VFIO_DEVICE_FEATURE_MASK
switch (flags & VFIO_DEVICE_FEATURE_MASK) {
switch (flags & VFIO_DEVICE_FEATURE_MASK) {
~(VFIO_DEVICE_FEATURE_MASK | VFIO_DEVICE_FEATURE_SET |
switch (feature.flags & VFIO_DEVICE_FEATURE_MASK) {