| commit | 127493d5dc73589cbe00ea5ec8357cc2a4c0d82a | |
| author | Nishanth Aravamudan <nacc@us.ibm.com> | |
| Wed, 13 Apr 2011 19:45:59 +0000 (13 19:45 +0000) | ||
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | |
| Mon, 18 Apr 2011 03:08:08 +0000 (18 13:08 +1000) | ||
| tree | aae7b2ce16ed3950cf49cd0ad00a5ee780b40344 | treesnapshot (tar.gz zip) |
| parent | 7c7a81b53e581d727d069cc45df5510516faac31 | commitdiff |
powerpc/pseries: Use a kmem cache for DTL buffers
PAPR specifies that DTL buffers can not cross AMS environments (aka CMO
in the PAPR) and can not cross a memory entitlement granule boundary
(4k). This is found in section 14.11.3.2 H_REGISTER_VPA of the PAPR.
kmalloc does not guarantee an alignment of the allocation, though,
beyond 8 bytes (at least in my understanding). Create a special kmem
cache for DTL buffers with the alignment requirement.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
PAPR specifies that DTL buffers can not cross AMS environments (aka CMO
in the PAPR) and can not cross a memory entitlement granule boundary
(4k). This is found in section 14.11.3.2 H_REGISTER_VPA of the PAPR.
kmalloc does not guarantee an alignment of the allocation, though,
beyond 8 bytes (at least in my understanding). Create a special kmem
cache for DTL buffers with the alignment requirement.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| arch/powerpc/platforms/pseries/setup.c | diffblobblamehistory |