[PATCH] powerpc/mm/radix: Invalidate ERAT on tlbiel for POWER9 DD1

[Michael Neuling]

On Wed, 2016-11-16 at 15:35 +1100, Benjamin Herrenschmidt wrote:
> On Wed, 2016-11-16 at 15:18 +1100, Michael Neuling wrote:
> > +               asm volatile("isync \n"
> > +                            PPC_SLBIA(0x7)
> > +                            : : :"memory");
> >         return;
> >  }
> > 
> 
> We probably don't need the isync's

Yep, testing confirms that too. I'll resend.

Thanks,
Mikey

> 
> > @@ -83,6 +87,10 @@ static inline void _tlbiel_va(unsigned long va,
> > unsigned long pid,
> >         asm volatile(PPC_TLBIEL(%0, %4, %3, %2, %1)
> >                      : : "r"(rb), "i"(r), "i"(prs), "i"(ric), "r"(rs)
> > : "memory");
> >         asm volatile("ptesync": : :"memory");
> > +       if (cpu_has_feature(CPU_FTR_POWER9_DD1))
> > +               asm volatile("isync \n"
> > +                            PPC_SLBIA(0x7)
> > +                            : : :"memory");
> >  }
> 
>