linux-kernel - Re: [PATCH 19/21] vfio: selftests: Expose low-level helper routines for setting up struct vfio_pci

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Message-ID: <2779d6a2-d734-4334-befc-99f958e1d1ef@linux.dev>
Date: Mon, 5 Jan 2026 16:07:55 -0800
From: "Yanjun.Zhu" <yanjun.zhu@...ux.dev>
To: David Matlack <dmatlack@...gle.com>
Cc: Alex Williamson <alex@...zbot.org>,
 Adithya Jayachandran <ajayachandra@...dia.com>, Alex Mastro
 <amastro@...com>, Alistair Popple <apopple@...dia.com>,
 Andrew Morton <akpm@...ux-foundation.org>,
 Bjorn Helgaas <bhelgaas@...gle.com>, Chris Li <chrisl@...nel.org>,
 David Rientjes <rientjes@...gle.com>,
 Jacob Pan <jacob.pan@...ux.microsoft.com>, Jason Gunthorpe <jgg@...dia.com>,
 Jason Gunthorpe <jgg@...pe.ca>, Josh Hilke <jrhilke@...gle.com>,
 Kevin Tian <kevin.tian@...el.com>, kvm@...r.kernel.org,
 Leon Romanovsky <leonro@...dia.com>, linux-kernel@...r.kernel.org,
 linux-kselftest@...r.kernel.org, linux-pci@...r.kernel.org,
 Lukas Wunner <lukas@...ner.de>, Mike Rapoport <rppt@...nel.org>,
 Parav Pandit <parav@...dia.com>, Pasha Tatashin <pasha.tatashin@...een.com>,
 Philipp Stanner <pstanner@...hat.com>, Pratyush Yadav <pratyush@...nel.org>,
 Saeed Mahameed <saeedm@...dia.com>, Samiullah Khawaja <skhawaja@...gle.com>,
 Shuah Khan <shuah@...nel.org>, Tomita Moeko <tomitamoeko@...il.com>,
 Vipin Sharma <vipinsh@...gle.com>, William Tu <witu@...dia.com>,
 Yi Liu <yi.l.liu@...el.com>, Yunxiang Li <Yunxiang.Li@....com>
Subject: Re: [PATCH 19/21] vfio: selftests: Expose low-level helper routines
 for setting up struct vfio_pci_device


On 1/5/26 9:54 AM, David Matlack wrote:
> On Sat, Dec 27, 2025 at 8:04 PM Zhu Yanjun <yanjun.zhu@...ux.dev> wrote:
>> 在 2025/11/26 11:36, David Matlack 写道:
>>> @@ -349,9 +351,20 @@ struct vfio_pci_device *__vfio_pci_device_init(const char *bdf,
>>>        device->bdf = bdf;
>>>        device->iommu = iommu;
>>>
>>> +     return device;
>>> +}
>>> +
>> In the latest kernel, this part changes too much.
> Can you clarify what you mean by "changes too much"? What is the issue?

I tried to apply this commit to the linux and linux-next repositories 
and run tests.

However, I’m unable to apply [PATCH 19/21] vfio: selftests: Expose 
low-level helper routines for setting up struct vfio_pci_device, because 
the related source code has changed significantly in both linux and 
linux-next.

If you plan to resend this patch series based on the latest linux or 
linux-next, please feel free to ignore this comment.

I look forward to testing the updated patch series once it is available.

Best Regards,

Yanjun.Zhu