linux-kernel - Re: [PATCH] arm: Add Arm Erratum 773769 for Large data RAM latency.

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Message-ID: <20140129122651.GB31980@panda>
Date:	Wed, 29 Jan 2014 13:26:51 +0100
From:	Sander <sander@...ilis.net>
To:	Doug Anderson <dianders@...omium.org>
Cc:	Nicolas Pitre <nico@...xnic.net>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Will Deacon <will.deacon@....com>,
	Vivek Gautam <gautam.vivek@...sung.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>,
	"kgene.kim@...sung.com" <kgene.kim@...sung.com>,
	"sboyd@...eaurora.org" <sboyd@...eaurora.org>,
	David Garbett <David.Garbett@....com>,
	Catalin Marinas <Catalin.Marinas@....com>,
	"gregory.clement@...e-electrons.com" 
	<gregory.clement@...e-electrons.com>,
	Olof Johansson <olofj@...omium.org>
Subject: Re: [PATCH] arm: Add Arm Erratum 773769 for Large data RAM latency.

Doug Anderson wrote (ao):
> On Wed, Jan 8, 2014 at 1:08 PM, Nicolas Pitre <nico@...xnic.net> wrote:
> > On Wed, 8 Jan 2014, Doug Anderson wrote:
> >> * If Joe Upstream wants to run an upstream kernel on some type of
> >> exynos5250 product (Samsung ARM Chromebook, HP Chromebook 11, Nexus 10
> >> are the ones I know of) then he will deal with the small number of
> >> crashes or figure out a solution.
> >
> > If Joe Upstream wants to run an upstream kernel, doesn't he have to
> > unscrew his write protect switch first, at which point the RO firmware
> > can be updated as well?
> 
> Actually, no.  You can move your device into dev mode and run any
> kernel you want.  You'll get an annoying "you're in dev mode" screen
> at every bootup, but otherwise it works just fine.
> 
> Going into dev mode requires some special keystrokes at bootup and a
> wipe of your hard disk but no screwdrivers.

And there is http://www.arndaleboard.org/ where you just put an upstream
kernel on sd and boot.

	Sander
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