Commit f00b5165 authored by Randy Dunlap's avatar Randy Dunlap Committed by Linus Torvalds

Update help text for CONFIG_CRASH_DUMP

Fix typos in CONFIG_RELOCATABLE.  Use tab + 2 spaces for indentation on all
lines.
Signed-off-by: default avatarRandy Dunlap <randy.dunlap@oracle.com>
Cc: Bernhard Walle <bwalle@suse.de>
Cc: Vivek Goyal <vgoyal@in.ibm.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Haren Myneni <hbabu@us.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 8bc9d422
...@@ -831,12 +831,13 @@ config CRASH_DUMP ...@@ -831,12 +831,13 @@ config CRASH_DUMP
depends on HIGHMEM depends on HIGHMEM
help help
Generate crash dump after being started by kexec. Generate crash dump after being started by kexec.
This should be normally only set in special crash dump kernels This should be normally only set in special crash dump kernels
which are loaded in the main kernel with kexec-tools into which are loaded in the main kernel with kexec-tools into
a specially reserved region and then later executed after a specially reserved region and then later executed after
a crash by kdump/kexec. The crash dump kernel must be compiled a crash by kdump/kexec. The crash dump kernel must be compiled
to a memory address not used by the main kernel or BIOS using to a memory address not used by the main kernel or BIOS using
PHYSICAL_START. PHYSICAL_START, or it must be built as a relocatable image
(CONFIG_RELOCATABLE=y).
For more details see Documentation/kdump/kdump.txt For more details see Documentation/kdump/kdump.txt
config PHYSICAL_START config PHYSICAL_START
...@@ -882,17 +883,17 @@ config PHYSICAL_START ...@@ -882,17 +883,17 @@ config PHYSICAL_START
Don't change this unless you know what you are doing. Don't change this unless you know what you are doing.
config RELOCATABLE config RELOCATABLE
bool "Build a relocatable kernel(EXPERIMENTAL)" bool "Build a relocatable kernel (EXPERIMENTAL)"
depends on EXPERIMENTAL depends on EXPERIMENTAL
help help
This builds a kernel image that retains relocation information This builds a kernel image that retains relocation information
so it can be loaded someplace besides the default 1MB. so it can be loaded someplace besides the default 1MB.
The relocations tend to make the kernel binary about 10% larger, The relocations tend to make the kernel binary about 10% larger,
but are discarded at runtime. but are discarded at runtime.
One use is for the kexec on panic case where the recovery kernel One use is for the kexec on panic case where the recovery kernel
must live at a different physical address than the primary must live at a different physical address than the primary
kernel. kernel.
config PHYSICAL_ALIGN config PHYSICAL_ALIGN
hex "Alignment value to which kernel should be aligned" hex "Alignment value to which kernel should be aligned"
......
...@@ -582,17 +582,18 @@ config CRASH_DUMP ...@@ -582,17 +582,18 @@ config CRASH_DUMP
bool "kernel crash dumps (EXPERIMENTAL)" bool "kernel crash dumps (EXPERIMENTAL)"
depends on EXPERIMENTAL depends on EXPERIMENTAL
help help
Generate crash dump after being started by kexec. Generate crash dump after being started by kexec.
This should be normally only set in special crash dump kernels This should be normally only set in special crash dump kernels
which are loaded in the main kernel with kexec-tools into which are loaded in the main kernel with kexec-tools into
a specially reserved region and then later executed after a specially reserved region and then later executed after
a crash by kdump/kexec. The crash dump kernel must be compiled a crash by kdump/kexec. The crash dump kernel must be compiled
to a memory address not used by the main kernel or BIOS using to a memory address not used by the main kernel or BIOS using
PHYSICAL_START. PHYSICAL_START, or it must be built as a relocatable image
For more details see Documentation/kdump/kdump.txt (CONFIG_RELOCATABLE=y).
For more details see Documentation/kdump/kdump.txt
config RELOCATABLE config RELOCATABLE
bool "Build a relocatable kernel(EXPERIMENTAL)" bool "Build a relocatable kernel (EXPERIMENTAL)"
depends on EXPERIMENTAL depends on EXPERIMENTAL
help help
Builds a relocatable kernel. This enables loading and running Builds a relocatable kernel. This enables loading and running
...@@ -603,8 +604,8 @@ config RELOCATABLE ...@@ -603,8 +604,8 @@ config RELOCATABLE
must live at a different physical address than the primary must live at a different physical address than the primary
kernel. kernel.
Note: If CONFIG_RELOCATABLE=y, then kernel run from the address Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
it has been loaded at and compile time physical address it has been loaded at and the compile time physical address
(CONFIG_PHYSICAL_START) is ignored. (CONFIG_PHYSICAL_START) is ignored.
config PHYSICAL_START config PHYSICAL_START
......
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