diff options
| author | Andi Kleen <ak@suse.de> | 2006-09-26 10:52:35 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-09-26 10:52:35 +0200 |
| commit | 1edf777803bdd2aeeb04cf44508fd9b88737fba8 (patch) | |
| tree | 5b583b439d5fbee22e2c391be9c6c172e34ae222 /arch/x86_64 | |
| parent | cbf9b4bb76c9ce53b7fdde0dffcd000951b5f0d4 (diff) | |
[PATCH] i386/x86-64: Improve Kconfig description of CRASH_DUMP
Improve Kconfig description of CONFIG_CRASH_DUMP. Previously
it was too brief to be useful.
Cc: vgoyal@in.ibm.com
Cc: ebiederm@xmission.com
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch/x86_64')
| -rw-r--r-- | arch/x86_64/Kconfig | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig index 6cd4878625f..927b392a4aa 100644 --- a/arch/x86_64/Kconfig +++ b/arch/x86_64/Kconfig @@ -488,7 +488,14 @@ config CRASH_DUMP bool "kernel crash dumps (EXPERIMENTAL)" depends on EXPERIMENTAL 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 + which are loaded in the main kernel with kexec-tools into + a specially reserved region and then later executed after + 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 + PHYSICAL_START. + For more details see Documentation/kdump/kdump.txt config PHYSICAL_START hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP) |