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From: Mahesh J Salgaonkar <mahesh@linux.vnet.ibm.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
	Linux Kernel <linux-kernel@vger.kernel.org>
Cc: Michael Ellerman <michael@ellerman.id.au>,
	Anton Blanchard <anton@samba.org>,
	Milton Miller <miltonm@bga.com>,
	"Eric W. Biederman" <ebiederm@xmission.com>
Subject: [RFC PATCH 10/10] fadump: Introduce config option for firmware assisted dump feature
Date: Wed, 13 Jul 2011 23:38:46 +0530	[thread overview]
Message-ID: <20110713180844.6210.81313.stgit@mars.in.ibm.com> (raw)
In-Reply-To: <20110713180252.6210.34810.stgit@mars.in.ibm.com>

From: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>

This patch introduces a new config option CONFIG_FA_DUMP for firmware
assisted dump feature on Powerpc (ppc64) architecture.

Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
---
 arch/powerpc/Kconfig |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 2729c66..a424ad3 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -376,6 +376,19 @@ config PHYP_DUMP
 
 	  If unsure, say "N"
 
+config FA_DUMP
+	bool "Firmware-assisted dump"
+	depends on PPC64 || PPC_RTAS || CRASH_DUMP
+	help
+	  A robust mechanism to get reliable kernel crash dump with
+	  assistance from firmware. This approach does not use kexec,
+	  instead firmware assists in booting the kdump kernel
+	  while preserving memory contents. Firmware-assisted dump
+	  is meant to be a kdump replacement offering robustness and
+	  speed not possible without system firmware assistance.
+
+	  If unsure, say "N"
+
 config PPCBUG_NVRAM
 	bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 	default y if PPC_PREP

      parent reply	other threads:[~2011-07-13 18:08 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-13 18:06 [RFC PATCH 00/10] fadump: Firmware-assisted dump support for Powerpc Mahesh J Salgaonkar
2011-07-13 18:06 ` [RFC PATCH 01/10] fadump: Add documentation for firmware-assisted dump Mahesh J Salgaonkar
2011-07-13 18:06 ` [RFC PATCH 02/10] fadump: Reserve the memory for firmware assisted dump Mahesh J Salgaonkar
2011-08-31  4:11   ` Anton Blanchard
2011-09-06 11:59     ` Mahesh Jagannath Salgaonkar
2011-07-13 18:07 ` [RFC PATCH 03/10] fadump: Register " Mahesh J Salgaonkar
2011-08-31  4:20   ` Anton Blanchard
2011-09-07  7:20     ` Mahesh J Salgaonkar
2011-09-08 18:34   ` Kumar Gala
2011-07-13 18:07 ` [RFC PATCH 04/10] fadump: Initialize elfcore header and add PT_LOAD program headers Mahesh J Salgaonkar
2011-07-13 18:07 ` [RFC PATCH 05/10] fadump: Convert firmware-assisted cpu state dump data into elf notes Mahesh J Salgaonkar
2011-08-31  4:23   ` Anton Blanchard
2011-07-13 18:07 ` [RFC PATCH 06/10] fadump: Add PT_NOTE program header for vmcoreinfo Mahesh J Salgaonkar
2011-07-13 18:08 ` [RFC PATCH 07/10] fadump: Introduce cleanup routine to invalidate /proc/vmcore Mahesh J Salgaonkar
2011-07-13 18:08 ` [RFC PATCH 08/10] fadump: Invalidate registration and release reserved memory for general use Mahesh J Salgaonkar
2011-07-13 18:08 ` [RFC PATCH 09/10] fadump: Invalidate the fadump registration during machine shutdown Mahesh J Salgaonkar
2011-07-13 18:08 ` Mahesh J Salgaonkar [this message]

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