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authorNick Piggin <npiggin@suse.de>2008-05-22 00:10:56 +1000
committerPaul Mackerras <paulus@samba.org>2008-06-16 15:00:20 +1000
commit598056d5af8fef1dbe8f96f5c2b641a528184e5a (patch)
tree4839b7a63cade4751527f94307a05687710311ad /kernel/signal.c
parenta9653cf540d407fb75deb3db65a1be6c81d53ee0 (diff)
[POWERPC] Fix rmb to order cacheable vs. noncacheable
lwsync is explicitly defined not to have any effect on the ordering of accesses to device memory, so it cannot be used for rmb(). sync appears to be the only barrier which fits the bill. Signed-off-by: Nick Piggin <npiggin@suse.de> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'kernel/signal.c')
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