linux-kernel - Re: [PATCH v4 18/18] Documentation: ACPI for ARM64

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Message-ID: <20140922230758.GA11987@srcf.ucam.org>
Date:	Tue, 23 Sep 2014 00:07:58 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Al Stone <ahs3@...hat.com>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Pavel Machek <pavel@....cz>,
	Hanjun Guo <hanjun.guo@...aro.org>,
	Mark Rutland <mark.rutland@....com>,
	linaro-acpi@...ts.linaro.org,
	Catalin Marinas <catalin.marinas@....com>,
	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, Jon Masters <jcm@...hat.com>,
	Grant Likely <grant.likely@...aro.org>,
	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,
	Graeme Gregory <graeme.gregory@...aro.org>,
	Randy Dunlap <rdunlap@...radead.org>,
	linux-kernel@...r.kernel.org, Sudeep Holla <Sudeep.Holla@....com>,
	Olof Johansson <olof@...om.net>
Subject: Re: [PATCH v4 18/18] Documentation: ACPI for ARM64

On Mon, Sep 22, 2014 at 04:55:48PM -0600, Al Stone wrote:

> Exactly so.  Or, collaborate with the hardware vendor, or a distro
> or anyone else that is a Promoter or Contributor as defined by UEFI
> [0].  The only thing to keep clear when doing so is who owns the
> intellectual property for any proposed change; this is one of the
> reasons the UEFI Forum has paid membership levels -- to pay for the
> legal assistance to make sure that the specs can be freely used.  As
> someone who is part of the ASWG, I'd personally be glad to help out
> however I can in this regard.

No, it's not about IP ownership, it's about whether those contributing 
the IP have waived patent rights. All contributors to a UEFI spec must 
be members - it's not acceptable for a member to contribute material on 
behalf of a non-member.

> I'm also curious as to what's being referred to as ACPI support
> code for large x86 vendors which is not part of the spec; I *think*
> I know what's being described but a specific example would really
> help me understand better.

Almost everything in drivers/platform/x86, the ACPI support code under 
drivers/gpu, the PCC code for HP servers, some of the USB-ACPI glue 
(defined by a Microsoft spec), some of the ACPI/TPM integration (defined 
by TCG), some hwmon code, probably a few other bits and pieces.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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