From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933653AbZIDKKg (ORCPT ); Fri, 4 Sep 2009 06:10:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933636AbZIDKK1 (ORCPT ); Fri, 4 Sep 2009 06:10:27 -0400 Received: from mx1.redhat.com ([209.132.183.28]:35646 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933632AbZIDKKX (ORCPT ); Fri, 4 Sep 2009 06:10:23 -0400 Date: Fri, 4 Sep 2009 06:08:55 -0400 From: Amerigo Wang To: linux-kernel@vger.kernel.org Cc: tony.luck@intel.com, linux-ia64@vger.kernel.org, Neil Horman , "Eric W. Biederman" , Andi Kleen , Ingo Molnar , Michael Ellerman , Amerigo Wang , "M. Mohan Kumar" , akpm@linux-foundation.org, bernhard.walle@gmx.de, Fenghua Yu , kamezawa.hiroyu@jp.fujitsu.com, Anton Vorontsov Message-Id: <20090904101122.5220.45724.sendpatchset@localhost.localdomain> In-Reply-To: <20090904101047.5220.20618.sendpatchset@localhost.localdomain> References: <20090904101047.5220.20618.sendpatchset@localhost.localdomain> Subject: [Patch 3/8] ia64: add CONFIG_KEXEC_AUTO_RESERVE Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce a new config option KEXEC_AUTO_RESERVE for ia64. Signed-off-by: WANG Cong Acked-by: Neil Horman --- Index: linux-2.6/arch/ia64/Kconfig =================================================================== --- linux-2.6.orig/arch/ia64/Kconfig +++ linux-2.6/arch/ia64/Kconfig @@ -582,6 +582,20 @@ config KEXEC support. As of this writing the exact hardware interface is strongly in flux, so no good recommendation can be made. +config KEXEC_AUTO_RESERVE + bool "automatically reserve memory for kexec kernel" + depends on KEXEC + default y + ---help--- + Automatically reserve memory for a kexec kernel, so that you don't + need to specify numbers for the "crashkernel=X@Y" boot option, + instead you can use "crashkernel=auto". To make this work, you need + to have more than 4G memory. + + The reserved memory size is different depends on how much memory + you actually have. Please check Documentation/kdump/kdump.txt. + If you doubt, say N. + config CRASH_DUMP bool "kernel crash dumps" depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)