[PATCH v1 08/11] arm_mpam: resctrl: Correct check that existing class is L3

Gavin Shan gshan at redhat.com
Wed Jul 15 21:51:23 PDT 2026


On 7/10/26 9:55 PM, 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")
> Signed-off-by: Ben Horgan <ben.horgan at arm.com>
> ---
>   drivers/resctrl/mpam_resctrl.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 

Reviewed-by: Gavin Shan <gshan at redhat.com>




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