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[SPARC64]: Eliminate PCI IOMMU dma mapping size limit.
authorDavid S. Miller <davem@sunset.davemloft.net>
Fri, 14 Oct 2005 05:15:24 +0000 (22:15 -0700)
committerDavid S. Miller <davem@sunset.davemloft.net>
Fri, 14 Oct 2005 05:15:24 +0000 (22:15 -0700)
The hairy fast allocator in the sparc64 PCI IOMMU code
has a hard limit of 256 pages.  Certain devices can
exceed this when performing very large I/Os.

So replace with a more simple allocator, based largely
upon the arch/ppc64/kernel/iommu.c code.

Signed-off-by: David S. Miller <davem@davemloft.net>

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