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Commit a0eb55e6 authored by David Hildenbrand's avatar David Hildenbrand Committed by Christian Borntraeger
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s390/sclp: detect PFMF interpretation facility 



Let's detect that facility.

Reviewed-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: default avatarDavid Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
parent 48ee7d3a

arch/s390/include/asm/sclp.h

+1 −0
Original line number Diff line number Diff line
@@ -71,6 +71,7 @@ struct sclp_info { 
	unsigned char has_gsls : 1;

	unsigned char has_ib : 1;

	unsigned char has_cei : 1;

	unsigned char has_pfmfi : 1;

	unsigned int ibc;

	unsigned int mtid;

	unsigned int mtid_cp;

drivers/s390/char/sclp_early.c

+3 −1
Original line number Diff line number Diff line
@@ -46,7 +46,8 @@ struct read_info_sccb { 
	u64	rnmax2;			/* 104-111 */

	u8	_pad_112[116 - 112];	/* 112-115 */

	u8	fac116;			/* 116 */

	u8	_pad_117[119 - 117];	/* 117-118 */

	u8	fac117;			/* 117 */

	u8	_pad_118;		/* 118 */

	u8	fac119;			/* 119 */

	u16	hcpua;			/* 120-121 */

	u8	_pad_122[124 - 122];	/* 122-123 */
@@ -118,6 +119,7 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb) 
	sclp.has_64bscao = !!(sccb->fac116 & 0x80);

	sclp.has_cmma = !!(sccb->fac116 & 0x40);

	sclp.has_esca = !!(sccb->fac116 & 0x08);

	sclp.has_pfmfi = !!(sccb->fac117 & 0x40);

	sclp.has_hvs = !!(sccb->fac119 & 0x80);

	if (sccb->fac85 & 0x02)

		S390_lowcore.machine_flags |= MACHINE_FLAG_ESOP;