Messages in this thread | | | Subject | Re: CONFIG_BIGMEM and rawio | Date | Fri, 3 Sep 1999 10:52:05 +0100 (BST) | From | Alan Cox <> |
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> 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."
Unfortunately if rawio causes random spontaneous peculiar fails on 4Gig systems nobody will use rawio. There is a certain amount of 'consistency matters' involved here.
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