Re: [PATCH] ARM: Runtime patch udiv/sdiv instructions into __aeabi_{u}idiv()

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On Fri, 11 Dec 2015, Arnd Bergmann wrote:

> On Friday 11 December 2015 22:34:16 Russell King - ARM Linux wrote:
> > 
> >  __v7_pj4b_proc_info:
> > -       .long   0x562f5840
> > -       .long   0xfffffff0
> > +       .long   0x560f5800
> > +       .long   0xff0fff00
> > 
> > So it was to include Armada 370.  So this now brings up the question...
> > what is the MIDR value used in Armada 370?
> 
> I've listed them in an earlier thread, here is the list again:
> 
>                 variant part    revision        name            features
> mmp2:           0       0x581   5               PJ4             idivt
> dove:           0       0x581   5               PJ4             idivt
> Armada 370      1       0x581   1               PJ4B            idivt
> mmp3:           2       0x584   2               PJ4-MP          idiva idivt lpae
> Armada XP       2       0x584   2               PJ4-MP          idiva idivt lpae
> Berlin          2       0x584   2               PJ4-MP          idiva idivt lpae
> 
> So the original table was wrong because it failed to include PJ4B (Armada 370),
> but the current version is wrong, because it also includes PJ4 (Dove and MMP2).

I'd suggest you add the above table and conclusion to the commit log for 
your proposed fix.  Next time the question comes up the info will be 
right there.


Nicolas
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