On Mon, Jun 27, 2016 at 02:53:16PM +0200, Hans de Goede wrote: > Note this does not mean that all pm_power_off implementations > are going to be happy with machine_power_off leaving irqs > enabled, I would esp. expect the efi and psci implementations > to potentially be unhappy about this. See below for a proposal > to deal with this.
Neither PSCI nor EFI care either way about interrupts. PSCI makes synchronous HVC/SMC calls to a higher exception level, and can be safely called with interrupts enabled or disabled. EFI's ResetSystem (which backs pm_power_off) can be called with interrupts enabled or disabled, so long as there is not a clashing call in progress already (see 7.1 "Runtime Services Rules and Restrictions") in the EFI 2.6 spec. Thanks, Mark.
