On Thu, May 03, 2018 at 09:46:34AM -0400, Sinan Kaya wrote: > I also like the idea in general. > Minor nit.. > > Shouldn't this be an iommu parameter rather than a PCI kernel command line parameter? > We now have an iommu.passthrough argument that prevents page translation. > > Doesn't this fit into the same category especially when it is the IOMMU drivers that > call ATS functions for enablement not the PCI drivers. ATS is a bit of a grey area between PCI and IOMMU, but since ATS is PCI-specific and the code to enable/disable it is in PCI as well, I think the parameter makes sense for PCI too. Joerg
