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Date:   Fri, 25 Dec 2020 14:59:21 +0800
From:   Jason Wang <>
To:     Yongji Xie <>
Cc:     "Michael S. Tsirkin" <>,
        Stefan Hajnoczi <>,,
        Parav Pandit <>,,
        Randy Dunlap <>,
        Matthew Wilcox <>,,,,,,,,,,
Subject: Re: [RFC v2 06/13] vduse: Introduce VDUSE - vDPA Device in Userspace

On 2020/12/24 下午4:34, Yongji Xie wrote:
>> Yes, the disadvantage is the performance. But it should be simpler (I
>> guess) and we know it can succeed.
> Yes, another advantage is that we can support the VM using anonymous memory.


>>> I think I can try this in v3. And the
>>> MMU-based IOMMU implementation can be a future optimization in the
>>> virtio-vdpa case. What's your opinion?
>> Maybe I was wrong, but I think we can try as what has been proposed here
>> first and use shadow virtqueue as backup plan if we fail.
> OK, I will continue to work on this proposal.



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