[PATCH v9 03/13] PCI: liveupdate: Track incoming preserved PCI devices

[sashiko-bot at kernel.org]

> During PCI enumeration, the previous kernel might have passed state about
> devices that were preserved across kexec. The PCI core needs to fetch
> this state to identify which devices are "incoming" and require special
> handling.
> 
> Add pci_liveupdate_setup_device() which is called during device setup
> to fetch the serialized state (struct pci_ser) from the Live Update
> Orchestrator. The first time this happens, pci_flb_retrieve() will run
> and convert the array of pci_dev_ser structs into an xarray so that it
> can be looked up efficiently.
> 
> If a device is found in the xarray, the PCI core stores a pointer to its
> state in dev->liveupdate_incoming until pci_liveupdate_finish() is
> called by the driver. This pointer allows the PCI core and drivers to
> apply Live Update-specific logic to incoming devices in subsequent
> [ ... ]
> as the xarray key.
> 
> Reviewed-by: Pranjal Shrivastava <praan at google.com>
> Reviewed-by: Samiullah Khawaja <skhawaja at google.com>
> Signed-off-by: David Matlack <dmatlack at google.com>

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

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260918200640.887030-1-dmatlack@google.com?part=3