Re: [RFC patch 8/9] selftests/resctrl: Add support for HiSilicon MBM/MBA test

Hi Yifan,

On 3/23/26 2:19 AM, wuyifan wrote:

Hi Reinette,

On 3/13/2026 5:01 AM, Reinette Chatre wrote:

quoted

Which baseline exposes MB_MON in resctrl?

Reinette

In the MPAM architecture reference manual, the memory-system component
includes the cache and memory channel controller, among others. The memory
channel controller can implement a memory bandwidth usage monitor.
I noticed that arm_mpam maps other classes to l3 in the resctrl glue code,
so I will fix this in the next version.

Were these tests written against a spec as opposed to the actual MPAM enabling
code? How could it have been tested?

Reinette