From mboxrd@z Thu Jan  1 00:00:00 1970
From: will.deacon@arm.com (Will Deacon)
Date: Fri, 5 Jul 2013 10:57:57 +0100
Subject: kernel decompressor problem for ARMv7
In-Reply-To: <CAF1ivSakn8-HiAf+4_cLRWUUTDP9QBKpAt+hVQoMyAmKZ2-dJA@mail.gmail.com>
References: <CAF1ivSakn8-HiAf+4_cLRWUUTDP9QBKpAt+hVQoMyAmKZ2-dJA@mail.gmail.com>
Message-ID: <20130705095757.GA13063@mudshark.cambridge.arm.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Fri, Jul 05, 2013 at 09:44:12AM +0100, Lin Ming wrote:
> Hi all,

Hello,

> I'm porting BSP code from v2.6.36 to v3.10 kernel. It's ARMv7 processor.

Which specific processor/SoC?

> But decompressor doesn't work. With a lot of debug, I finally find
> below 2 commits related.
> Kernel uncompress OK with these commits reverted.
> 
> dbece45: ARM: 7501/1: decompressor: reset ttbcr for VMSA ARMv7 cores
> (Introduced in v3.6-rc6)
> 
> 5010192: ARM: 7583/1: decompressor: Enable unaligned memory access for
> v6 and above
> (Introduced in v3.7-rc8)
> 
> Any hint to fix it?

There's not really enough information to go on here. What specifically
fails? Also, do you have to revert *both* of the above changes to get things
working again?

Cheers,

Will