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SubjectRe: [PATCH v1 0/8] Add IO page table replacement support
On Fri, Feb 03, 2023 at 08:09:30AM +0000, Tian, Kevin wrote:
> > From: Nicolin Chen <nicolinc@nvidia.com>
> > Sent: Thursday, February 2, 2023 3:05 PM
> >
> > QEMU with this feature should have the vIOMMU maintain a cache of the
> > guest io page table addresses and assign a unique IOAS to each unique
> > guest page table.
>
> I didn't get why we impose such requirement to userspace.

I read this as implementation guidance for qemu. qemu can do what it
wants of course

Jason

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