Re: VM ideas (was: Re: TTY changes to 2.1.65)

[Rik van Riel <H.H.vanRiel@fys.ruu.nl>]

On 9 Dec 1997, David Mentre wrote:

>  The interesting point of Joerg is that he see the TLB mecanism as a
> more general mecanism than just to solve swapping problems.

OK...

>  As I'm a little involved in Distributed Shared Memories (with a PhD ;),
> I couldn't let such an opportunity happen without talking. I totally
> agree with Joerg. One problems with DSM is that you must track user
> memory accesses to maintain coherency. Unfortunatly, fine grain access
> like cache line is not available to the average system
> programmer. Therefore sub-page protection could be very useful. 

I admit I haven't thought of that... Not having this might
be analogous to the bouncing-cache-line problem slab development
was confronted with (or just avoided?)

>  Regarding DIPC, I think we could improved a little the coherency
> protocol. One big advantage of DIPC is that it provide code, and you
> can't lie with code. :) I hope I'll have more code in the future to
> explain my point of vue in DSM.

Cool, we can always use good/beautiful code...
This is especially true when I can learn new things by
reading it.

Rik.

--
Send Linux memory-management wishes to me: I'm currently looking
for something to hack...