Re: [PATCH v2] iommu/dma: Add config for PCI SAC address trick

[Joerg Roedel]

On Wed, Jun 22, 2022 at 02:12:39PM +0100, Robin Murphy wrote:
> Thanks for your bravery!

It already starts, with that patch I am getting:

	xhci_hcd 0000:02:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000f address=0xff00ffffffefe000 flags=0x0000]

In my kernel log. The device is an AMD XHCI controller and seems to
funciton normally after boot. The message disappears with
iommu.forcedac=0.

Need to look more into that...