powerpc/mm: Used free register to save a few cycles in SW TLB miss handling

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Now that r0 is free we can keep the value of I/DMISS in r3 and not reload
it before doing the tlbli/d.  This saves us a few cycles in the fast path
case.

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

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Kumar Gala 2009-03-19 03:55:40 +00:00 • committed by Benjamin Herrenschmidt

parent 00fcb14703

commit eb3436a013

1 changed files with 24 additions and 27 deletions

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arch/powerpc/kernel/head_32.S

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