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    SubjectRe: mprotect pgprot handling weirdness
    On Tue, 2010-04-06 at 15:09 +1000, Benjamin Herrenschmidt wrote:
    > (*) Right now it's near impossible to add arch specific PROT_* bits to
    > mmap/mprotect for fancy things like cachability attributes, or other
    > nifty things like reverse-endian mappings that we have on some embedded
    > platforms, I'm investigating ways to better separate vm_page_prot from
    > vm_flags so some PROT_* bits can go straight to the former without
    > having to be mirrored in some way in the later.

    The other (easier) option is to make the vm flags always 64-bit and
    reserve a range of bits here for the arch to use but I suppose there's
    going to be unhappiness about that one :-)


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      Last update: 2010-04-06 07:45    [W:0.019 / U:48.028 seconds]
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