Re: [PATCH V2 10/14] DMA: Add dma_map_decrypted/dma_unmap_encrypted() function

Hi Christoph: Could you have a look at this patch? It adds new API dma_map_decrypted() to do memory decrypted and remap. It will be used in the swiotlb code. Thanks. On 8/5/2021 2:45 AM, Tianyu Lan wrote: From: Tianyu Lan In Hyper-V Isolation VM with AMD SEV, swiotlb boucne buffer need

[PATCH V2 10/14] DMA: Add dma_map_decrypted/dma_unmap_encrypted() function

From: Tianyu Lan 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.