Linux kernel bug fix: Revert "powerpc/64s/idle: POWER9 ESL=0 stop avoid save/restore overhead"
Subsystem: arch/powerpc (arch/powerpc/kernel/idle_book3s.S)
Bug type: unknown, severity: high
Files changed: arch/powerpc/kernel/idle_book3s.S
Introduced by Nicholas Piggin on 2018-04-04 11:11:43 +1000; fixed by Michael Ellerman on 2018-04-05 16:06:25 +1000 (lifetime: 1 days)