> From: Chatre, Reinette <reinette.chatre@xxxxxxxxx> > Sent: Friday, April 28, 2023 1:36 AM > > struct vfio_pci_core_device contains eleven boolean flags. > Boolean flags clearly indicate their usage but space usage > starts to be a concern when there are many. > > An upcoming change adds another boolean flag to > struct vfio_pci_core_device, thereby increasing the concern > that the boolean flags are consuming unnecessary space. > > Transition the boolean flags to use bitfields. On a system that > uses one byte per boolean this reduces the space consumed > by existing flags from 11 bytes to 2 bytes with room for > a few more flags without increasing the structure's size. > > Suggested-by: Jason Gunthorpe <jgg@xxxxxxxxxx> > Signed-off-by: Reinette Chatre <reinette.chatre@xxxxxxxxx> Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
