From: Kumar Gala Date: Thu, 31 Jul 2008 13:41:10 +0000 (-0500) Subject: powerpc/mm: Implement _PAGE_SPECIAL & pte_special() for 32-bit X-Git-Tag: v2.6.28-rc1~569^2~47^2~1 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9a62c05180ff55fdaa517370c6f077402820406c;p=pandora-kernel.git 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 Acked-by: Benjamin Herrenschmidt --- Reading git-diff-tree failed