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s390/sclp: detect cmma 

Let's detect the Collaborative-memory-management-interpretation facility,
aka CMM assist, so we can correctly enable cmma later.

Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
David Hildenbrand 2015-11-24 12:55:35 +01:00 committed by Christian Borntraeger
parent 89b5b4de33
commit 09be9cb92b
2 changed files with 2 additions and 0 deletions
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1
arch/s390/include/asm/sclp.h
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@ -62,6 +62,7 @@ struct sclp_info {
unsigned char has_sief2 : 1;
unsigned char has_64bscao : 1;
unsigned char has_gpere : 1;
unsigned char has_cmma : 1;
unsigned int ibc;
unsigned int mtid;
unsigned int mtid_cp;

1
drivers/s390/char/sclp_early.c
View File

@ -115,6 +115,7 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
sclp.has_sprp = !!(sccb->fac84 & 0x02);
sclp.has_core_type = !!(sccb->fac84 & 0x01);
sclp.has_64bscao = !!(sccb->fac116 & 0x80);
sclp.has_cmma = !!(sccb->fac116 & 0x40);
sclp.has_esca = !!(sccb->fac116 & 0x08);
sclp.has_hvs = !!(sccb->fac119 & 0x80);
if (sccb->fac85 & 0x02)