diff options
Diffstat (limited to 'arch/x86_64/Kconfig')
| -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) |