I'm running a ubuntu 15.10 VM and testing code that will allocate 1MB dma buffers. However, from the /proc/slabinfo, the max that can be allocated is 8K
dma-kmalloc-8192 0 0 8192 4 8 : tunables 0 0 0 : slabdata 0 0 0
dma-kmalloc-4096 0 0 4096 8 8 : tunables 0 0 0 : slabdata 0 0 0
dma-kmalloc-2048 0 0 2048 16 8 : tunables 0 0 0 : slabdata 0 0 0
dma-kmalloc-1024 0 0 1024 16 4 : tunables 0 0 0 : slabdata 0 0 0
dma-kmalloc-512 16 16 512 16 2 : tunables 0 0 0 : slabdata 1 1 0
Does anyone know how to enable dma-kmalloc-1048576?
Thanks