[PATCH] powerpc: rework 4xx PTE access and TLB miss

[Benjamin Herrenschmidt]

On Tue, 2008-07-08 at 20:53 -0400, Sean MacLennan wrote:
> On Tue, 08 Jul 2008 15:54:40 +1000
> "Benjamin Herrenschmidt" <benh at kernel.crashing.org> wrote:
> 
> > This is some preliminary work to improve TLB management on SW loaded
> > TLB powerpc platforms. This introduce support for non-atomic PTE
> > operations in pgtable-ppc32.h and removes write back to the PTE from
> > the TLB miss handlers. In addition, the DSI interrupt code no longer
> > tries to fixup write permission, this is left to generic code, and
> > _PAGE_HWWRITE is gone.
> 
> Ok, this version booted for me and passed some very rudimentary
> regression tests.

Thanks for testing.

Cheers,
Ben.