Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757495Ab2JEVhp (ORCPT ); Fri, 5 Oct 2012 17:37:45 -0400 Received: from mail-bk0-f46.google.com ([209.85.214.46]:50013 "EHLO mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753730Ab2JEVho (ORCPT ); Fri, 5 Oct 2012 17:37:44 -0400 MIME-Version: 1.0 In-Reply-To: <87ehlcr4et.fsf@xmission.com> References: <1348991844-12285-1-git-send-email-yinghai@kernel.org> <1348991844-12285-5-git-send-email-yinghai@kernel.org> <20121003165105.GA30214@jshin-Toonie> <20121004164630.GB2244@phenom.dumpdata.com> <871uhcsk93.fsf@xmission.com> <87ehlcr4et.fsf@xmission.com> Date: Fri, 5 Oct 2012 14:37:42 -0700 X-Google-Sender-Auth: GkVED5WMkiKSSamMrInv8WH--Lk Message-ID: Subject: Re: [PATCH 04/13] x86, mm: Revert back good_end setting for 64bit From: Yinghai Lu To: "Eric W. Biederman" Cc: Konrad Rzeszutek Wilk , Jacob Shin , Stefano Stabellini , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Tejun Heo , "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1118 Lines: 29 On Fri, Oct 5, 2012 at 2:32 PM, Eric W. Biederman wrote: > Yinghai Lu writes: > >> On Fri, Oct 5, 2012 at 2:04 PM, Eric W. Biederman wrote: >>>>> Is there a git commit that explains what the 'big range' problem is? >>> >>> At least on x86_64 this was recently tested and anywhere below 4G is >>> good, and there is a patch floating around somewhere to remove this >>> issue. >> >> patch for kernel or kexec-tools? > > kernel. > > The sgi guys needed a kdump kernel with 1G of ram to dump their all of > the memory on one of their crazy large machines and so investigated > this. > > Basically they found that a kdump kernel loaded anywhere < 4G worked, > the only change that was needed was to relaxy the 896M hard code. > > In one test they had a kdump kernel loaded above 2G. with bzImage or vmlinux? -- 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/