On Thu, 1 Aug 2019, Aubrey Li wrote:
> On Thu, Aug 1, 2019 at 2:26 PM Daniel Drake <dr...@endlessm.com> wrote:
> > global_clock_event is NULL here. This is a "reduced hardware" ACPI
> > platform so acpi_generic_reduced_hw_init() has set timer_init to NULL,
> > avoiding the usual codepaths that would set up global_clock_event.
> >
> IIRC, acpi_generic_reduced_hw_init() avoids initializing PIT, the status of
> this legacy device is unknown in ACPI hw-reduced mode.
>
> > I tried the obvious:
> > if (!global_clock_event)
> > return -1;
> >
> No, the platform needs a global clock event, can you turn on some other
Wrong. The kernel boots perfectly fine without a global clock event. But
for that the TSC and LAPIC frequency must be known.
Thanks,
tglx
