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s390/sclp: Add hmfai field 

Let's add hypervisor-managed facility-apportionment indications field to
SCLP structs. KVM will use it to reduce maintenance cost of
Non-Hypervisor-Managed facility bits.

Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Eric Farman <farman@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Alexander Yarygin 2016-04-01 15:36:51 +03:00 committed by Christian Borntraeger
parent ed8dda0bf7
commit 154fa27e6b
2 changed files with 6 additions and 1 deletions
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1
arch/s390/include/asm/sclp.h
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@ -69,6 +69,7 @@ struct sclp_info {
unsigned int max_cores; unsigned int max_cores;
unsigned long hsa_size; unsigned long hsa_size;
unsigned long facilities; unsigned long facilities;
unsigned int hmfai;
}; };
extern struct sclp_info sclp; extern struct sclp_info sclp;

6
drivers/s390/char/sclp_early.c
View File

@ -49,7 +49,9 @@ struct read_info_sccb {
u8 _pad_117[119 - 117]; /* 117-118 */ u8 _pad_117[119 - 117]; /* 117-118 */
u8 fac119; /* 119 */ u8 fac119; /* 119 */
u16 hcpua; /* 120-121 */ u16 hcpua; /* 120-121 */
u8 _pad_122[4096 - 122]; /* 122-4095 */ u8 _pad_122[124 - 122]; /* 122-123 */
u32 hmfai; /* 124-127 */
u8 _pad_128[4096 - 128]; /* 128-4095 */
} __packed __aligned(PAGE_SIZE); } __packed __aligned(PAGE_SIZE);
static char sccb_early[PAGE_SIZE] __aligned(PAGE_SIZE) __initdata; static char sccb_early[PAGE_SIZE] __aligned(PAGE_SIZE) __initdata;
@ -155,6 +157,8 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
sclp.mtid = (sccb->fac42 & 0x80) ? (sccb->fac42 & 31) : 0; sclp.mtid = (sccb->fac42 & 0x80) ? (sccb->fac42 & 31) : 0;
sclp.mtid_cp = (sccb->fac42 & 0x80) ? (sccb->fac43 & 31) : 0; sclp.mtid_cp = (sccb->fac42 & 0x80) ? (sccb->fac43 & 31) : 0;
sclp.mtid_prev = (sccb->fac42 & 0x80) ? (sccb->fac66 & 31) : 0; sclp.mtid_prev = (sccb->fac42 & 0x80) ? (sccb->fac66 & 31) : 0;
sclp.hmfai = sccb->hmfai;
} }
/* /*