diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/resctrl/mpam_resctrl.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/resctrl/mpam_resctrl.c b/drivers/resctrl/mpam_resctrl.c index a9938006d0e6..4205fb2ee312 100644 --- a/drivers/resctrl/mpam_resctrl.c +++ b/drivers/resctrl/mpam_resctrl.c @@ -220,10 +220,18 @@ int resctrl_arch_set_cdp_enabled(enum resctrl_res_level rid, bool enable) if (cdp_enabled && !mpam_resctrl_controls[RDT_RESOURCE_MBA].cdp_enabled) mpam_resctrl_controls[RDT_RESOURCE_MBA].resctrl_res.alloc_capable = false; + /* + * If resctrl has attempted to enable CDP on MBA, re-enable MBA as two + * configurations will be provided so there is no aliasing problem. + */ if (mpam_resctrl_controls[RDT_RESOURCE_MBA].cdp_enabled && mpam_resctrl_controls[RDT_RESOURCE_MBA].class) mpam_resctrl_controls[RDT_RESOURCE_MBA].resctrl_res.alloc_capable = true; + /* On unmount when CDP is disabled, re-enable MBA */ + if (!cdp_enabled && mpam_resctrl_controls[RDT_RESOURCE_MBA].class) + mpam_resctrl_controls[RDT_RESOURCE_MBA].resctrl_res.alloc_capable = true; + if (enable) { if (mpam_partid_max < 1) return -EINVAL; |