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    Subject[Patch 5/7] powerpc: add CONFIG_KEXEC_AUTO_RESERVE

    Introduce a new config option KEXEC_AUTO_RESERVE for powerpc.

    Signed-off-by: WANG Cong <amwang@redhat.com>

    ---
    Index: linux-2.6/arch/powerpc/Kconfig
    ===================================================================
    --- linux-2.6.orig/arch/powerpc/Kconfig
    +++ linux-2.6/arch/powerpc/Kconfig
    @@ -346,6 +346,16 @@ 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".
    + On PPC, 256M is reserved and only when you have memory > 4G.
    +
    config CRASH_DUMP
    bool "Build a kdump crash kernel"
    depends on PPC64 || 6xx

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