Re: [PATCH 1/9] powerpc: Fix bogus cache flushing on all 40x and BookE processors v2

On Dec 11, 2008, at 6:15 PM, Josh Boyer wrote:

On Mon, 08 Dec 2008 16:39:52 +1100
Benjamin Herrenschmidt [off-list ref] wrote:

quoted

We were missing the CPU_FTR_NOEXECUTE bit in our cputable for all
these processors. The result is that update_mmu_cache() would flush
the cache for all pages mapped to userspace which is totally
unnecessary on those processors since we already handle flushing
on execute in the page fault path.

This should provide a nice speed up ;-)

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

Acked-by: Josh Boyer <redacted>

Kumar, feel free to take this through your tree.

josh

applied to next

- k