On Mon, Apr 08, 2019 at 01:37:25PM +0300, Nikolai Kostrigin wrote: > ATS is broken on this hardware (at least for Stoney Ridge > based laptop) and causes IOMMU stalls and > system failure. Disable ATS on these devices to make them > usable again with IOMMU enabled > Thanks to Joerg Roedel <jroedel@xxxxxxx> for help. > > https://bugzilla.kernel.org/show_bug.cgi?id=194521 > > Signed-off-by: Nikolai Kostrigin <nickel@xxxxxxxxxxxx> Acked-by: Joerg Roedel <jroedel@xxxxxxx> I helped Nikolai with tracking this issue down to ATS handling and suggested adding the quirk.
