The current x86 and amd64 stable hardened-sources-3.2.11 ebuild contains: local GRADM_COMPAT="sys-apps/gradm-2.9" But there are no stable sys-apps/gradm-2.9* in tree. The only gradm-2.9* in tree, gradm-2.9.201202232055, is ~x86 and ~amd64.
Marked stable on the x86 and amd64, the same arches for which those kernels are stable.