Re: [PATCH 08/10] swiotlb: don't dip into swiotlb pool for coherent allocations

On 08/10/2018 09:02, Christoph Hellwig wrote: All architectures that support swiotlb also have a zone that backs up these less than full addressing allocations (usually ZONE_DMA32). Because of that it is rather pointless to fall back to the global swiotlb buffer if the normal dma direct

Re: [PATCH 08/10] swiotlb: don't dip into swiotlb pool for coherent allocations

On Mon, Oct 08, 2018 at 10:02:44AM +0200, Christoph Hellwig wrote: > All architectures that support swiotlb also have a zone that backs up > these less than full addressing allocations (usually ZONE_DMA32). > > Because of that it is rather pointless to fall back to the global swiotlb > buffer if

Re: [PATCH 08/10] swiotlb: don't dip into swiotlb pool for coherent allocations

On Mon, Oct 08, 2018 at 10:02:44AM +0200, Christoph Hellwig wrote: > All architectures that support swiotlb also have a zone that backs up > these less than full addressing allocations (usually ZONE_DMA32). > > Because of that it is rather pointless to fall back to the global swiotlb > buffer if

[PATCH 08/10] swiotlb: don't dip into swiotlb pool for coherent allocations

All architectures that support swiotlb also have a zone that backs up these less than full addressing allocations (usually ZONE_DMA32). Because of that it is rather pointless to fall back to the global swiotlb buffer if the normal dma direct allocation failed - the only thing this will do is to