Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751939Ab3C0M3B (ORCPT ); Wed, 27 Mar 2013 08:29:01 -0400 Received: from kirsty.vergenet.net ([202.4.237.240]:36404 "EHLO kirsty.vergenet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750960Ab3C0M27 (ORCPT ); Wed, 27 Mar 2013 08:28:59 -0400 Date: Wed, 27 Mar 2013 21:28:57 +0900 From: Simon Horman To: zhouzhouyi@gmail.com Cc: kexec@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, vgoyal@redhat.com, yizhouzhou@ict.ac.cn Subject: Re: [PATCH 1/1 v1] the recommended crash memory reservation is too small for x86_64. Message-ID: <20130327122856.GK17248@verge.net.au> References: <1364209009-11592-1-git-send-email-zhouzhouyi@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1364209009-11592-1-git-send-email-zhouzhouyi@gmail.com> Organisation: Horms Solutions Ltd. User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1825 Lines: 47 On Mon, Mar 25, 2013 at 06:56:49PM +0800, zhouzhouyi@gmail.com wrote: > From: root The above line is bogus. > On Documentation/kdump/kdump.txt, section Boot into System Kernel: On x86 and x86_64, use > "crashkernel=64M@16M", but some OSes like ubuntu 12.10 use ram fs larger than 64M, so in these cases the > memory reserved for crashkernel should be at least 128M. The above lines are way to wide. Something less than 80 columns is normal. > Signed-off-by: Zhouyi Zhou > --- > Documentation/kdump/kdump.txt | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/Documentation/kdump/kdump.txt b/Documentation/kdump/kdump.txt > index 13f1aa0..1e850e0 100644 > --- a/Documentation/kdump/kdump.txt > +++ b/Documentation/kdump/kdump.txt > @@ -290,7 +290,9 @@ Boot into System Kernel > "crashkernel=64M@16M" tells the system kernel to reserve 64 MB of memory > starting at physical address 0x01000000 (16MB) for the dump-capture kernel. > > - On x86 and x86_64, use "crashkernel=64M@16M". > + On x86 and x86_64, use "crashkernel=64M@16M" (some OSes use init ram fs larger > +than 64M, for example ubuntu-12.10, use crashkernel=128M@16M instead, or dump-capture > +kernel will out of memory). I believe lines of kdmump.txt should also be 80 columns wide or less. > On ppc64, use "crashkernel=128M@32M". > > -- > 1.7.10.4 > > > _______________________________________________ > kexec mailing list > kexec@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/kexec > -- 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/