Subject: Re: [PATCH 1/2] powerpc/64s: Rename PPC_INVALIDATE_ERAT to PPC_ARCH_300_INVALIDATE_ERAT

From: Segher Boessenkool <[email-masked]>
Date: Sun, 23 Jun 2019 07:03:32 -0500

On Sun, Jun 23, 2019 at 08:41:51PM +1000, Nicholas Piggin wrote:
> This makes it clear to the caller that it can only be used on POWER9
> and later CPUs.

> -#define PPC_INVALIDATE_ERAT	PPC_SLBIA(7)
> +#define PPC_ARCH_300_INVALIDATE_ERAT	PPC_SLBIA(7)

The architecture version is 3.0 (or 3.0B), not "300".  This will work on
implementations of later architecture versions as well, so maybe the name
isn't so great anyway?

Segher