Thank you for raising this important concern. 
To confirm: Our vendor driver (NBL PMD) is actively being upstreamed to DPDK. This patch is required for its coexistence implementation. We kindly request to merge this foundational change first to enable the driver submission.
We will follow up with the full NBL driver code within 4 weeks. 
Thank you for your consideration.

------------------------------------------------------------------
发件人：Stephen Hemminger <stephen@networkplumber.org>
发送时间：2025年4月28日(周一) 23:55
收件人："Kyo.Liu"<kyo.liu@nebula-matrix.com>
抄　送：Thomas Monjalon<thomas@monjalon.net>; Chenbo Xia<chenbox@nvidia.com>; Nipun Gupta<nipun.gupta@amd.com>; dev<dev@dpdk.org>
主　题：Re: [PATCH v3 1/1] bus/pci: introduce get_iova_mode for pci dev


On Sun, 27 Apr 2025 02:27:34 +0000
Kyo Liu <kyo.liu@nebula-matrix.com> wrote:

> I propose this patch for DPDK to enable coexistence between
> DPDK and kernel drivers for regular NICs.This solution requires
> adding a new pci_ops in rte_pci_driver, through which DPDK will
> retrieve the required IOVA mode from the vendor driver.
> This mechanism is necessary to handle different IOMMU
> configurations and operating modes. Below is a detailed
> analysis of various scenarios:

The words "vendor driver" have me worried.
Is this a PMD that is being incorporated into DPDK or some out
of tree driver. If it is out of tree, such changes will be summarily rejected.
We don't accept changes that are unused in tree.