Re: MTRR & NVTNT

Alan Cox (alan@lxorguk.ukuu.org.uk)
Sun, 14 Mar 1999 14:30:46 +0000 (GMT)


> I think (2) *is* going to be more complex than (1). More code and more
> data. And for what benefit? Not that many people have multiple video
> cards, and those who do probably have CPUs with >2 MTRRs. Even the el

Why are you obsessed with MTRR's and video cards. The Centaur C6 wants some
of the MTRR's mapping main memory for performance. There are plenty of
other memory mapped cards. Almost any device with a block shared memory
buffer will benefit.

> cheapo Centaurs have 8. Time for AMD to pull their finger out...

AMD are quite obviously aiming at a standard desktop PC mentality, one MTRR
for the video ram, one for the texture ram, and a seperate MSRR for the RAM
area.

> Anyway, once my current patch gets applied, I can ponder this more
> closely. One step at a time.

Yep

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