Re: [f-cpu] tlb last ! (secure bit, lib ring)

[Michael Riepe <michael@stud.uni-hannover.de>]

On Wed, Aug 28, 2002 at 04:23:02PM +0000, Nicolas Boulay wrote:
> I forgot to add for the tlb, the tagged region.
> - So one more bit in the tlb ("secure bit").
> - split the load&store in normal and secure one (to access the secure
> area).

You better forget that idea soon. Tagged load&store doesn't help with
security at all - you still have to scan the code for `illegal' stores,
which is a pretty hard job. If it weren't, we could do it with regular
stores as well and wouldn't need special instructions at all.

-- 
 Michael "Tired" Riepe <Michael.Riepe@stud.uni-hannover.de>
 "All I wanna do is have a little fun before I die"
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