diff options
| author |   Alexander Yarygin <yarygin@linux.vnet.ibm.com> | 2016-04-01 15:36:51 +0300 |
|---|---|---|
| committer |   Christian Borntraeger <borntraeger@de.ibm.com> | 2016-05-09 13:33:59 +0200 |
| commit | 154fa27e6ba37931ca585598acf17c4dcd44c81a (patch) | |
| tree | 894fdca609b44f75a55267b44ddb9dcd8beec35f /drivers/s390/char | |
| parent | KVM: s390: Enable all facility bits that are known good for passthrough (diff) | |
| download | linux-dev-154fa27e6ba37931ca585598acf17c4dcd44c81a.tar.xz linux-dev-154fa27e6ba37931ca585598acf17c4dcd44c81a.zip | |
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>
Diffstat (limited to 'drivers/s390/char')
| -rw-r--r-- | drivers/s390/char/sclp_early.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c index 6804354c42bd..0ac520dd1b21 100644 --- a/drivers/s390/char/sclp_early.c +++ b/drivers/s390/char/sclp_early.c @@ -49,7 +49,9 @@ struct read_info_sccb { u8 _pad_117[119 - 117]; /* 117-118 */ u8 fac119; /* 119 */ 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); 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_cp = (sccb->fac42 & 0x80) ? (sccb->fac43 & 31) : 0; sclp.mtid_prev = (sccb->fac42 & 0x80) ? (sccb->fac66 & 31) : 0; + + sclp.hmfai = sccb->hmfai; } /* |