linux-kernel - Re: [PATCH 8/9] [HACK] ARM: imx: work around v7_cpu

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Date:	Thu, 14 Feb 2013 16:45:05 -0700
From:	Stephen Warren <swarren@...dotorg.org>
To:	Arnd Bergmann <arnd@...db.de>
CC:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	arm@...nel.org, Shawn Guo <shawn.guo@...aro.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Dinh Nguyen <dinguyen@...era.com>,
	Pavel Machek <pavel@...x.de>,
	Stephen Warren <swarren@...dia.com>,
	Simon Horman <horms+renesas@...ge.net.au>
Subject: Re: [PATCH 8/9] [HACK] ARM: imx: work around v7_cpu_resume link error

On 02/14/2013 03:47 PM, Arnd Bergmann wrote:
> Patch c08e20d24 "arm: Add v7_invalidate_l1 to cache-v7.S"
> moves the v7_invalidate_l1 symbol out of imx/headsmp.S,
> which seems to cause a link error because it is now
> too far away from v7_cpu_resume when building an
> allyesconfig kernel.

Is the problem from the following in arch/arm/mach-imx/headsmp.S:

ENTRY(v7_cpu_resume)
        bl      v7_invalidate_l1

Isn't the range of bl +/- 32MiB (or +/- 16MibB in Thumb 2). Is the
kernel really that big? Sorry, I'm having trouble understanding what
causes the problem.
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