Hi Babu, On 7/25/25 11:29 AM, Babu Moger wrote: > The ABMC feature allows users to assign a hardware counter to an RMID, > event pair and monitor bandwidth usage as long as it is assigned. The > hardware continues to track the assigned counter until it is explicitly > unassigned by the user. > > Implement an x86 architecture-specific handler to configure a counter. This > architecture specific handler is called by resctrl fs when a counter is > assigned or unassigned as well as when an already assigned counter's > configuration should be updated. Configure counters by writing to the > L3_QOS_ABMC_CFG MSR, specifying the counter ID, bandwidth source (RMID), > and event configuration. > > The feature details are documented in the 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). > > 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
