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[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>
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2 changed files with 15 additions and 1 deletions
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@ -761,6 +761,13 @@ config CRASH_DUMP
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depends on HIGHMEM
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help
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Generate crash dump after being started by kexec.
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This should be normally only set in special crash dump kernels
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which are loaded in the main kernel with kexec-tools into
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a specially reserved region and then later executed after
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a crash by kdump/kexec. The crash dump kernel must be compiled
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to a memory address not used by the main kernel or BIOS using
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PHYSICAL_START.
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For more details see Documentation/kdump/kdump.txt
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config PHYSICAL_START
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hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP)
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@ -488,7 +488,14 @@ config CRASH_DUMP
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bool "kernel crash dumps (EXPERIMENTAL)"
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depends on EXPERIMENTAL
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help
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Generate crash dump after being started by kexec.
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Generate crash dump after being started by kexec.
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This should be normally only set in special crash dump kernels
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which are loaded in the main kernel with kexec-tools into
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a specially reserved region and then later executed after
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a crash by kdump/kexec. The crash dump kernel must be compiled
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to a memory address not used by the main kernel or BIOS using
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PHYSICAL_START.
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For more details see Documentation/kdump/kdump.txt
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config PHYSICAL_START
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hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP)
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