On Tue, Mar 03, 2009 at 01:36:10PM -0800, Andrew Morton wrote: > Alternatively, we could just not do the kmap_atomic() at all. i386 > won't be using this code and IIRC the only other highmem architecture > is powerpc32, and ppc32 appears to also have its own DEBUG_PAGEALLOC > implementation. So you could remove the kmap_atomic() stuff and put ARM will also be joining the highmem club in due course, maybe during the next merge window depending on how things pan out. The biggest issue we have is with kmaps interacting with ARM's DMA API code. Nicolas Pitre currently has a work-around for it, but I believe it can be better handled by extending the generic kmap infrastructure to be able to grab a reference on an already kmapped page. I've asked Nicolas to discuss this aspect of his patch set on lkml. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
