Re: [PATCH for-next v3] RDMA/efa: Add EFA query MR support

[Jason Gunthorpe <jgg@nvidia.com>]

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