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s390/base: remove unused s390_base_mcck_handler 

s390_base_mcck_handler was used during system reset if diag308 set was
not available. But after commit d485235b00 ("s390: assume diag308 set
always works") is a dead code and could be removed.

Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Vasily Gorbik 2019-09-02 16:59:32 +02:00
parent 4df9a82549
commit 512222789c
2 changed files with 0 additions and 23 deletions
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2
arch/s390/include/asm/processor.h
View File

@ -324,11 +324,9 @@ static inline void __noreturn disabled_wait(void)
* Basic Machine Check/Program Check Handler. * Basic Machine Check/Program Check Handler.
*/ */
extern void s390_base_mcck_handler(void);
extern void s390_base_pgm_handler(void); extern void s390_base_pgm_handler(void);
extern void s390_base_ext_handler(void); extern void s390_base_ext_handler(void);
extern void (*s390_base_mcck_handler_fn)(void);
extern void (*s390_base_pgm_handler_fn)(void); extern void (*s390_base_pgm_handler_fn)(void);
extern void (*s390_base_ext_handler_fn)(void); extern void (*s390_base_ext_handler_fn)(void);

21
arch/s390/kernel/base.S
View File

@ -16,27 +16,6 @@
GEN_BR_THUNK %r9 GEN_BR_THUNK %r9
GEN_BR_THUNK %r14 GEN_BR_THUNK %r14
ENTRY(s390_base_mcck_handler)
basr %r13,0
0: lg %r15,__LC_NODAT_STACK # load panic stack
aghi %r15,-STACK_FRAME_OVERHEAD
larl %r1,s390_base_mcck_handler_fn
lg %r9,0(%r1)
ltgr %r9,%r9
jz 1f
BASR_EX %r14,%r9
1: la %r1,4095
lmg %r0,%r15,__LC_GPREGS_SAVE_AREA-4095(%r1)
lpswe __LC_MCK_OLD_PSW
ENDPROC(s390_base_mcck_handler)
.section .bss
.align 8
.globl s390_base_mcck_handler_fn
s390_base_mcck_handler_fn:
.quad 0
.previous
ENTRY(s390_base_ext_handler) ENTRY(s390_base_ext_handler)
stmg %r0,%r15,__LC_SAVE_AREA_ASYNC stmg %r0,%r15,__LC_SAVE_AREA_ASYNC
basr %r13,0 basr %r13,0