> Well, if TLB is ON and we take (say) a DTLB miss.
> Then if TLB stays ON in the miss handler, the miss handler could generate an
> ITLB miss.

Ack  I'm willing to use KSEG0-like approach (nios2 have the similar) which
eliminates the necessity to have iTLB to run kernel code.

-nisimura
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