> From: Liu, Yi L <yi.l....@intel.com> > Sent: Tuesday, March 28, 2023 11:32 AM > > > From: Alex Williamson <alex.william...@redhat.com> > > Sent: Tuesday, March 28, 2023 3:26 AM > > > > Additionally, VFIO_DEVICE_GET_PCI_HOT_RESET_INFO has a flags arg that > > isn't used, why do we need a new ioctl vs defining > > VFIO_PCI_HOT_RESET_FLAG_IOMMUFD_DEV_ID. > > Sure. I can follow this suggestion. BTW. I have a doubt here. This new flag > is set by user. What if in the future kernel has new extensions and needs > to report something new to the user and add new flags to tell user? Such > flag is set by kernel. Then the flags field may have two kinds of flags (some > set by user while some set by kernel). Will it mess up the flags space? >
flags in a GET_INFO ioctl is for output. if user needs to use flags as input to select different type of info then it should be split into multiple GET_INFO cmds.
