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CONFIG_CRASH_DUMP: kernel crash dumps

General informations

The Linux kernel configuration item CONFIG_CRASH_DUMP has multiple definitions:

Build a kdump crash kernel (EXPERIMENTAL) found in arch/powerpc/Kconfig

The configuration item CONFIG_CRASH_DUMP:

Help text

Build a kernel suitable for use as a kdump capture kernel. The kernel will be linked at a different address than normal, and so can only be used for Kdump.

Don't change this unless you know what you are doing.

Build a kdump crash kernel found in arch/powerpc/Kconfig

The configuration item CONFIG_CRASH_DUMP:

Help text

Build a kernel suitable for use as a kdump capture kernel. The same kernel binary can be used as production kernel and dump capture kernel.

Build kdump crash kernel (EXPERIMENTAL) found in arch/arm/Kconfig

The configuration item CONFIG_CRASH_DUMP:

Help text

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

For more details see Documentation/kdump/kdump.txt

Kernel crash dumps found in arch/mips/Kconfig

The configuration item CONFIG_CRASH_DUMP:

Help text

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 firmware using PHYSICAL_START.

kernel crash dumps (EXPERIMENTAL) found in arch/i386/Kconfig

The configuration item CONFIG_CRASH_DUMP:

Help text

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

kernel crash dumps (EXPERIMENTAL) found in arch/ia64/Kconfig

The configuration item CONFIG_CRASH_DUMP:

Help text

Generate crash dump after being started by kexec.

kernel crash dumps (EXPERIMENTAL) found in arch/sh/Kconfig

The configuration item CONFIG_CRASH_DUMP:

Help text

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 using PHYSICAL_START.

For more details see Documentation/kdump/kdump.txt

kernel crash dumps (EXPERIMENTAL) found in arch/x86/Kconfig

The configuration item CONFIG_CRASH_DUMP:

Help text

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, or it must be built as a relocatable image (RELOCATABLE=y). For more details see Documentation/kdump/kdump.txt

kernel crash dumps (EXPERIMENTAL) found in arch/x86_64/Kconfig

The configuration item CONFIG_CRASH_DUMP:

Help text

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

kernel crash dumps found in arch/ia64/Kconfig

The configuration item CONFIG_CRASH_DUMP:

Help text

Generate crash dump after being started by kexec.

kernel crash dumps found in arch/s390/Kconfig

The configuration item CONFIG_CRASH_DUMP:

Help text

Generate crash dump after being started by kexec. Crash dump kernels are loaded in the main kernel with kexec-tools into a specially reserved region and then later executed after a crash by kdump/kexec. Refer to Documentation/s390/zfcpdump.txt for more details on this. This option also enables s390 zfcpdump. See also Documentation/s390/zfcpdump.txt

kernel crash dumps found in arch/x86/Kconfig

The configuration item CONFIG_CRASH_DUMP:

Help text

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, or it must be built as a relocatable image (RELOCATABLE=y). For more details see Documentation/kdump/kdump.txt

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