linux-kernel - Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

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Message-ID: <20150415133403.GB26099@e104818-lin.cambridge.arm.com>
Date:	Wed, 15 Apr 2015 14:34:03 +0100
From:	Catalin Marinas <catalin.marinas@....com>
To:	Rob Clark <robdclark@...il.com>
Cc:	Mark Rutland <mark.rutland@....com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
	"abhimany@...eaurora.org" <abhimany@...eaurora.org>,
	Will Deacon <Will.Deacon@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"arm@...nel.org" <arm@...nel.org>,
	Kumar Gala <galak@...eaurora.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

On Tue, Apr 14, 2015 at 05:48:48PM -0400, Rob Clark wrote:
> Just speaking as an outsider to this topic, but seems like most/all
> tablets/phones/etc ship with signed firmware.  Which means for most of
> the population, upgrading the firmware to a new version which did
> support the standard (assuming it existed), isn't really an option on
> our devices, any more than fixing buggy acpi tables is on our
> laptops..

I wouldn't expect most population to build their own kernels on
tablets/phones. And even if you could install a custom kernel, mainline
rarely runs on such devices because of tons of out of tree patches (just
look at the Nexus 9 patches that Kumar pointed at; even ignoring the
booting protocol they are extremely far from an upstreamable form).

-- 
Catalin
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