (ORCPT ); Mon, 14 Jan 2008 20:34:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754098AbYAOBeQ (ORCPT ); Mon, 14 Jan 2008 20:34:16 -0500 Received: from koto.vergenet.net ([210.128.90.7]:42096 "EHLO koto.vergenet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752173AbYAOBeP (ORCPT ); Mon, 14 Jan 2008 20:34:15 -0500 Date: Tue, 15 Jan 2008 10:34:10 +0900 From: Simon Horman To: Ian Campbell Cc: Vivek Goyal , "Huang, Ying" , "Eric W. Biederman" , Andrew Morton , linux-kernel@vger.kernel.org, Magnus Damm Subject: Re: [PATCH -mm 1/2] kexec/i386: kexec page table code clean up - add arch_kimage Message-ID: <20080115013409.GB7969@verge.net.au> References: <1199847467.8126.15.camel@caritas-dev.intel.com> <20080110011423.GB23143@redhat.com> <20080110081535.GA30505@verge.net.au> <1200317376.11020.9.camel@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1200317376.11020.9.camel@localhost.localdomain> User-Agent: Mutt/1.5.17 (2007-12-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jan 14, 2008 at 01:29:36PM +0000, Ian Campbell wrote: > > On Thu, 2008-01-10 at 17:15 +0900, Simon Horman wrote: > > > Have you tested Xen too? Does it run into issues with this change? > > > > Xen will need to be updated for this change but it shouldn't be a big > > deal. Basically right now it calls __ma() (which is kind of like __pa()) > > on kexec_pgd and friends. Updating the arguments to __ma() to use > > the new arch_kimage pointers should be easy enough. > > I think you mean the Xen specific parts of the kexec machinery in the > kernel.c would need updating rather than the hypervisor, right? Yes, that is right. Sorry for the confusion. > I don't think these changes will cause anything more than minor problems > for whoever ports the Xen kexec stuff upstream. > > > N.B: As this is Dom0 code (not DomU) it is maintained in the xen > > repository and has been merged into Linux. > > I don't think we would bother backporting these changes to there, would > we? No, I was more thinking of the situation where Xen moves its kernel forwards. -- Horms