Messages in this thread | | | Subject | Re: Uncacheable memory? | Date | Wed, 28 Jul 1999 18:36:42 +0100 | From | Philip Blundell <> |
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In message <Pine.GSO.4.10.9907281223210.25151-100000@isis.visi.com>, mestery@vi si.com writes: >On Wed, 28 Jul 1999, Ingo Molnar wrote: >> also there is ioremap_nocache() ... >> >I checked, and this doesn't appear to be implemented for the ARM >EBSA-285 architecture. It is #defined to be a plain old ioremap.
Ioremap'd memory is always uncached on ARM. But you need to be careful if you use this on "real" (ie non-I/O) memory, especially on the EBSA-285 -- ioremap adds in the IO_FUDGE_FACTOR and you will need to subtract it out again. Alternatively you could use __ioremap but that might not buy you very much.
p.
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