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s390: hypfs: Move diag implementation and data definitions

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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>
This commit is contained in:
Janosch Frank
2016-02-04 10:24:52 +01:00
committed by Christian Borntraeger
parent dca4d72877
commit e65f30e0cb
3 changed files with 256 additions and 254 deletions
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22
arch/s390/kernel/diag.c
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@@ -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
*/