From mboxrd@z Thu Jan  1 00:00:00 1970
From: Catalin Marinas <catalin.marinas@arm.com>
Subject: Re: [PATCH v4 11/18] ARM64 / ACPI: Parse MADT for SMP initialization
Date: Mon, 15 Sep 2014 15:56:31 +0100
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To: Jon Masters <jcm@redhat.com>
Cc: "hanjun.guo@linaro.org" <hanjun.guo@linaro.org>, "Rafael J. Wysocki" <rjw@rjwysocki.net>, Mark Rutland <Mark.Rutland@arm.com>, Olof Johansson <olof@lixom.net>, "grant.likely@linaro.org" <grant.likely@linaro.org>, Will Deacon <Will.Deacon@arm.com>, "graeme.gregory@linaro.org" <graeme.gregory@linaro.org>, Arnd Bergmann <arnd@arndb.de>, Sudeep Holla <Sudeep.Holla@arm.com>, Jason Cooper <jason@lakedaemon.net>, Marc Zyngier <Marc.Zyngier@arm.com>, Bjorn Helgaas <bhelgaas@google.com>, Daniel Lezcano <daniel.lezcano@linaro.org>, Mark Brown <broonie@kernel.org>, Rob Herring <robh@kernel.org>, Robert Richter <rric@kernel.org>, Lv Zheng <lv.zheng@intel.com>, Robert Moore <robert.moore@intel.com>, Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>, Liviu Dudau <Liviu.Dudau@arm.com>, Randy Dunlap <rdunlap@infradead.org>, Charles Garcia-Tobin <Charles.Garcia-Tobin@arm.com>, linux

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