Hi, I'm wondering why dma_alloc_coherent needs GFP_HIGHUSER | __GFP_ZERO flags in ion_cma_allocate(). I think dma_alloc_coherent can go to __dma_alloc if the system has CMA area. If __GFP_WAIT flag is set, it allocates memory from atomic pool. So I think calling dma_alloc_coherent with __GFP_WAIT is enough. And can I get zero-filled-memory from CMA if I set __GFP_ZERO? -- Thanks, Gioh Kim _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
