netdev - Re: [PATCH V3 09/13] DMA: Add dma_map_decrypted/dma_unmap

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Message-ID: <0598906d-9a47-34a9-16bf-4bacff7fa058@gmail.com>
Date:   Thu, 12 Aug 2021 23:38:27 +0800
From:   Tianyu Lan <ltykernel@...il.com>
To:     Christoph Hellwig <hch@....de>
Cc:     kys@...rosoft.com, haiyangz@...rosoft.com, sthemmin@...rosoft.com,
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Subject: 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@...rosoft.com>
>>
>> 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.