Re: [PATCH 1/3] fixed mtc0_tlbw_hazard

[Ralf Baechle <ralf@linux-mips.org>]

On Thu, Sep 21, 2006 at 09:01:14PM +0400, Sergei Shtylyov wrote:

>    I fail to see what was changed WRT SB1 CPUs by the suspected patch. 
>    Though wait... the previous version was inconsistent, using the different 
> barrier definitions for C and assembly (nops in the former, and branch in 
> the latter). But since the assembly version was not really used, it 
> couldn't break anything... :-/
> 
>    Anyway, shouldn't ssnop's be used for SB1 instead? CPU has quad-issue 
> pipeline, hasn't it?

SB1 is almost fully interlocked so the right thing to do is doing nothing.

  Ralf