Re: [stable] 2.6.23 boot failures on x86-64.

[Christoph Lameter <clameter@sgi.com>]

On Mon, 29 Oct 2007, Linus Torvalds wrote:

> We've had some changes since 2.6.23, and afaik, the 
> "alloc_bootmem_high_node()" code is alreadt effectively dead there. It's 
> only called if CONFIG_SPARSEMEM_VMEMMAP is *not* enabled, and I *think* we 
> enable it by force on x86-64 these days.

CONFIG_SPARSEMEM_VMEMMAP was introduced in 2.6.24-rc1.

If I read this Kconfig.x86_64 correctly then it seems that DISCONTIG is 
still the default. Andy?

config ARCH_DISCONTIGMEM_ENABLE
       bool
       depends on NUMA
       default y

config ARCH_DISCONTIGMEM_DEFAULT
        def_bool y
        depends on NUMA

config ARCH_SPARSEMEM_ENABLE
        def_bool y
        depends on (NUMA || EXPERIMENTAL)
        select SPARSEMEM_VMEMMAP_ENABLE

config ARCH_MEMORY_PROBE
        def_bool y
        depends on MEMORY_HOTPLUG

config ARCH_FLATMEM_ENABLE
        def_bool y
        depends on !NUMA
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