Hi, Are there any comments on these? Without them dma-coherent can't be used on arm64 so it would be good to get them merged if there are no objections.
I can resend with Michal's ack for patch 2 if needed. Thanks, Brian On Tue, Jan 05, 2016 at 04:41:25PM +0000, Brian Starkey wrote:
Hi, This may well have been buried with the holidays. It still applies fine on next-20160105, but I notice patch 2 will trivially conflict with [2] on some context lines. As discussed here[1], these patches implement a MEMREMAP_WC flag for memremap(), which can be used to obtain writecombine mappings. This is then used for setting up dma_coherent_mem regions which use the DMA_MEMORY_MAP flag. Patch 3 makes sure that the appropriate memset function is used when zeroing coherent allocations, which fixes an alignment fault on arm64. Best Regards, Brian [1] http://lists.infradead.org/pipermail/linux-arm-kernel/2015-December/390857.html [2] http://lists.infradead.org/pipermail/linux-arm-kernel/2016-January/397163.html Brian Starkey (3): memremap: add MEMREMAP_WC flag drivers: dma-coherent: use MEMREMAP_WC for DMA_MEMORY_MAP drivers: dma-coherent: use memset_io for DMA_MEMORY_IO drivers/base/dma-coherent.c | 25 ++++++++++++++++++++----- include/linux/io.h | 1 + kernel/memremap.c | 15 +++++++++++++-- 3 files changed, 34 insertions(+), 7 deletions(-) -- 1.7.9.5
