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    SubjectRe: [Patch 5/7] powerpc: add CONFIG_KEXEC_AUTO_RESERVE
    On Wed, Aug 05, 2009 at 07:19:51AM -0400, Amerigo Wang wrote:
    >
    > 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

    Acked-by: Neil Horman <nhorman@tuxdriver.com>


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