Re: SCSI breakage on non-cache coherent architectures

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

> I'd like to be rid of it inside the command for various reasons:  every
> command has one of these, and they're expensive in the allocation (at 96
> bytes).  There's no reason we have to allocate and free that amount of
> space with every command.  In theory, the number of these is bounded at
> the queue depth, in practice, there's usually only one, and this DMA
> alignment issue does requires most drivers to double copy.

Do you have a plan for short term here ? I'd like something fixed
for .25, so I may have to introduce a __dma_aligned macro of some sort
to deal with that in the meantime...

Ben.