On Thu, 2018-05-10 at 10:31 -0400, Jerome Glisse wrote:
>
> Could you bisect ? I would love to point finger upstream to the DMA
> folk who made changes to that API without testing with GPU.
Rummaging a bit, it might be...
nouveau_bo_new()
...
ttm_dma_pool_alloc_new_pages()
dma_alloc_attrs()
ops->alloc() == x86_swiotlb_alloc_coherent()
x86_swiotlb_alloc_coherent() flags |= __GFP_NOWARN;
swiotlb_alloc_coherent(..flags)
swiotlb_alloc_coherent(..flags) attrs = (flags & __GFP_NOWARN) ?
DMA_ATTR_NO_WARN : 0;
swiotlb_alloc_buffer(..attr)
swiotlb_alloc_buffer(..0) <== hm, pass zero instead of attr?
swiotlb_tbl_map_single() gripeage
...that?
-Mike
