On 12/17/2013 11:39 AM, Toru Nishimura wrote:
>> By design, the TLB is turned off on any exception.
> It's a very bad decision. Please consider TLB machinery is a standard
> feature for any serious processors.  PPC is an infamous example to
> automatically switch off VM functionality to process exception handler
> logic path.  It's a kind of OS writer's nightmare ...

I don't see why that would cause any serious issue. It even makes the
design simpler as the HW does not need a second TLB for the exception
vectors.

Sébastien

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