Time to get rid of CPU6 ERRATA on powerpc/8xx ?

Michael Ellerman mpe at ellerman.id.au
Mon Jan 8 14:38:23 AEDT 2018


christophe leroy <christophe.leroy at 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


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