Re: [PATCH]xen/acpi: make poweroff really work for pv-ops dom0

[Jeremy Fitzhardinge <jeremy@goop.org>]

On 11/23/09 17:33, Wei, Gang wrote:
> xen/acpi: Make poweroff really work for pv-ops dom0
>
> sched_op(SHUTDOWN_poweroff) hypercall will only halt all physical cpus without
> really poweroff the system. Use pm_power_off fn to achieve it.
>   

It seems unfortunate that Xen can't actually implement SHUTDOWN_poweroff
in a manner that the name suggests ;)  But it can't because it may need
to interpret _SST to do it...

Thanks,
    J

> Signed-off-by: Wei Gang <gang.wei@intel.com>
>
> diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
> index ecb9b0d..d9fd3f4 100644
> --- a/arch/x86/xen/enlighten.c
> +++ b/arch/x86/xen/enlighten.c
> @@ -1058,6 +1058,14 @@ static void xen_machine_halt(void)
>  	xen_reboot(SHUTDOWN_poweroff);
>  }
>  
> +static void xen_machine_power_off(void)
> +{
> +	if (pm_power_off) 
> +		pm_power_off();
> +	else
> +		xen_reboot(SHUTDOWN_poweroff);
> +}
> +
>  static void xen_crash_shutdown(struct pt_regs *regs)
>  {
>  	xen_reboot(SHUTDOWN_crash);
> @@ -1066,7 +1074,7 @@ static void xen_crash_shutdown(struct pt_regs *regs)
>  static const struct machine_ops __initdata xen_machine_ops = {
>  	.restart = xen_restart,
>  	.halt = xen_machine_halt,
> -	.power_off = xen_machine_halt,
> +	.power_off = xen_machine_power_off,
>  	.shutdown = xen_machine_halt,
>  	.crash_shutdown = xen_crash_shutdown,
>  	.emergency_restart = xen_emergency_restart,