Hi Babu, On 8/14/25 7:25 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. 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> > --- Reviewed-by: Reinette Chatre <reinette.chatre@xxxxxxxxx> Reinette
