Re: [RFC PATCH V3 08/11] swiotlb: Add bounce buffer remap address setting function
From: Christoph Hellwig
Date: Mon Jun 14 2021 - 03:12:35 EST
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?