Messages in this thread | | | Subject | Re: Cache incoherencies (WAS: New resources - pls, explain :-( ) | Date | Tue, 24 Aug 1999 11:48:06 +0100 | From | Philip Blundell <> |
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>The only way I see to make the fist issue safe is to have the ring >descriptor entries non cachable.
Yes. This is the better solution for performance as well. The flushing routines are really only suitable for large blocks such as data buffers.
>Non-cache coherent archs should probably >define a kmalloc flag to allocate non cachable space. (I still don't know >what is the cleanest way to get non-cachable space. ioremap ?).
Ioremap won't necessarily work on physical RAM. You should probably define vmalloc_uncached or some such.
p.
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