Messages in this thread | | | From | Peter Newman <> | Date | Mon, 31 Oct 2022 15:42:50 +0100 | Subject | Re: [PATCH 01/18] x86/resctrl: Track the closid with the rmid |
| |
Hi James,
On Fri, Oct 21, 2022 at 3:12 PM James Morse <james.morse@arm.com> 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 rescrl 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.
I recall that the allocation of RMIDs on MPAM was an open topic of discussion on the other thread. Can we finish that discussion first?
https://lore.kernel.org/lkml/14df28f0-90b1-9c43-add5-08947165596d@intel.com/
Thanks! -Peter
| |