[RFC PATCH 10/10] fadump: Introduce config option for firmware assisted dump feature

Mahesh J Salgaonkar mahesh at linux.vnet.ibm.com
Thu Jul 14 04:08:46 EST 2011

From: Mahesh Salgaonkar <mahesh at 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 at 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"
 	bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 	default y if PPC_PREP

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