Re: [RFC PATCH 5/5] vfio/pci: Use pci_reset_supported() in place of reset_works

[sashiko-bot@kernel.org]

> vfio-pci latches whether pci_reset_function() works at open device and
> makes decisions based on this latched value at runtime.  With the
> introduction of the reset_method pci-sysfs attribute, this flag can
> be made stale at runtime by administrative action.  Further, with the
> SR-IOV active VFs gating of pci_reset_function(), the flag can be made
> stale via more subtle dependencies.
> 
> Drop the latched flag and rely on pci_reset_supported() to indicate
> whether reset methods exist for the device.  This is no guarantee that
> those reset methods work, nor has the RESET flag in struct
> vfio_device_info ever been a guarantee of VFIO_DEVICE_RESET success.
> It's only a guarantee that there are reset methods that are
> applicable to the device at the instant it's called.
> 
> Assisted-by: Claude:claude-opus-4-8
> Signed-off-by: Alex Williamson <alex.williamson@nvidia.com>

Sashiko has reviewed this patch and found no issues. It looks great!

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Sashiko AI review · https://sashiko.dev/#/patchset/20260812045325.2733631-1-alex.williamson@nvidia.com?part=5