powerpc: Fix bogus cache flushing on all 40x and BookE processors v2

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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 <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

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Benjamin Herrenschmidt 2008-12-12 17:33:25 +11:00 • committed by Kumar Gala

parent 361425fc32

commit 8309ce7280

1 changed files with 8 additions and 7 deletions

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arch/powerpc/include/asm/cputable.h

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