Messages in this thread | | | Date | Mon, 20 Nov 2023 14:24:15 -0800 | Subject | Re: [PATCH v11 7/8] x86/resctrl: Sub NUMA Cluster detection and enable | From | Reinette Chatre <> |
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Hi Tony,
On 11/9/2023 3:09 PM, Tony Luck wrote: > There isn't a simple hardware bit that indicates whether a CPU is > running in Sub NUMA Cluster (SNC) mode. Infer the state by comparing > the ratio of NUMA nodes to L3 cache instances. > > When SNC mode is detected, reconfigure the RMID counters by updating > the MSR_RMID_SNC_CONFIG MSR on each socket as CPUs are seen. > > Clearing bit zero of the MSR divides the RMIDs and renumbers the ones > on the second SNC node to start from zero. > > Reviewed-by: Peter Newman <peternewman@google.com> > Signed-off-by: Tony Luck <tony.luck@intel.com> > ---
(note ordering of commit tags)
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Reinette
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