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Some devices support both symmetric (same value for all PFs) and asymmetric, while others only support symmetric configuration. This implementation prefers asymmetric, since it is closer to the devlink model (per function settings), but falls back to symmetric when needed. Example usage: devlink dev param set pci/0000:01:00.0 name total_vfs value <u16> cmode permanent devlink dev reload pci/0000:01:00.0 action fw_activate echo 1 >/sys/bus/pci/devices/0000:01:00.0/remove echo 1 >/sys/bus/pci/rescan cat /sys/bus/pci/devices/0000:01:00.0/sriov_totalvfs Signed-off-by: Vlad Dumitrescu <vdumitrescu@nvidia.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Tested-by: Kamal Heib <kheib@redhat.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250907012953.301746-5-saeed@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>