Re: [PATCH v2 08/12] arm_mpam: resctrl: Correct check that existing class is L3

[Gavin Shan]

On 9/18/26 12:56 AM, Ben Horgan wrote:
> The class used to back mbm_total_bytes can be either at the L3 or the
> memory. If a platform had candidate classes at both the memory and the L3
> then, as the check for whether the existing class is L3 or not in
> counter_update_class() is broken, the class that will be chosen depends on
> which order the classes are considered and so the probe order.
>
> Fix the check.
>
> Fixes: 1458c4f05335 ("arm_mpam: resctrl: Add support for csu counters")
> Tested-by: Gavin Shan <gshan@xxxxxxxxxx>
> Signed-off-by: Ben Horgan <ben.horgan@xxxxxxx>
> ---
>   drivers/resctrl/mpam_resctrl.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
Reviewed-by: Gavin Shan <gshan@xxxxxxxxxx>