kernel decompressor problem for ARMv7

Will Deacon will.deacon at
Fri Jul 5 05:57:57 EDT 2013

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


> 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?



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