On Tue, Jul 28, 2026 at 10:09:56PM +0000, David Matlack wrote: > Add APIs to allow drivers to notify the PCI core of which devices are > being preserved across a Live Update for the next kernel, i.e. > "outgoing" devices. > > Drivers must notify the PCI core when devices are preserved so that the > PCI core can update its FLB data (struct pci_ser) and track the list of > outgoing devices. pci_liveupdate_preserve() notifies the PCI core that a > device must be preserved across Live Update. pci_liveupdate_unpreserve() > reverses this (cancels the preservation of the device). > > This tracking ensures the PCI core is fully aware of which devices may > need special handling during shutdown and kexec, and so the list of > preserved devices can be handed off to the next kernel. > > For now, the API only supports preserving non-VF devices on a root bus > (not behind an PCI-to-PCI bridges).
s/an// > Reviewed-by: Pranjal Shrivastava <[email protected]> > Reviewed-by: Pasha Tatashin <[email protected]> > Reviewed-by: Bjorn Helgaas <[email protected]> > Signed-off-by: David Matlack <[email protected]>
