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SubjectRe: PCI DMA to small buffers on cache-incoherent arch
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   From: Oliver Neukum <oliver@neukum.name>
Date: Tue, 11 Jun 2002 14:06:14 +0200

A sparc64 is unlikely to be short on memory, or is it ?
What's wrong with always aligning on 128 bytes on sparc64 ?
A runtime check would be expensive.

Maybe on arch FOO, target X needs no alignment when using PCI
controller Y, but for PCI controller Z it does need alignment.
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