[PATCH 8/8] arm: kdump: add CONFIG_CRASH_DUMP Kconfig option
Mika Westerberg
ext-mika.1.westerberg at nokia.com
Tue Apr 20 04:50:54 EDT 2010
Add CONFIG_CRASH_DUMP configuration option which is used by dump capture
kernels. Dump capture kernel must be loaded into different physical address
than the primary kernel. This means that PHYS_OFFSET must be different and
it also should match the 'crashkernel=size at start' value passed to primary
kernel command line.
Signed-off-by: Mika Westerberg <ext-mika.1.westerberg at nokia.com>
---
arch/arm/Kconfig | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index c5408bf..b8c37dc 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1466,6 +1466,18 @@ config ATAGS_PROC
Should the atags used to boot the kernel be exported in an "atags"
file in procfs. Useful with kexec.
+config CRASH_DUMP
+ bool "Build kdump crash kernel (EXPERIMENTAL)"
+ depends on EXPERIMENTAL
+ help
+ Build a kernel suitable for use as kdump capture kernel. This should
+ be set only on dump capture kernels. Note that dump capture kernel
+ must be loaded into different physical address than the primary kernel
+ (e.g set PHYS_OFFSET and related mach/Makefile.boot parameters
+ to match value given in 'crashkernel=size at start').
+
+ For more details see Documentation/kdump/kdump.txt
+
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