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    SubjectRe: [PATCH] powerpc/mm: setting mmaped page cache property through device tree
    On Tue, 2009-12-01 at 15:35 +0100, Segher Boessenkool wrote:
    > So make the memory known to the kernel, just tell the kernel not to
    > use it. If it's normal system RAM, just put it in the "memory" node
    > and do a memreserve on it (or do something in your platform code); if
    > it's some other memory, do a device driver for it, map it there.

    Right, if he's going to map it cachable he shouldn't bother with using
    mem= or crap like that. And /dev/mem should just work.


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