Re: DMA memory shortage?

Adam Heath (doogie@debian.org)
Fri, 11 Dec 1998 21:25:22 -0600 (CST)


On 10 Dec 1998, H. Peter Anvin wrote:

> This is very common if you have large amounts of memory, since only
> the first 16 MB is usable for ISA DMA. I think if you have enough
> memory I think it is the right thing to save a pool of DMA-capable
> pages for that purpose only; I have been meaning to implement such a
> hack.

Why? When there isn't enough dma pages available, but enough free mem, the
kernel could move the pages into upper memory. that is the proper way.

Adam

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