[parisc-linux] itlb miss handler optimizations!

Joel Soete jsoe0708@tiscali.be
Tue, 19 Aug 2003 14:33:04 +0200


>On Thu, Aug 14, 2003 at 08:02:04AM +0200, Joel Soete wrote:
>> btw is it for that reason (interlock) that in your patch we can read:
>> [...]
>>         cmpb,=        %r0,t0,itlb_miss_...
>>         nop
>> [...]
>> I am alway asking why the 'nop'.
>
>To fill the delayed branch slot (a silly idea, but ...)

Would it be the same 'by setting the "nullify" bit' (ie cmpb,=,n ...)

Joel




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