On Wed, Mar 17, 2010 at 10:58:48AM -0400, Nicolas Pitre wrote: > On Wed, 17 Mar 2010, Hemanth V wrote: > > Nicolas, Russel are there any more details available which might help > > in investigating this further. > > The only conclusion I came to so far is that ARMv5 where highmem works > just fine in all cases has VIVT cache whereas ARMv6 has VIPT cache. > And the problem with VIPT caches occurs when direct DMA is involved, > otherwise there is no problem if PIO or NFS is used. Sprinkling some > flush_cache_all() in a few places makes things work, but this is not a > satisfactory solution.
This sounds like the problem we had with the DMA API. Since that's now fixed, there shouldn't be a problem with the latest (-rc) kernels, or a kernel with my old streaming DMA patches applied. -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
