Messages in this thread | | | Subject | Re: [RFC PATCH 6/6] sparc64: Enable 64-bit DMA | From | tndave <> | Date | Tue, 11 Oct 2016 12:42:06 -0700 |
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On 10/11/2016 09:38 AM, Christoph Hellwig wrote: > Hi Tushar, > > On Fri, Oct 07, 2016 at 01:09:15AM -0700, tndave wrote: >> With change made by patch 6/6, dma_addr_t is always 64-bit, no matter if >> device DMA mask is 32-bit (i.e. using existing IOMMU) or 64-bit (i.e >> using ATU) > > But only iff CONFIG_ARCH_ATU is set. Anyway, I'll wait for your patches > to got in first and will then propose getting rid of > CONFIG_ARCH_DMA_ADDR_T_64BIT separately. CONFIG_ARCH_ATU is by default set on 'SPARC64'. Therefore CONFIG_ARCH_DMA_ADDR_T_64BIT is also always set as well on SPARC64.
-Tushar >
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