From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752080AbZH0DRC (ORCPT ); Wed, 26 Aug 2009 23:17:02 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752018AbZH0DQ7 (ORCPT ); Wed, 26 Aug 2009 23:16:59 -0400 Received: from mx1.redhat.com ([209.132.183.28]:1974 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751694AbZH0DQ5 (ORCPT ); Wed, 26 Aug 2009 23:16:57 -0400 Date: Wed, 26 Aug 2009 23:16:10 -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: <20090827031837.4534.43300.sendpatchset@localhost.localdomain> In-Reply-To: <20090827031800.4534.94868.sendpatchset@localhost.localdomain> References: <20090827031800.4534.94868.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)