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| author | Janosch Frank <frankja@linux.vnet.ibm.com> | 2016-02-12 14:52:49 +0300 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2016-06-10 13:07:10 +0300 |
| commit | 022bd2d11cc51f62e873a09bcae8016b10950194 (patch) | |
| tree | 56866562047d33114d658b1ca73cf3733224559c /arch/s390/kernel/diag.c | |
| parent | e435dc31398e63b992639cf62024d959219db191 (diff) | |
| download | linux-022bd2d11cc51f62e873a09bcae8016b10950194.tar.xz | |
s390: Make diag224 public
Diag204's cpu structures only contain the cpu type by means of an
index in the diag224 name table. Hence, to be able to use diag204 in
any meaningful way, we also need a usable diag224 interface.
Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/diag.c')
| -rw-r--r-- | arch/s390/kernel/diag.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/s390/kernel/diag.c b/arch/s390/kernel/diag.c index f4ce4a248811..a44faf4a0454 100644 --- a/arch/s390/kernel/diag.c +++ b/arch/s390/kernel/diag.c @@ -218,3 +218,18 @@ int diag210(struct diag210 *addr) return ccode; } EXPORT_SYMBOL(diag210); + +int diag224(void *ptr) +{ + int rc = -EOPNOTSUPP; + + diag_stat_inc(DIAG_STAT_X224); + asm volatile( + " diag %1,%2,0x224\n" + "0: lhi %0,0x0\n" + "1:\n" + EX_TABLE(0b,1b) + : "+d" (rc) :"d" (0), "d" (ptr) : "memory"); + return rc; +} +EXPORT_SYMBOL(diag224); |