tree 16655ef672773678f8ce38a8158c83127a4aef5c
parent 74b5037baa2011a2799e2c43adde7d171b072f9e
author Michael Ellerman <mpe@ellerman.id.au> 1438928384 +1000
committer Michael Ellerman <mpe@ellerman.id.au> 1439890189 +1000

powerpc/cell: Drop support for 64K local store on 4K kernels

Back in the olden days we added support for using 64K pages to map the
SPU (Synergistic Processing Unit) local store on Cell, when the main
kernel was using 4K pages.

This was useful at the time because distros were using 4K pages, but
using 64K pages on the SPUs could reduce TLB pressure there.

However these days the number of Cell users is approaching zero, and
supporting this option adds unpleasant complexity to the memory
management code.

So drop the option, CONFIG_SPU_FS_64K_LS, and all related code.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Jeremy Kerr <jk@ozlabs.org>