[PATCH v5 11/34] arm_mpam: Add the class and component structures for firmware described ris

Fenghua Yu fenghuay at nvidia.com
Mon Nov 17 20:11:02 PST 2025



On 11/17/25 08:59, Ben Horgan wrote:
> From: James Morse <james.morse at arm.com>
> 
> An MSC is a container of resources, each identified by their RIS index.
> Some RIS are described by firmware to provide their position in the system.
> Others are discovered when the driver probes the hardware.
> 
> To configure a resource it needs to be found by its class, e.g. 'L2'.
> There are two kinds of grouping, a class is a set of components, which
> are visible to user-space as there are likely to be multiple instances
> of the L2 cache. (e.g. one per cluster or package)
> 
> Add support for creating and destroying structures to allow a hierarchy
> of resources to be created.
> 
> Reviewed-by: Gavin Shan <gshan at redhat.com>
> Reviewed-by: Jonathan Cameron <jonathan.cameron at huawei.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: James Morse <james.morse at arm.com>
> Signed-off-by: Ben Horgan <ben.horgan at arm.com>
Reviewed-by: Fenghua Yu <fenghuay at nvidia.com>

Thanks.

-Fenghua



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