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

[Benjamin Herrenschmidt]

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

> @@ -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");
>  }