linux-kernel - Re: [PATCH v8 01/11] ARM: brcmstb: add infrastructure for ARM-based Broadcom STB SoCs

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Message-ID: <20140802082141.GX30282@n2100.arm.linux.org.uk>
Date:	Sat, 2 Aug 2014 09:21:41 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Rob Herring <robherring2@...il.com>
Cc:	Brian Norris <computersforpeace@...il.com>,
	Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Florian Fainelli <f.fainelli@...il.com>,
	Christian Daudt <bcm@...thebug.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Matt Porter <mporter@...aro.org>,
	Marc Carino <marc.ceeeee@...il.com>,
	Gregory Fong <gregory.0xf0@...il.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v8 01/11] ARM: brcmstb: add infrastructure for
	ARM-based Broadcom STB SoCs

On Fri, Aug 01, 2014 at 09:33:44AM -0500, Rob Herring wrote:
> On Wed, Jul 30, 2014 at 9:23 PM, Brian Norris
> <computersforpeace@...il.com> wrote:
> > Like what?
> 
> Errata work-arounds, performance bits, etc. I don't recall exactly
> which ones are per core vs. global. I assume this is an A9, but cores
> with virt extensions would also need to drop to non-secure mode.

The kernel's bringup just before enabling the CPU deals with that stuff
provided your CPU is running in secure mode, but you are right - we /do/
want to encourage platforms to do the errata fixups before they call the
kernel via any entry point.

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