Messages in this thread | | | Date | Wed, 17 Nov 2021 22:00:08 +0800 | Subject | Re: [PATCH 3/5] hyperv/IOMMU: Enable swiotlb bounce buffer for Isolation VM | From | Tianyu Lan <> |
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On 11/17/2021 6:01 PM, Christoph Hellwig wrote: > This doesn't really have much to do with normal DMA mapping, > so why does this direct through the dma ops? >
According to the previous discussion, dma_alloc_noncontigous() and dma_vmap_noncontiguous() may be used to handle the noncontigous memory alloc/map in the netvsc driver. So add alloc/free and vmap/vunmap callbacks here to handle the case. The previous patch v4 & v5 handles the allocation and map in the netvsc driver. If this should not go though dma ops, We also may make it as vmbus specific function and keep the function in the vmbus driver.
https://lkml.org/lkml/2021/9/28/51
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