On Sun, Jun 16, 2013 at 12:15:08AM +0100, Grant Likely wrote: > I don't think this special case is needed anymore. From what I can tell, > setup_dma_zone() takes care of marking the region to be reserved for > DMA, and that happens before arm_memblock_init() which calls > arm_mm_memblock_reserve(). Therefore the mm setup should already know > about the reserved region and it won't need to be explicitly reserved > and then freed. That means the special case can be dropped from the > common code.
No it doesn't. setup_dma_zone is all about setting the high watermark for GFP_DMA allocations. It has nothing to do with _temoprarily_ reserving the low 1MB, ensuring that no other user can use any of that precious SA1111 memory during the kernel boot. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
