[PATCH v2 20/29] arm_mpam: Allow configuration to be applied and restored during cpu online

[Ben Horgan]

Hi James,

On 9/10/25 21:43, James Morse wrote:
> When CPUs come online the MSC's original configuration should be restored.
> 
> Add struct mpam_config to hold the configuration. This has a bitmap of
> features that were modified. Once the maximum partid is known, allocate
> a configuration array for each component, and reprogram each RIS
> configuration from this.
> 
> CC: Dave Martin <Dave.Martin at arm.com>
> Signed-off-by: James Morse <james.morse at arm.com>
> ---
> Changes since v1:
>  * Switched entry_rcu to srcu versions.
> 
> Changes since RFC:
>  * Added a comment about the ordering around max_partid.
>  * Allocate configurations after interrupts are registered to reduce churn.
>  * Added mpam_assert_partid_sizes_fixed();
>  * Make reset use an all-ones instead of zero config.
> ---
>  drivers/resctrl/mpam_devices.c  | 269 +++++++++++++++++++++++++++++---
>  drivers/resctrl/mpam_internal.h |  29 +++-
>  2 files changed, 271 insertions(+), 27 deletions(-)
> 

Reviewed-by: Ben Horgan <ben.horgan at arm.com>
Thanks,

Ben