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    SubjectRe: [PATCH 0/3] NUMA boot hash allocation interleaving
    On Tue, Dec 14, 2004 at 11:14:46PM -0800, Martin J. Bligh wrote:
    > Well hold on a sec. We don't need to use the hugepages pool for this,
    > do we? This is the same as using huge page mappings for the whole of
    > kernel space on ia32. As long as it's a kernel mapping, and 16MB aligned
    > and contig, we get it for free, surely?

    The whole point of the patch is to not use the direct mapping, but
    use a different interleaved mapping on NUMA machines to spread
    the memory out over multiple nodes.

    > > Using other page sizes would be probably tricky because the
    > > linux VM can currently barely deal with two page sizes.
    > > I suspect handling more would need some VM infrastructure effort
    > > at least in the changed port.
    >
    > For the general case I'd agree. But this is a setup-time only tweak
    > of the static kernel mapping, isn't it?

    It's probably not impossible, just lots of ugly special cases.
    e.g. how about supporting it for /proc/kcore etc?

    -Andi

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