From: Andi Kleen Date: Tue, 26 Sep 2006 08:52:35 +0000 (+0200) Subject: [PATCH] i386/x86-64: Improve Kconfig description of CRASH_DUMP X-Git-Tag: v2.6.19-rc1~1077^2~103 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1edf777803bdd2aeeb04cf44508fd9b88737fba8;p=linux-2.6 [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 --- diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig index c134a545b3..e34a4dbd6b 100644 --- a/arch/i386/Kconfig +++ b/arch/i386/Kconfig @@ -761,6 +761,13 @@ config CRASH_DUMP depends on HIGHMEM help 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) diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig index 6cd4878625..927b392a4a 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)