CVE-2020-11669: Undefined Security Weakness

An issue was discovered in the Linux kernel before 5.2 on the powerpc platform. arch/powerpc/kernel/idlebook3s.S does not have save/restore functionality for PNVPOWERSAVEAMR, PNVPOWERSAVEUAMOR, and PNVPOWERSAVEAMOR, aka CID-53a712bae5dd...