linux-kernel - Re: [Linaro-acpi] [PATCH v2 06/18] ARM64 / ACPI: Parse MADT to map logical cpu to MPIDR and get cpu_possible/present

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Date:	Wed, 20 Aug 2014 11:24:40 +0800
From:	Hanjun Guo <hanjun.guo@...aro.org>
To:	Zi Shen Lim <zlim.lnx@...il.com>
CC:	Sudeep Holla <sudeep.holla@....com>,
	Catalin Marinas <Catalin.Marinas@....com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Mark Rutland <Mark.Rutland@....com>,
	"linaro-acpi@...ts.linaro.org" <linaro-acpi@...ts.linaro.org>,
	Liviu Dudau <Liviu.Dudau@....com>,
	Lv Zheng <lv.zheng@...el.com>, Rob Herring <robh@...nel.org>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Robert Moore <robert.moore@...el.com>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	Robert Richter <rric@...nel.org>,
	Jason Cooper <jason@...edaemon.net>,
	Arnd Bergmann <arnd@...db.de>,
	Marc Zyngier <Marc.Zyngier@....com>,
	Will Deacon <Will.Deacon@....com>,
	Mark Brown <broonie@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Randy Dunlap <rdunlap@...radead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Olof Johansson <olof@...om.net>
Subject: Re: [Linaro-acpi] [PATCH v2 06/18] ARM64 / ACPI: Parse MADT to map
 logical cpu to MPIDR and get cpu_possible/present_map

On 2014-8-20 0:46, Zi Shen Lim wrote:
> Hanjun,

Hi Lim,

> 
> On Tue, Aug 19, 2014 at 6:00 AM, Hanjun Guo <hanjun.guo@...aro.org> wrote:
>> Will INTERRUPT_CONTROLLER confuse people? There is only one GIC redistributor
>> (some people regard it as interrupt controller) in ARM system, if we use
>> INTERRUPT_CONTROLLER people will regard it as multi-redistributors in the
>> system, I think GIC_CPU_INTERFACE would be better, what do you think?
> 
> I think you meant to say "one GIC _distributor_" (GICD) instead of
> redistributor (GICR).
> ACPI5.1 only describes one GICD per system, but we can most certainly
> describe multiple GICRs.
> For multi-cpu systems, you'll definitely see multiple GIC redistributors.

Yes, you are right, thanks for pointing it out, I think I need more coffee :)

Thanks
Hanjun

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