From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-da0-x22f.google.com ([2607:f8b0:400e:c00::22f]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UK55R-0008Ay-CX for kexec@lists.infradead.org; Mon, 25 Mar 2013 10:57:10 +0000 Received: by mail-da0-f47.google.com with SMTP id s35so3166253dak.20 for ; Mon, 25 Mar 2013 03:57:06 -0700 (PDT) From: zhouzhouyi@gmail.com Subject: [PATCH 1/1 v1] the recommended crash memory reservation is too small for x86_64. Date: Mon, 25 Mar 2013 18:56:49 +0800 Message-Id: <1364209009-11592-1-git-send-email-zhouzhouyi@gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: kexec@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, vgoyal@redhat.com, yizhouzhou@ict.ac.cn From: root 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. 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). On ppc64, use "crashkernel=128M@32M". -- 1.7.10.4 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec