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.