Umm. The difference between "cache on" and "cache off" is a bit more
drastic than "use DMA for IDE" and "don't use DMA for IDE", wouldn't you
say?
You can test it if you wish.
The point being that a system that has cache problems is just terminally
ill, while a system with DMA problems might be fixable. Fixable by having
a list of known bad disk or BIOS vendors, for example.
Which, btw, is what I've been asking for all the time.
Linus
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