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Re: [PATCH V3 09/13] DMA: Add dma_map_decrypted/dma_unmap_encrypted() function

On 8/12/2021 8:26 PM, Christoph Hellwig wrote:
On Mon, Aug 09, 2021 at 01:56:13PM -0400, Tianyu Lan wrote:
From: Tianyu Lan <Tianyu.Lan@xxxxxxxxxxxxx>

In Hyper-V Isolation VM with AMD SEV, swiotlb boucne buffer
needs to be mapped into address space above vTOM and so
introduce dma_map_decrypted/dma_unmap_encrypted() to map/unmap
bounce buffer memory. The platform can populate man/unmap callback
in the dma memory decrypted ops.

Nothing here looks actually DMA related, and the names are horribly
confusing vs the actual dma_map_* calls.

OK. So this still need to keep in the set_memory.c file.



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