On Mon, Sep 09, 2024 at 08:59:32PM +0800, Yi Liu wrote: > In order to synthesize the vPASID cap, the VMM should get to know the > capabilities like Privilege mode, Execute permission from the physical > device's config space. We have two choices as well. vfio or iommufd. > > It appears to be better reporting the capabilities via vfio uapi (e.g. > VFIO_DEVICE_FEATURE). If we want to go through iommufd, then we need to > add a pair of data_uptr/data_size fields in the GET_HW_INFO to report the > PASID capabilities to userspace. Please let me know your preference. :) I don't think you'd need a new data_uptr, that doesn't quite make sense What struct data do you imagine needing? Jason
