leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

s390/cpacf: query instructions use unique parameters for compatibility with KMA

Browse Source 
The new KMA instruction requires unique parameters. Update __cpacf_query to
generate a compatible assembler instruction.

Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Acked-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Jason J. Herne 2017-02-21 09:00:54 -05:00 committed by Christian Borntraeger
parent 97da3854c5
commit b112a2df28
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/s390/include/asm/cpacf.h
View File

@ -149,8 +149,8 @@ static inline void __cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
asm volatile(
" spm 0\n" /* pckmo doesn't change the cc */
/* Parameter registers are ignored, but may not be 0 */
"0: .insn rrf,%[opc] << 16,2,2,2,0\n"
/* Parameter regs are ignored, but must be nonzero and unique */
"0: .insn rrf,%[opc] << 16,2,4,6,0\n"
" brc 1,0b\n" /* handle partial completion */
: "=m" (*mask)
: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (opcode)