diff options
| author | Janosch Frank | 2016-02-04 10:24:52 +0100 |
|---|---|---|
| committer | Christian Borntraeger | 2016-06-10 12:07:09 +0200 |
| commit | e65f30e0cb29694c4241bd9c96ea9413938fcec5 (patch) | |
| tree | 6025f036493478cf6ae6d1c19edbc7cc08ffb5be /arch/s390/kernel/diag.c | |
| parent | dca4d728773a2f48e999c8617524bbf8dee4807f (diff) | |
s390: hypfs: Move diag implementation and data definitions
Diag 204 data and function definitions currently live in the hypfs
files. As KVM will be a consumer of this data, we need to make it
publicly available and move it to the appropriate diag.{c,h} files.
__attribute__ ((packed)) occurences were replaced with __packed for
all moved structs.
Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Acked-by: Michael Holzheu <holzheu@linux.vnet.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 | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/s390/kernel/diag.c b/arch/s390/kernel/diag.c index 48b37b8357e6..f4ce4a248811 100644 --- a/arch/s390/kernel/diag.c +++ b/arch/s390/kernel/diag.c @@ -162,6 +162,28 @@ int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode) } EXPORT_SYMBOL(diag14); +static inline int __diag204(unsigned long subcode, unsigned long size, void *addr) +{ + register unsigned long _subcode asm("0") = subcode; + register unsigned long _size asm("1") = size; + + asm volatile( + " diag %2,%0,0x204\n" + "0:\n" + EX_TABLE(0b,0b) + : "+d" (_subcode), "+d" (_size) : "d" (addr) : "memory"); + if (_subcode) + return -1; + return _size; +} + +int diag204(unsigned long subcode, unsigned long size, void *addr) +{ + diag_stat_inc(DIAG_STAT_X204); + return __diag204(subcode, size, addr); +} +EXPORT_SYMBOL(diag204); + /* * Diagnose 210: Get information about a virtual device */ |