[POWERPC] spufs: remove need for struct page for SPEs
This patch removes the need for struct page for SPE local store
and registers from spufs. It also makes the locking much more
obvious and no longer relying on the truncate logic black magic
for protecting against races between unmap_mapping_range() and
new pages faulted in. It does so by switching to a nopfn() handler
and using the new vm_insert_pfn() to setup the PTEs itself while
holding a lock on the SPE.
The nice thing is that this patch actually removes a lot more code
than it adds :-)
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 0088c5e..340d9be 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -876,7 +876,7 @@
config ARCH_SPARSEMEM_DEFAULT
def_bool y
- depends on (SMP && PPC_PSERIES) || PPC_CELL
+ depends on (SMP && PPC_PSERIES) || PPC_PS3
config ARCH_POPULATES_NODE_MAP
def_bool y