On Wed, Sep 04, 2024 at 10:03:29AM -0300, Jason Gunthorpe wrote: > Why is this a kernel command line? Surely it should be negotiated > automaticaly with capability registers or ACPI like everone else does > if there is something functionally wrong with the vIOMMU?? In the affected setups there is no vIOMMU. This is not about secure-IO, the assigned devices will not be part of the trusted base. > If we are doing this we also have a problem on mlx5 devices where > there are too many page sizes in the v1 table and it blows up the ATS > caching. It would be nice to widen this option to limit the page sizes > to other combinations (4k/2M/1G or something). Okay, I will update the patch to allow more settings. Regards, Joerg
