GSD-2022-1005574 powerpc/perf: Optimize clearing the pending PMI and remove WARN_ON for PMI check in power_pmu_disable

powerpc/perf: Optimize clearing the pending PMI and remove WARNON for PMI check in powerpmudisable This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel versi...