[PATCH] powerpc: Add Initiate Coprocessor Store Word (icswx) support

[Benjamin Herrenschmidt]

On Mon, 2011-04-18 at 11:36 +1000, Anton Blanchard wrote:
> - By including linux/spinlock_types.h we can remove the dynamic
> allocation
>   of the spinlock hack and simplify things a lot.

Causes all sort of hell for me on some configs. Lockdep is not happy for
example and there's some nasty include dependency circles. Not sure
that's fixable at least not without some important cleanup of how
mmu_context_t is defined.

Ben.