Re: [RFC PATCH 05/21] vfio/pci: Register VFIO live update file handler to Live Update Orchestrator

On Fri, Oct 17, 2025 at 5:07 PM Vipin Sharma vipinsh@google.com wrote:

+static const struct liveupdate_file_ops vfio_pci_luo_fops = {

•   .retrieve = vfio_pci_liveupdate_retrieve,
  

•   .can_preserve = vfio_pci_liveupdate_can_preserve,
  

•   .owner = THIS_MODULE,
  

+};

+static struct liveupdate_file_handler vfio_pci_luo_handler = {

•   .ops = &vfio_pci_luo_fops,
  

•   .compatible = "vfio-v1",
  

+};

+void __init vfio_pci_liveupdate_init(void) +{

•   int err = liveupdate_register_file_handler(&vfio_pci_luo_handler);
  

•   if (err)
  

•           pr_err("VFIO PCI liveupdate file handler register failed, error %d.\n", err);
  

+}

Alex and Jason, should this go in the top-level VFIO directory? And then have all the preservation logic go through vfio_device_ops? That would make Live Update support for VFIO cdev files extensible to other drivers in the future.