On Mon, Dec 11, 2023 at 05:47:15PM +0000, Michael Margolin wrote: > diff --git a/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h b/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h > index 9c65bd27bae0..597f7ca6f31d 100644 > --- a/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h > +++ b/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h > @@ -415,6 +415,32 @@ struct efa_admin_reg_mr_resp { > * memory region > */ > u32 r_key; > + > + /* > + * Mask indicating which fields have valid values > + * 0 : recv_pci_bus_id > + * 1 : rdma_read_pci_bus_id > + * 2 : rdma_recv_pci_bus_id > + */ > + u8 validity; > + > + /* > + * Physical PCIe bus used by the device to reach the MR for receive > + * operation > + */ > + u8 recv_pci_bus_id; > + > + /* > + * Physical PCIe bus used by the device to reach the MR for RDMA read > + * operation > + */ > + u8 rdma_read_pci_bus_id; > + > + /* > + * Physical PCIe bus used by the device to reach the MR for RDMA write > + * receive > + */ > + u8 rdma_recv_pci_bus_id; What driver is bound to this other PCIe bus and how did the iommu get setup for it? Jason