AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

s390: mark __cpacf_check_opcode() and cpacf_query_func() as __always_inline

Browse Source 
Commit e60fb8bf68 ("s390/cpacf: mark scpacf_query() as __always_inline")
was not enough to make sure to meet the 'i' (immediate) constraint for the
asm operands.

With CONFIG_OPTIMIZE_INLINING enabled, Laura Abbott reported error
with gcc 9.1.1:

  In file included from arch/s390/crypto/prng.c:29:
  ./arch/s390/include/asm/cpacf.h: In function 'cpacf_query_func':
  ./arch/s390/include/asm/cpacf.h:170:2: warning: asm operand 3 probably doesn't match constraints
    170 |  asm volatile(
        |  ^~~
  ./arch/s390/include/asm/cpacf.h:170:2: error: impossible constraint in 'asm'

Add more __always_inline to force inlining.

Fixes: 9012d01166 ("compiler: allow all arches to enable CONFIG_OPTIMIZE_INLINING")
Reported-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
This commit is contained in:
Masahiro Yamada 2019-05-17 15:54:24 +09:00 committed by Heiko Carstens
parent bf2f1eeed0
commit d83623c5ea
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

@ -178,7 +178,7 @@ static inline void __cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
: "cc");
}
static inline int __cpacf_check_opcode(unsigned int opcode)
static __always_inline int __cpacf_check_opcode(unsigned int opcode)
{
switch (opcode) {
case CPACF_KMAC:
@ -218,7 +218,7 @@ static inline int cpacf_test_func(cpacf_mask_t *mask, unsigned int func)
return (mask->bytes[func >> 3] & (0x80 >> (func & 7))) != 0;
}
static inline int cpacf_query_func(unsigned int opcode, unsigned int func)
static __always_inline int cpacf_query_func(unsigned int opcode, unsigned int func)
{
cpacf_mask_t mask;