Re: [PATCH v2 04/30] s390/sclp: detect the AISI facility

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On 14/01/2022 21.31, Matthew Rosato wrote:
Detect the Adapter Interruption Suppression Interpretation facility.

Reviewed-by: Eric Farman <farman@xxxxxxxxxxxxx>
Reviewed-by: Christian Borntraeger <borntraeger@xxxxxxxxxxxxx>
Reviewed-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
Signed-off-by: Matthew Rosato <mjrosato@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 8c2e142000d4..33b174007848 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_lsi : 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 e9af01b4c97a..c13e55cc4a5d 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_lsi = !!(sccb->fac118 & 0x01);
  	if (sccb->fac85 & 0x02)
  		S390_lowcore.machine_flags |= MACHINE_FLAG_ESOP;

Just a matter of taste, but I'd maybe squash patches 1 - 4 into one patch.

 Thomas




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