Hi Tony, On 5/5/25 10:27 AM, Luck, Tony wrote: >>> " Non-CPU agent RDT uses the RMID and CLOS tags in the same way that they are used for CPU agents." >> >> As I understand AMD uses a single specific (the highest CLOSid supported by L3) >> CLOS that is then reserved for IO allocation. While both Intel and AMD technically >> "uses CLOSid", it is done differently, no? >> >> Specifically, is this documentation introduced in patch #5 accurate for Intel? >> + The feature routes the I/O traffic via specific CLOSID reserved >> + for io_alloc feature. By configuring the CBM (Capacity Bit Mask) >> + for the CLOSID, users can control the L3 portions available for >> + I/0 traffic. The reserved CLOSID will be excluded for group creation. > > No. Intel doesn't reserve a single CLOS. It allows to assign RMIDs and CLOSids > for I/O monitoring and control. Different IDs can be assigned to different groups > of devices (the "grouping" is dependent on h/w routing to devices, not > assignable by the OS). How does this work with CDP on Intel? Can CDP be enabled for CPU agents while the "code" and "data" CLOSids be used for I/O control? Reinette
