[PATCH] powerpc: Add CONFIG_CRASH_DUMP
This patch adds a Kconfig variable, CONFIG_CRASH_DUMP, which configures the
built kernel for use as a Kdump kernel.
Currently "all" this involves is changing the value of KERNELBASE to 32 MB.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 2c1186a..773b880 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -379,6 +379,17 @@
bool
default y
+config CRASH_DUMP
+ bool "kernel crash dumps (EXPERIMENTAL)"
+ depends on PPC_MULTIPLATFORM
+ depends on EXPERIMENTAL
+ help
+ Build a kernel suitable for use as a kdump capture kernel.
+ The kernel will be linked at a different address than normal, and
+ so can only be used for Kdump.
+
+ Don't change this unless you know what you are doing.
+
config IBMVIO
depends on PPC_PSERIES || PPC_ISERIES
bool