Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755400Ab2KMR46 (ORCPT ); Tue, 13 Nov 2012 12:56:58 -0500 Received: from terminus.zytor.com ([198.137.202.10]:34796 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751721Ab2KMR45 (ORCPT ); Tue, 13 Nov 2012 12:56:57 -0500 Message-ID: <50A289BB.5030009@zytor.com> Date: Tue, 13 Nov 2012 09:56:11 -0800 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121029 Thunderbird/16.0.2 MIME-Version: 1.0 To: Stefano Stabellini CC: Yinghai Lu , Thomas Gleixner , Ingo Molnar , Jacob Shin , Andrew Morton , Konrad Rzeszutek Wilk , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH 28/46] x86, mm: Add pointer about Xen mmu requirement for alloc_low_pages References: <20121112193044.GA11615@phenom.dumpdata.com> <1352755122-25660-1-git-send-email-yinghai@kernel.org> <1352755122-25660-29-git-send-email-yinghai@kernel.org> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1616 Lines: 52 On 11/13/2012 08:38 AM, Stefano Stabellini wrote: > On Mon, 12 Nov 2012, Yinghai Lu wrote: >> From: Stefano Stabellini >> >> Add link to commit 279b706 for more information >> >> Signed-off-by: Yinghai Lu > > ah, here it is, OK then > >> arch/x86/mm/init.c | 5 +++++ >> 1 files changed, 5 insertions(+), 0 deletions(-) >> >> diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c >> index f5e0120..a7939ed 100644 >> --- a/arch/x86/mm/init.c >> +++ b/arch/x86/mm/init.c >> @@ -25,6 +25,11 @@ unsigned long __meminitdata pgt_buf_top; >> >> static unsigned long min_pfn_mapped; >> >> +/* >> + * Pages returned are already directly mapped. >> + * >> + * Changing that is likely to break Xen, see commit 279b706 for detail info. > ^detailed > When making references to git commits, please include the title of the commit: * * Changing that is likely to break Xen, see commit: * * 279b706 x86,xen: introduce x86_init.mapping.pagetable_reserve * * for detailed information. Otherwise it might be very confusing if we have an abbreviated hash collision or end up having to change git to use another hash system. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- 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/