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authorNick Piggin <npiggin@suse.de>2008-07-27 20:28:03 -0700
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-07-28 16:30:52 +1000
commit83ac6a1ed40bfbe185cf2bac5505d8d97aad8b1d (patch)
treef29cf4d1b3b6f859ead2598c9d741ffc5a56ec8b /arch
parent124c27d375f72dd857eac27f2932f9f01df76bf4 (diff)
powerpc/mm: Implement _PAGE_SPECIAL & pte_special() for 64-bit
Implement _PAGE_SPECIAL and pte_special() for 64-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(). Signed-off-by: Nick Piggin <npiggin@suse.de> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Hugh Dickins <hugh@veritas.com> Cc: "Paul E. McKenney" <paulmck@us.ibm.com> Reviewed-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions