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    SubjectRe: [PATCH] x86/i386: Check PSE bit before using PAGE_KERNEL_LARGE.
    On 05/31/2012 12:40 PM, Konrad Rzeszutek Wilk wrote:
    > During bootup we would unconditionally do this on any
    > machine that was built with CONFIG_NUMA=y on i386:
    > setup_arch
    > \-initmem_init
    > \-x86_numa_init (with dummy_init as callback)
    > \- init_alloc_remap
    > \- set_pmd_pfn (with PAGE_PSE)
    > without checking to see if the CPU supports PSE. This
    > patch adds that and also allows the init_alloc_remap function
    > to properly work by falling back on PTEs.

    Well, the code looks like it is PAE-specific, and PAE implies PSE.

    Xen breaks that, but that is a divergence of Xen from x86.


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