Re: [PATCH v4 11/18] ARM64 / ACPI: Parse MADT for SMP initialization

Catalin Marinas
2014-09-15T14:56:55Z

On Fri, Sep 12, 2014 at 08:47:00PM +0100, Jon Masters wrote:
> On 09/12/2014 10:00 AM, Hanjun Guo wrote:
> > MADT contains the information for MPIDR which is essential for
> > SMP initialization, parse the GIC cpu interface structures to
> > get the MPIDR value and map it to cpu_logical_map(), and add
> > enabled cpu with valid MPIDR into cpu_possible_map.
> >
> > ACPI 5.1 only has two explicit methods to boot up SMP, PSCI and
> > Parking protocol, but the Parking protocol is only specified for
> > ARMv7 now, so make PSCI as the only way for the SMP boot protocol
> > before some updates for the ACPI spec or the Parking protocol spec.
>
> As an aside, initial support for the Parking Protocol is working on test
> systems within Red Hat at this time.

BTW, have the details of the parking protocol been updated for ARMv8
yet?

--
Catalin