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    Subject[PATCH 11/35] x86: enable MAXSMP
    Set MAXSMP to enable CONFIG_CPUMASK_OFFSTACK which moves cpumask's off
    the stack (and in structs) when using cpumask_var_t.

    Signed-off-by: Mike Travis <travis@sgi.com>
    Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
    ---
    arch/x86/Kconfig | 11 ++++++-----
    1 file changed, 6 insertions(+), 5 deletions(-)

    --- linux-2.6.28.orig/arch/x86/Kconfig
    +++ linux-2.6.28/arch/x86/Kconfig
    @@ -573,6 +573,7 @@ config IOMMU_HELPER
    config MAXSMP
    bool "Configure Maximum number of SMP Processors and NUMA Nodes"
    depends on X86_64 && SMP && DEBUG_KERNEL && EXPERIMENTAL
    + select CPUMASK_OFFSTACK
    help
    Configure maximum number of CPUS and NUMA Nodes for this
    architecture (up to 4096!).
    @@ -584,16 +585,16 @@ config MAXSMP
    If unsure, say N.

    config NR_CPUS
    - int "Maximum number of CPUs (2-4096)" if !MAXSMP
    - range 2 4096
    depends on SMP
    + int "Maximum number of CPUs" if SMP && !MAXSMP
    + range 2 512 if SMP && !MAXSMP
    default "4096" if MAXSMP
    - default "32" if X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000
    + default "32" if X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000
    default "8"
    help
    This allows you to specify the maximum number of CPUs which this
    - kernel will support. The maximum supported value is 512 and the
    - minimum value which makes sense is 2.
    + kernel will support. The maximum supported value is 512 (4096
    + if MAXSMP set) and the minimum value which makes sense is 2.

    This is purely to save memory - each supported CPU adds
    approximately one kilobyte to the kernel image.
    --


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