e402d55c84
Save the value of the IOV control and page size registers and restore them (along with the VF count) in pci_cfg_save/pci_cfg_restore. This ensures ARI remains enabled if a PF driver resets itself during the PCI_IOV_INIT callback. This might also properly restore SRIOV state across suspend/resume. Reviewed by: rstone, vangyzen Differential Revision: https://reviews.freebsd.org/D6192