Re: [RFC PATCH V3 08/11] swiotlb: Add bounce buffer remap address setting function

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On Mon, Jun 07, 2021 at 10:56:47PM +0800, Tianyu Lan wrote:
> These addresses in extra address space works as system memory mirror. The 
> shared memory with host in Isolation VM needs to be accessed via extra 
> address space which is above shared gpa boundary.

Why?



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