linux-kernel - Re: [PATCH v3 00/17] Introduce ACPI for ARM64 based on ACPI 5.1

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Date:	Thu, 11 Sep 2014 17:14:05 +0100
From:	Sudeep Holla <sudeep.holla@....com>
To:	Graeme Gregory <gg@...mlogic.co.uk>
CC:	Sudeep Holla <sudeep.holla@....com>,
	Catalin Marinas <Catalin.Marinas@....com>,
	"grant.likely@...aro.org" <grant.likely@...aro.org>,
	Mark Rutland <Mark.Rutland@....com>,
	"linaro-acpi@...ts.linaro.org" <linaro-acpi@...ts.linaro.org>,
	Will Deacon <Will.Deacon@....com>,
	Lv Zheng <lv.zheng@...el.com>, Rob Herring <robh@...nel.org>,
	Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Robert Moore <robert.moore@...el.com>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	Charles Garcia-Tobin <Charles.Garcia-Tobin@....com>,
	Robert Richter <rric@...nel.org>,
	Jason Cooper <jason@...edaemon.net>,
	Arnd Bergmann <arnd@...db.de>,
	Marc Zyngier <Marc.Zyngier@....com>,
	Liviu Dudau <Liviu.Dudau@....com>,
	Mark Brown <broonie@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"graeme.gregory@...aro.org" <graeme.gregory@...aro.org>,
	Randy Dunlap <rdunlap@...radead.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"hanjun.guo@...aro.org" <hanjun.guo@...aro.org>,
	Olof Johansson <olof@...om.net>
Subject: Re: [PATCH v3 00/17] Introduce ACPI for ARM64 based on ACPI 5.1



On 11/09/14 17:06, Graeme Gregory wrote:
> On Thu, Sep 11, 2014 at 04:57:24PM +0100, Sudeep Holla wrote:
>>
>>

[...]
>> This what we have suggested in past especially for this S-state support.
>> Currently the core acpi code compiles in sleep support unconditionally.
>> That doesn't mean we need to do the same on ARM64, we can easily make
>> sure that's not enabled for ARM64 until we have clarification on how to
>> support them on ARM in ACPI specification.
>>
>> I just pointed out at one "out of spec" workaround done for x86
>> "unconditionally" in the code just to tell that it won't work on ARM.
>> That shouldn't be misunderstood as demand for refactoring as we have no
>> clue how S-state would look on ARM to take up any such task.
>>
> For the sleep.c case I worked on this and sent some updates to Hanjun so
> it should be compiled out in the next version of the patches.
>

Thanks Graeme, that's much better than any hooks/stubs which might fail
depending on ACPI table contents.

Regards,
Sudeep


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