On Fri, Dec 07, 2018 at 04:34:32PM +0100, Christoph Hellwig wrote: > Hi all, > > the ARM imx27/31 ports and various sh boards use > dma_declare_coherent_memory on main memory taken from the memblock > allocator. > > Is there any good reason these couldn't be switched to CMA areas? > Getting rid of these magic dma_declare_coherent_memory area would > help making the dma allocator a lot simpler.
At least for i.MX27/31 I'd say this predates CMA support, so historical reasons. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
