On Wed, 21 Nov 2018, Robin Murphy wrote:

On 21/11/2018 17:38, Christopher Lameter wrote:

quoted

On Wed, 21 Nov 2018, Will Deacon wrote:

quoted

quoted

+#define ARM_V7S_TABLE_SLAB_CACHE SLAB_CACHE_DMA32

SLAB_CACHE_DMA32??? WTH is going on here? We are trying to get rid of
the dma slab array.

See the previous two patches in this series. If there's already a (better) way
to have a kmem_cache which allocates its backing pages with GFP_DMA32, please
do let us know.

Was not cced on the whole patchset. Trying to find it. Its best to
allocate DMA memory through the page based allocation functions.
dma_alloc_coherent() and friends.