RE: [PATCH] Remove 7 instructions in 8xx ITLB Miss when pinned TLBs is set

Joakim Tjernlund wrote:

quoted

I have updated the patch to address the modules issue. I have also included my response to Dans mail
since I forgot to include the list in that reply.

Fine....I'll check it in.


	-- Dan

Thanks Dan

There is another small optimization that can be done in the TLB Miss/Error handlers. Move
branch instructions 1 instruction away from the test. That will give branch prediction
a chance to do its job. I did a run with LM bench and it did a difference (barley). The
down side is that the code gets harder to read. I found 5 branch instructions that
could be moved:
DTLB Error, 3 branches can be moved.
DTLB Miss, 1 branch can be moved.
ITLB Miss, 1 branch can be moved.

What do you think? Want a patch?

 Jocke

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/