linux-kernel - Re: [patch v11 08/23] ARM64 / ACPI: Introduce early

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Date:	Wed, 25 Mar 2015 16:57:50 +0000
From:	Catalin Marinas <catalin.marinas@....com>
To:	Hanjun Guo <hanjun.guo@...aro.org>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Will Deacon <will.deacon@....com>,
	Olof Johansson <olof@...om.net>,
	Grant Likely <grant.likely@...aro.org>,
	Mark Rutland <mark.rutland@....com>,
	Ashwin Chaugule <ashwinc@...eaurora.org>,
	Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>,
	Robert Richter <rric@...nel.org>,
	Arnd Bergmann <arnd@...db.de>,
	Graeme Gregory <graeme.gregory@...aro.org>,
	linaro-acpi@...ts.linaro.org, Marc Zyngier <marc.zyngier@....com>,
	Jon Masters <jcm@...hat.com>,
	Timur Tabi <timur@...eaurora.org>,
	Mark Salter <msalter@...hat.com>, linux-kernel@...r.kernel.org,
	Al Stone <al.stone@...aro.org>,
	Ard Biesheuvel <ard.biesheuvel@...aro.org>,
	linux-acpi@...r.kernel.org, Mark Brown <broonie@...nel.org>,
	Suravee Suthikulpanit <suravee.suthikulpanit@....com>,
	Sudeep Holla <Sudeep.Holla@....com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [patch v11 08/23] ARM64 / ACPI: Introduce early_param "acpi=" to
 enable/disable ACPI

On Tue, Mar 24, 2015 at 10:02:41PM +0800, Hanjun Guo wrote:
> From: Al Stone <al.stone@...aro.org>
> 
> This implements the following policy to decide whether ACPI should
> be used to boot the system:
> - acpi=off: ACPI will not be used to boot the system, even if there is
>   no alternative available (e.g., device tree is empty)
> - acpi=force: only ACPI will be used to boot the system; if that fails,
>   there will be no fallback to alternative methods (such as device tree)
> - otherwise, ACPI will be used as a fallback if the device tree turns out
>   to lack a platform description; the heuristic to decide this is whether
>   /chosen is the only node present at depth 1
> 
> CC: Catalin Marinas <catalin.marinas@....com>
> CC: Will Deacon <will.deacon@....com>
> CC: Rafael J. Wysocki <rjw@...ysocki.net>
> Acked-by: Olof Johansson <olof@...om.net>
> Acked-by: Grant Likely <grant.likely@...aro.org>
> Tested-by: Timur Tabi <timur@...eaurora.org>
> Signed-off-by: Al Stone <al.stone@...aro.org>
> Signed-off-by: Graeme Gregory <graeme.gregory@...aro.org>
> Signed-off-by: Hanjun Guo <hanjun.guo@...aro.org>
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@...aro.org>

Acked-by: Catalin Marinas <catalin.marinas@....com>

But we should also merge Lorenzo's patch which gets read of the forced
param (on top of this series, I really think we should stop rebasing at
this point).

-- 
Catalin

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