![]() | |||||||||||||
Messages in this thread |
> I've been debugging various issues on the PowerPC 44x embedded
> architecture which happens to have non-coherent PCI DMA.
>
> One of the problem I'm hitting is that one really need to enforce
> kmalloc alignement to cache lines or bad things will happen (among
> others with USB), for some reasons, powerpc failed to do so, I fixed it.
Heh... I hit the same problem literally 5 years ago:
http://lwn.net/Articles/1783/
I implemented the __dma_buffer annotation:
http://lwn.net/Articles/2269/
But DaveM said we should just use the PCI pool code instead:
http://lwn.net/Articles/2270/
- R.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
| ||||||||||||
| Last update: 2007-11-19 22:47 [from the cache] ©2003-2008 | |||||||||||||