Messages in this thread | | | Date | Fri, 03 Sep 1999 01:24:02 +0200 | From | Manfred Spraul <> | Subject | Re: CONFIG_BIGMEM and rawio |
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Alan Cox wrote: > Transparently using bounce buffers would be an even better idea.
But OTHO, if you buy 4 GB memory you want good performance. If you use raw-io, then you need good IO performance, so you would buy a DMA-controller.
Basically, I'm sure that 99.9% of the bounce buffer cases would be on developer machines, noone would use such an installation for production.
I think it would be acceptable to say "if you want > 2 GB memory and raw-io, then you must buy a DMA controller."
The only problem I currently see is software RAID-5.
-- Manfred
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