[Skiboot] [PATCH] vas: Disable VAS/NX-842 on some P9 revisions

[Michael Ellerman]

Sukadev Bhattiprolu <sukadev at linux.vnet.ibm.com> writes:

> diff --git a/hw/vas.c b/hw/vas.c
> index fb5a1e7..6362f7e 100644
> --- a/hw/vas.c
> +++ b/hw/vas.c
> @@ -69,6 +69,36 @@ static int vas_scom_write(struct proc_chip *chip, uint64_t reg, uint64_t val)
>  	return rc;
>  }
>  
> +/*
> + * VAS and hence, NX-842 are disabled in following POWER9 revisions:

It's actually paste that is disabled, and we disable VAS/NX so that
nothing will use paste.

> + *
> + *	- Nimbus DD1.X, DD2.01, DD2.1
> + *	- Cumulus DD1.0
> + *
> + * Return true for those revisions. Return false for others.
> + */

cheers