Subject: Re: [PATCH 0/8] Fix 8xx MMU/TLB

From: Scott Wood <[email-masked]>
Date: Thu, 15 Oct 2009 17:04:20 -0500

Joakim Tjernlund wrote:
> Now updated with Scott's remarks.
> There is still(probably) a trivial conflict in pte-8xx.h
> 
> Joakim Tjernlund (8):
>   8xx: invalidate non present TLBs
>   8xx: Update TLB asm so it behaves as linux mm expects.
>   8xx: Tag DAR with 0x00f0 to catch buggy instructions.
>   8xx: Fixup DAR from buggy dcbX instructions.
>   8xx: Add missing Guarded setting in DTLB Error.
>   8xx: Restore _PAGE_WRITETHRU
>   8xx: start using dcbX instructions in various copy routines
>   8xx: Remove DIRTY pte handling in DTLB Error.
> 
>  arch/powerpc/include/asm/pte-8xx.h |   14 +-
>  arch/powerpc/kernel/head_8xx.S     |  341 +++++++++++++++++++++++------------
>  arch/powerpc/kernel/misc_32.S      |   18 --
>  arch/powerpc/lib/copy_32.S         |   24 ---
>  arch/powerpc/mm/fault.c            |    8 +-
>  5 files changed, 238 insertions(+), 167 deletions(-)

I still see the lockup with the dcbX patch.  Reverting that (and with 
Rex's patch) things look OK.

-Scott