From: Randy Dunlap Date: Wed, 17 Oct 2007 06:31:22 +0000 (-0700) Subject: Update help text for CONFIG_CRASH_DUMP X-Git-Tag: firefly_0821_release~25130 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f00b51654ec919620aec911b4c3fa4ef3952bb6d;p=firefly-linux-kernel-4.4.55.git Update help text for CONFIG_CRASH_DUMP Fix typos in CONFIG_RELOCATABLE. Use tab + 2 spaces for indentation on all lines. Signed-off-by: Randy Dunlap Cc: Bernhard Walle Cc: Vivek Goyal Cc: "Eric W. Biederman" Cc: Haren Myneni Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig index 1fb616235664..7a95c58947e4 100644 --- a/arch/i386/Kconfig +++ b/arch/i386/Kconfig @@ -831,12 +831,13 @@ 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 + 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. + to a memory address not used by the main kernel or BIOS using + PHYSICAL_START, or it must be built as a relocatable image + (CONFIG_RELOCATABLE=y). For more details see Documentation/kdump/kdump.txt config PHYSICAL_START @@ -882,17 +883,17 @@ config PHYSICAL_START Don't change this unless you know what you are doing. config RELOCATABLE - bool "Build a relocatable kernel(EXPERIMENTAL)" + bool "Build a relocatable kernel (EXPERIMENTAL)" depends on EXPERIMENTAL help 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, - but are discarded at runtime. + but are discarded at runtime. One use is for the kexec on panic case where the recovery kernel - must live at a different physical address than the primary - kernel. + must live at a different physical address than the primary + kernel. config PHYSICAL_ALIGN hex "Alignment value to which kernel should be aligned" diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig index 37f11f24a045..d681be88ae5d 100644 --- a/arch/x86_64/Kconfig +++ b/arch/x86_64/Kconfig @@ -582,17 +582,18 @@ config CRASH_DUMP bool "kernel crash dumps (EXPERIMENTAL)" depends on EXPERIMENTAL 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 + 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 + PHYSICAL_START, or it must be built as a relocatable image + (CONFIG_RELOCATABLE=y). + For more details see Documentation/kdump/kdump.txt config RELOCATABLE - bool "Build a relocatable kernel(EXPERIMENTAL)" + bool "Build a relocatable kernel (EXPERIMENTAL)" depends on EXPERIMENTAL help Builds a relocatable kernel. This enables loading and running @@ -603,8 +604,8 @@ config RELOCATABLE must live at a different physical address than the primary kernel. - Note: If CONFIG_RELOCATABLE=y, then kernel run from the address - it has been loaded at and compile time physical address + Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address + it has been loaded at and the compile time physical address (CONFIG_PHYSICAL_START) is ignored. config PHYSICAL_START