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 for <linuxppc-dev@lists.ozlabs.org>; Mon,  8 Jan 2018 14:38:24 +1100 (AEDT)
From: Michael Ellerman <mpe@ellerman.id.au>
To: christophe leroy <christophe.leroy@c-s.fr>,
 linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
 Paul Mackerras <paulus@samba.org>, Scott Wood <scottwood@freescale.com>,
 Joakim Tjernlund <joakim.tjernlund@transmode.se>,
 Segher Boessenkool <segher@kernel.crashing.org>
Subject: Re: Time to get rid of CPU6 ERRATA on powerpc/8xx ?
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Date: Mon, 08 Jan 2018 14:38:23 +1100
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christophe leroy <christophe.leroy@c-s.fr> writes:

> Today, Linux kernel includes a workaround for CPU6 ERRATA on the 8xx 
> powerpc.
>
> This ERRATA exists on the 801, the 823, the 855/860 before revision C.0
> It doesn't concern any modern versions of the 8xx, neither the 860 past 
> and including rev C.0, nor the 866 nor the 885
>
> This workaround complicates the TLBmiss and TLBerror handlers and make 
> the code more and more unreadable.
>
> Since this workaround addresses very old versions of the 8xx, I'd like 
> to get rid of it. Do you see any good reason to keep it today ? If not I 
> will come with a cleanup patch in the coming weeks.

I'm happy for you to remove it, and if someone notices and complains
loudly we can always put it back.

cheers