On Sat, Feb 22, 2025 at 07:54:02AM -0800, Nicolin Chen wrote:
Introduce a new IOMMUFD_OBJ_VEVENTQ object for vIOMMU Event Queue that provides user space (VMM) another FD to read the vIOMMU Events.
Allow a vIOMMU object to allocate vEVENTQs, with a condition that each vIOMMU can only have one single vEVENTQ per type.
Add iommufd_veventq_alloc() with iommufd_veventq_ops for the new ioctl.
Reviewed-by: Lu Baolu baolu.lu@linux.intel.com Reviewed-by: Kevin Tian kevin.tian@intel.com Signed-off-by: Nicolin Chen nicolinc@nvidia.com
drivers/iommu/iommufd/iommufd_private.h | 82 ++++++++++ include/linux/iommufd.h | 3 + include/uapi/linux/iommufd.h | 82 ++++++++++ drivers/iommu/iommufd/eventq.c | 209 +++++++++++++++++++++++- drivers/iommu/iommufd/main.c | 7 + drivers/iommu/iommufd/viommu.c | 2 + 6 files changed, 384 insertions(+), 1 deletion(-)
Reviewed-by: Jason Gunthorpe jgg@nvidia.com
Jason