[PATCH v5 24/34] arm_mpam: Probe and reset the rest of the features

[Fenghua Yu]

On 11/17/25 09:00, Ben Horgan wrote:
> From: James Morse <james.morse at arm.com>
> 
> MPAM supports more features than are going to be exposed to resctrl.
> For partid other than 0, the reset values of these controls isn't
> known.
> 
> Discover the rest of the features so they can be reset to avoid any
> side effects when resctrl is in use.
> 
> PARTID narrowing allows MSC/RIS to support less configuration space than
> is usable. If this feature is found on a class of device we are likely
> to use, then reduce the partid_max to make it usable. This allows us
> to map a PARTID to itself.
> 
> CC: Rohit Mathew <Rohit.Mathew at arm.com>
> CC: Zeng Heng <zengheng4 at huawei.com>
> CC: Dave Martin <Dave.Martin at arm.com>
> Signed-off-by: James Morse <james.morse at arm.com>
> Reviewed-by: Jonathan Cameron <jonathan.cameron at huawei.com>
> Reviewed-by: Gavin Shan <gshan at redhat.com>
> Reviewed-by: Shaopeng Tan <tan.shaopeng at jp.fujitsu.com>
> Tested-by: Fenghua Yu <fenghuay at nvidia.com>
> Tested-by: Shaopeng Tan <tan.shaopeng at jp.fujitsu.com>
> Tested-by: Peter Newman <peternewman at google.com>
> Tested-by: Carl Worth <carl at os.amperecomputing.com>
> Tested-by: Gavin Shan <gshan at redhat.com>
> Tested-by: Zeng Heng <zengheng4 at huawei.com>
> Signed-off-by: Ben Horgan <ben.horgan at arm.com>

Reviewed-by: Fenghua Yu <fenghuay at nvidia.com>

Thanks.

-Fenghua