[PATCH v2] powerpc/mm/radix: Invalidate ERAT on tlbiel for POWER9 DD1

[Michael Ellerman]

Michael Neuling <mikey at neuling.org> writes:
> diff --git a/arch/powerpc/mm/tlb-radix.c b/arch/powerpc/mm/tlb-radix.c
> index bda8c43be7..4a19cdd8a0 100644
> --- a/arch/powerpc/mm/tlb-radix.c
> +++ b/arch/powerpc/mm/tlb-radix.c
> @@ -50,6 +50,9 @@ static inline void _tlbiel_pid(unsigned long pid, unsigned long ric)
>  	for (set = 0; set < POWER9_TLB_SETS_RADIX ; set++) {
>  		__tlbiel_pid(pid, set, ric);
>  	}
> +	if (cpu_has_feature(CPU_FTR_POWER9_DD1))
> +		asm volatile(PPC_SLBIA(0x7)
> +			     : : :"memory");

Ah of course I'll use slbia to invalidate the ERAT.

How about we do:

#define PPC_INVALIDATE_ERAT	PPC_SLBIA(0x7)


Or bike-shed me a name for it.

cheers