On Mon, Feb 06, 2023 at 06:39:29AM +0000, Tian, Kevin wrote:
From: Jason Gunthorpe jgg@nvidia.com Sent: Friday, February 3, 2023 11:04 PM
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
sure but I still didn't get why this is a guidance specific to the new replace cmd...
I think the guidance is about the change to VFIO uAPI where it is now possible to change the domain attached, previously that was not possible
Jason