Hi Reinette, On 7/15/25 11:26, Reinette Chatre wrote: > Hi Babu, > > On 7/8/25 3:17 PM, Babu Moger wrote: >> ABMC feature details are reported via CPUID Fn8000_0020_EBX_x5. >> Bits Description >> 15:0 MAX_ABMC Maximum Supported Assignable Bandwidth >> Monitoring Counter ID + 1 >> >> The feature details are documented in APM listed below [1]. >> [1] AMD64 Architecture Programmer's Manual Volume 2: System Programming >> Publication # 24593 Revision 3.41 section 19.3.3.3 Assignable Bandwidth >> Monitoring (ABMC). >> >> Detect the feature and number of assignable counters supported. Also, >> enable QOS_L3_MBM_TOTAL_EVENT_ID and QOS_L3_MBM_LOCAL_EVENT_ID upon >> detecting the ABMC feature. The current expectation is to support >> these two events by default when ABMC is enabled. >> > > Did the right patches make it out as part of this submission? The above > changelog contains text that was removed per > https://lore.kernel.org/lkml/aca368e0-0936-4852-9cf6-688931e0c65d@xxxxxxx/ Yes. Code changes are taken care. v15: Minor update to changelog. Added check in resctrl_cpu_detect(). Moved the resctrl_enable_mon_event() to resctrl_mon_resource_init(). But missed the changelog. Sorry about that. Here is the updated version. -------------------------------- x86,fs/resctrl: Detect Assignable Bandwidth Monitoring feature details ABMC feature details are reported via CPUID Fn8000_0020_EBX_x5. Bits Description 15:0 MAX_ABMC Maximum Supported Assignable Bandwidth Monitoring Counter ID + 1 The feature details are documented in APM listed below [1]. [1] AMD64 Architecture Programmer's Manual Volume 2: System Programming Publication # 24593 Revision 3.41 section 19.3.3.3 Assignable Bandwidth Monitoring (ABMC). Detect the feature and number of assignable counters supported. For backward compatibility, upon detecting the assignable counter feature, enable the mbm_total_bytes and mbm_local_bytes events that users are familiar with as part of original L3 MBM support. Link: https://bugzilla.kernel.org/show_bug.cgi?id=206537 Signed-off-by: Babu Moger <babu.moger@xxxxxxx> -- Thanks Babu Moger
