Messages in this thread Patch in this message | | | Date | Wed, 12 Aug 2009 04:16:08 -0400 | From | Amerigo Wang <> | Subject | [Patch 5/8] powerpc: add CONFIG_KEXEC_AUTO_RESERVE |
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Introduce a new config option KEXEC_AUTO_RESERVE for powerpc.
Signed-off-by: WANG Cong <amwang@redhat.com> Acked-by: Neil Horman <nhorman@tuxdriver.com>
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Index: linux-2.6/arch/powerpc/Kconfig =================================================================== --- linux-2.6.orig/arch/powerpc/Kconfig +++ linux-2.6/arch/powerpc/Kconfig @@ -346,6 +346,17 @@ config KEXEC support. As of this writing the exact hardware interface is strongly in flux, so no good recommendation can be made. +config KEXEC_AUTO_RESERVE + bool "automatically reserve memory for kexec kernel" + depends on KEXEC + default y + ---help--- + Automatically reserve memory for a kexec kernel, so that you don't + need to specify numbers for the "crashkernel=X@Y" boot option, + instead you can use "crashkernel=auto". To make this work, you need + to have more than 4G memory. On PPC 256M is reserved, 1/32 memory + on PPC64, but it will not exceed 1T/32. + config CRASH_DUMP bool "Build a kdump crash kernel" depends on PPC64 || 6xx
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