Re: [PATCH v1 5/8] iommu/amd: Use iommu_attach/detach_device()

[Joerg Roedel]

On Thu, Jan 06, 2022 at 10:33:45AM -0400, Jason Gunthorpe wrote:
> But I'm not sure how this can work with multi-device groups - this
> seems to assigns a domain setup for direct map, so perhaps this only
> works if all devices are setup for direct map?

Right, at boot all devices in this group are already setup for using a
direct map. There are usually two devices in those groups, the GPU
itself and the sound device for HDMI sound output.

Regards,

	Joerg