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MPAM has an error interrupt which indicates > the MPAM driver has gone haywire. Should this occur tasks could run with > the wrong control values, leading to bad performance for impoartant tasks. impoartant -> important > The MPAM driver needs a way to tell resctrl that no further configuration > should be attempted. > > Using resctrl_exit() for this leaves the system in a funny state as > resctrl is still mounted, but cannot be un-mounted because the sysfs > directory that is typically used has been removed. Dave Martin suggests > this may cause systemd trouble in the future as not all filesystems > can be unmounted. > > Add calls to remove all the files and directories in resctrl, and > remove the sysfs_remove_mount_point() call that leaves the system > in a funny state. When triggered, this causes all the resctrl files > to disappear. resctrl can be unmounted, but not mounted again. I am not familiar with these flows so I would like to confirm ... In this scenario the resctrl filesystem will be unregistered, are you saying that it is possible to unmount a filesystem after it has been unregistered? Reinette