libpfm_intel_hswep_unc_qpi(3) on Linux
The text 3f31d8c6253d, as Arch Linux 2026-11-01, Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch) shipped it. The page shows this text now.
support for Intel Haswell-EP QPI uncore PMU