> This series is posted as RFC to get some feedback before I incorporate
> it into the next version of my patches to fix Kconfig issues. It was
> prompted by Reinette's comment:

Sashiko review is done[1]. The only complaint is that I didn't address the pre-existing
issue that a malicious/broken hypervisor might provide invalid return values from
some CPUID invocations which could lead to divide-by-zero faults.

I don't intend to address this. Virtualization of RDT would require a great deal more
support from the hypervisor that just getting this CPUID enumeration right.

-Tony

[1] https://sashiko.dev/#/patchset/20260819161323.11587-1-tony.luck%40intel.com