> On Tue, 29 Jan 2002, Oliver Xymoron wrote:
> >
> > Seems like we could do slightly better to have these local areas mapped to
> > the same virtual address on each processor, which does away with the need
> > for an entire level of indirection.
>
> No no no.
>
> The reason it is a stupid idea is that if you do it, you can no longer
> share page tables between CPU's (unless all CPU's you support have TLB
> fill in software).
Yes, obviously.
Nearly as good would be replacing the current logic for figuring out the
current processor id through current with logic to access the per-cpu
data. The primary use of that id is indexing that data anyway.
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