Re: Availability of kdb

[Jamie Lokier]

Rik van Riel wrote:
> The main difference between Linux and Netware here is the
> fact that Linux has a real userland, which can touch the
> pages on its own without going through the kernel.
> 
> This causes "spontaneously" dirtied or accessed pages,
> meaning that we really want to use the hardware bits ...

Of course you don't _have_ to do things that way with a real userland.
You can take page faults and update your own bits.  I think some of the
ports actually do this.

But we prefer the hardware, even though in some cases software-driven
faults give better guidance to the paging heuristics.

-- Jamie
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