Re: [PATCH 04/32] s390/sclp: detect the AISI facility

[Claudio Imbrenda]

On Tue,  7 Dec 2021 15:57:15 -0500
Matthew Rosato <mjrosato@xxxxxxxxxxxxx> wrote:

> Detect the Adapter Interruption Suppression Interpretation facility.
> 
> Reviewed-by: Eric Farman <farman@xxxxxxxxxxxxx>
> Signed-off-by: Matthew Rosato <mjrosato@xxxxxxxxxxxxx>

Reviewed-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>

> ---
>  arch/s390/include/asm/sclp.h   | 1 +
>  drivers/s390/char/sclp_early.c | 1 +
>  2 files changed, 2 insertions(+)
> 
> diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h
> index a763563bb3e7..559adb28a24c 100644
> --- a/arch/s390/include/asm/sclp.h
> +++ b/arch/s390/include/asm/sclp.h
> @@ -91,6 +91,7 @@ struct sclp_info {
>  	unsigned char has_zpci_interp : 1;
>  	unsigned char has_aisii : 1;
>  	unsigned char has_aeni : 1;
> +	unsigned char has_aisi : 1;
>  	unsigned int ibc;
>  	unsigned int mtid;
>  	unsigned int mtid_cp;
> diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c
> index 52a203ea23cc..9b29ed850d39 100644
> --- a/drivers/s390/char/sclp_early.c
> +++ b/drivers/s390/char/sclp_early.c
> @@ -47,6 +47,7 @@ static void __init sclp_early_facilities_detect(void)
>  	sclp.has_kss = !!(sccb->fac98 & 0x01);
>  	sclp.has_aisii = !!(sccb->fac118 & 0x40);
>  	sclp.has_aeni = !!(sccb->fac118 & 0x20);
> +	sclp.has_aisi = !!(sccb->fac118 & 0x10);
>  	sclp.has_zpci_interp = !!(sccb->fac118 & 0x01);
>  	if (sccb->fac85 & 0x02)
>  		S390_lowcore.machine_flags |= MACHINE_FLAG_ESOP;