On Thu, Oct 17, 2024 at 08:35:24PM +0800, Zhangfei Gao wrote: > Yes, you are right > I am using SRIOV vf and stall feature, so is_virtfn == true > > Our ACC devices are fake pci endpoint devices which supports stall, > And they also supports sriov > > So I have to ignore the limitation. I see, so that is more complicated. Lu, what do you think about also checking if the PCI function has PRI ? If not PRI assume the fault is special and doesn't follow PRI rules? Or maybe we can have the iommu driver tag the event as a PRI/not-PRI fault? Jason