How to enable L3 CAT on i7-1185GRE and i7-1370PE

[CH_Woo]

I am trying to enable CAT on several CPUs.

The CPUs I have are the i7-1185GRE and i7-1370PE, and according to the following RDT document, specifically referencing the B.1.4.1 Processor Support List, these CPUs are supported:
https://www.intel.com/content/www/us/en/content-details/789566/intel-resource-director-technology-intel-rdt-architecture-specification.html

I configured the kernel with CONFIG_X86_CPU_RESCTRL=y using Yocto and successfully booted Linux by building the core-image-minimal. However, I was unable to set L3 CAT on the i7-1185GRE.

Additionally, the i7-1370PE appears as if RDT is not enabled because I cannot mount it with resctrl.

What additional settings do I need to use L3 CAT? Is it possible that the CPUs I have do not support L3 CAT? Please let me know.

[CarlosAM_INTEL]

Hello, @CH_Woo:

Thank you for contacting Intel Embedded Community.

The information that may help you with the Intel® Core™ i7-1185GRE Processor can be found on pages 40 and 41 of the following website:

https://cdrdv2.intel.com/v1/dl/getContent/575683

You should fill out the form stated on the following website when you have problems with the provided website:

https://www.intel.com/content/www/us/en/forms/support/my-intel-sign-on-support.html

Best regards,

@CarlosAM_INTEL.