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authorRoland Dreier <roland@purestorage.com>2012-03-05 10:05:28 -0800
committerRoland Dreier <roland@purestorage.com>2012-03-12 16:24:59 -0700
commitdb5a7a65c05867cb6ff5cb6d556a0edfce631d2d (patch)
treefdb7cb84d4ae634303c5337203ce482ae4c83c97 /include/linux/mlx4
parent096335b3f9830b90d13aee77252cf6f5f12a258c (diff)
mlx4_core: Scale size of MTT table with system RAM
The current driver defaults to 1M MTT segments, where each segment holds 8 MTT entries. This limits the total memory registered to 8M * PAGE_SIZE which is 32GB with 4K pages. Since systems that have much more memory are pretty common now (at least among systems with InfiniBand hardware), this limit ends up getting hit in practice quite a bit. Handle this by having the driver allocate at least enough MTT entries to cover 2 * totalram pages. Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'include/linux/mlx4')
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