On Thu, Aug 29, 2013 at 07:32:32PM +0100, Stefano Stabellini wrote: > xen_swiotlb_alloc_coherent needs to allocate a coherent buffer for cpu > and devices. On native x86 and ARMv8 is sufficient to call > __get_free_pages in order to get a coherent buffer, while on ARM we need > to call arm_dma_ops.alloc.
Don't bet on this for ARMv8. It's not mandated for the architecture, so at some point some SoC will require non-cacheable buffers for coherency. -- Catalin -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
