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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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512222789c
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>
64 lines
1.3 KiB
ArmAsm
64 lines
1.3 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* arch/s390/kernel/base.S
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*
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* Copyright IBM Corp. 2006, 2007
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* Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
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* Michael Holzheu <holzheu@de.ibm.com>
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*/
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#include <linux/linkage.h>
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#include <asm/asm-offsets.h>
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#include <asm/nospec-insn.h>
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#include <asm/ptrace.h>
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#include <asm/sigp.h>
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GEN_BR_THUNK %r9
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GEN_BR_THUNK %r14
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ENTRY(s390_base_ext_handler)
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stmg %r0,%r15,__LC_SAVE_AREA_ASYNC
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basr %r13,0
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0: aghi %r15,-STACK_FRAME_OVERHEAD
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larl %r1,s390_base_ext_handler_fn
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lg %r9,0(%r1)
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ltgr %r9,%r9
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jz 1f
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BASR_EX %r14,%r9
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1: lmg %r0,%r15,__LC_SAVE_AREA_ASYNC
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ni __LC_EXT_OLD_PSW+1,0xfd # clear wait state bit
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lpswe __LC_EXT_OLD_PSW
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ENDPROC(s390_base_ext_handler)
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.section .bss
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.align 8
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.globl s390_base_ext_handler_fn
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s390_base_ext_handler_fn:
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.quad 0
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.previous
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ENTRY(s390_base_pgm_handler)
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stmg %r0,%r15,__LC_SAVE_AREA_SYNC
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basr %r13,0
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0: aghi %r15,-STACK_FRAME_OVERHEAD
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larl %r1,s390_base_pgm_handler_fn
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lg %r9,0(%r1)
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ltgr %r9,%r9
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jz 1f
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BASR_EX %r14,%r9
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lmg %r0,%r15,__LC_SAVE_AREA_SYNC
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lpswe __LC_PGM_OLD_PSW
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1: lpswe disabled_wait_psw-0b(%r13)
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ENDPROC(s390_base_pgm_handler)
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.align 8
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disabled_wait_psw:
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.quad 0x0002000180000000,0x0000000000000000 + s390_base_pgm_handler
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.section .bss
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.align 8
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.globl s390_base_pgm_handler_fn
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s390_base_pgm_handler_fn:
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.quad 0
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.previous
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