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Date:   Thu, 30 Sep 2021 07:48:21 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Tianyu Lan <ltykernel@gmail.com>
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Subject: Re: [PATCH V5 12/12] net: netvsc: Add Isolation VM support for
 netvsc driver
Message-ID: <20210930054821.GA22332@lst.de>
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On Tue, Sep 28, 2021 at 05:23:31PM +0800, Tianyu Lan wrote:
>>
>>   - the bare memremap usage in swiotlb looks strange and I'd
>>     definitively expect a well documented wrapper.
>
> OK. Should the wrapper in the DMA code? How about dma_map_decrypted() 
> introduced in the V4?

A mentioned then the name is a pretty bad choice as it touches the dma_map*
namespace that it is not related to.  I suspect just a little helper
in the swiotlb code that explains how it is used might be enogh for now.