Messages in this thread | | | Date | Fri, 15 Dec 2023 20:58:03 -0800 | Subject | Re: [PATCH v8 05/24] x86/resctrl: Track the closid with the rmid | From | Reinette Chatre <> |
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Hi James,
On 12/15/2023 9:43 AM, James Morse wrote: > x86's RMID are independent of the CLOSID. An RMID can be allocated, > used and freed without considering the CLOSID. > > MPAM's equivalent feature is PMG, which is not an independent number, > it extends the CLOSID/PARTID space. For MPAM, only PMG-bits worth of > 'RMID' can be allocated for a single CLOSID. > i.e. if there is 1 bit of PMG space, then each CLOSID can have two > monitor groups. > > To allow resctrl to disambiguate RMID values for different CLOSID, > everything in resctrl that keeps an RMID value needs to know the CLOSID > too. This will always be ignored on x86. > > Signed-off-by: James Morse <james.morse@arm.com> > Tested-by: Shaopeng Tan <tan.shaopeng@fujitsu.com> > Tested-by: Peter Newman <peternewman@google.com> > Tested-by: Babu Moger <babu.moger@amd.com> > Reviewed-by: Shaopeng Tan <tan.shaopeng@fujitsu.com> > Reviewed-by: Xin Hao <xhao@linux.alibaba.com> > ---
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Reinette
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