Re: [PING] PCI: Fix procfs PCI config access issues

在 2026/7/30 11:24, Ziming Du 写道:
> Hi,
>
> As suggested by Bjorn and Krzysztof, this series aligns the procfs PCI
> configuration access implementation with its sysfs counterpart and fixes
> issues found while reviewing the two paths.
>
> The first four patches fix the offset truncation, inode size update race,
> missing driver-exclusive resource warning, and unnecessary runtime PM
> operations at the end of sysfs configuration space. The final two
> patches align the procfs read and write implementations with their sysfs
> counterparts.
>
> Changes from v1:
>    - Merge the read and write offset fixes and move them before the
>      refactoring to avoid an intermediate signed/unsigned regression.
>    - Serialize i_size_write() with the inode lock.
>    - Add the driver-exclusive resource warning to procfs writes.
>    - Avoid unnecessary runtime PM get/put when sysfs config access starts at EOF.
>
> Link: https://lore.kernel.org/all/20260303193253.GA3817951@bhelgaas/
> Link: https://lore.kernel.org/linux-pci/[email protected]/
> Link: https://sashiko.dev/#/patchset/20260414024544.2975605-1-duziming2%40huawei.com
>
>
> Ziming Du (6):
>    PCI: Prevent overflow in proc_bus_pci_{read,write}()
>    PCI/proc: Serialize config inode size updates
>    PCI/proc: Warn on writes to driver-exclusive config regions
>    PCI/sysfs: Avoid runtime PM at config-space EOF
>    PCI: Align proc_bus_pci_write() with pci_write_config()
>    PCI: Align proc_bus_pci_read() with pci_read_config()
>
>   drivers/pci/pci-sysfs.c |   4 +-
>   drivers/pci/proc.c      | 124 +++++++++++++++++++++-------------------
>   2 files changed, 68 insertions(+), 60 deletions(-)

Hi,

Gentle ping on this patch.

Thanks

Ziming