> > yep, i agree. I'm not sure what the biggest allocation is, some drivers
> > might use megabytes or contiguous RAM?
>
> Stupidity has no limits...
Unfortunately its frequently wired into the hardware to save a few cents on
scatter gather logic.
We need 128K blocks for sound DMA buffers and most sound cards they need to
be linear (but not the newer ones thankfully). Some video capture hardware
needs 4Mb but that needs to use bootmem (in 2.2 they use bigmem hacks)
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