Re: [PATCH v2 19/29] arm_mpam: Use a static key to indicate when mpam is enabled

James Morse
2025-10-03T18:03:54Z

Hi Ben,

On 12/09/2025 15:42, Ben Horgan wrote:
> On 9/10/25 21:42, James Morse wrote:
>> Once all the MSC have been probed, the system wide usable number of
>> PARTID is known and the configuration arrays can be allocated.
>>
>> After this point, checking all the MSC have been probed is pointless,
>> and the cpuhp callbacks should restore the configuration, instead of
>> just resetting the MSC.
>>
>> Add a static key to enable this behaviour. This will also allow MPAM
>> to be disabled in repsonse to an error, and the architecture code to
>> enable/disable the context switch of the MPAM system registers.

> Reviewed-by: Ben Horgan <ben.horgan@arm.com>

Thanks!

James