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| author | Kumar Gala <galak@kernel.crashing.org> | 2008-07-31 08:41:10 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2008-09-24 16:29:42 -0500 |
| commit | 9a62c05180ff55fdaa517370c6f077402820406c (patch) | |
| tree | aa9f04bb2b681f639768ba9f1e61bba5c1493c69 /arch/powerpc/include/asm/page_32.h | |
| parent | 9bf2b5cdc5fe5e3136ceeecc85141765023ded6e (diff) | |
powerpc/mm: Implement _PAGE_SPECIAL & pte_special() for 32-bit
Implement _PAGE_SPECIAL and pte_special() for 32-bit powerpc. This bit will
be used by the fast get_user_pages() to differenciate PTEs that correspond
to a valid struct page from special mappings that don't such as IO mappings
obtained via io_remap_pfn_ranges().
We currently only implement this on sub-arch that support SMP or will so
in the future (6xx, 44x, FSL-BookE) and not (8xx, 40x).
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/page_32.h')
0 files changed, 0 insertions, 0 deletions