linux-kernel - Re: [PATCH 3/3] ARM: errata 430973: move !ARCH

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Date:	Mon, 27 Jul 2015 19:36:26 +0200
From:	Sebastian Reichel <sre@...nel.org>
To:	Ben Dooks <ben.dooks@...ethink.co.uk>
Cc:	Russell King - ARM Linux <linux@....linux.org.uk>,
	Tony Lindgren <tony@...mide.com>, linux-omap@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 3/3] ARM: errata 430973: move !ARCH_MULTIPLATFORM to
 Kconfig

Hi Ben,

On Mon, Jul 27, 2015 at 10:59:56AM +0100, Ben Dooks wrote:
> > I think you missed the part adding the !ARCH_MULTIPLATFORM 
> > dependency in Kconfig for ARM_ERRATA_430973. I only removed the 
> > check in the sourcecode, since it is no longer required with the 
> > dependency being in Kconfig.
> > 
> > So I guess there are 3 options now:
> > 
> > 1. Add !ARCH_MULTIPLATFORM dependency to Kconfig, keep extra check 
> > in the sourcecode 2. Add !ARCH_MULTIPLATFORM dependency to Kconfig,
> > remove extra check in the sourcecode 3. Remove !ARCH_MULTIPLATFORM
> > dependency alltogether
> > 
> > I will send an appropriate patch, if you tell me your preferred 
> > option.
> 
> This isn't the only place ARM_ERRATA_430973 is used, [...]

The dependency on ARM_ERRATA_430973 has been removed from
arch/arm/mm/proc-v7-2level.S in 4.1 (commit id e748994), so
that it always flushes. The only additional places are in the
Nokia N900 boardcode and the N900 pdata-quirk, which are
removed in PATCH 1/3.

So actually it is the only place.

-- Sebastian

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