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s390/entry: Move early program check handler to entry.S

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BugLink: https://bugs.launchpad.net/bugs/2097301

[ Upstream commit f2bb5b97b51ce5425e8f59f899643ce4eadba667 ]

Have all program check handlers in one file to make future changes easy.

Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Stable-dep-of: f101b305a7b9 ("s390/entry: Make early program check handler relocated lowcore aware")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
This commit is contained in:
Heiko Carstens
2024-07-31 15:25:59 +02:00
committed by Mehmet Basaran
parent 48b137e6e0
commit 53fb61e437
3 changed files with 16 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/s390/kernel/Makefile
+1 -1
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@@ -36,7 +36,7 @@ CFLAGS_stacktrace.o += -fno-optimize-sibling-calls
CFLAGS_dumpstack.o += -fno-optimize-sibling-calls
CFLAGS_unwind_bc.o += -fno-optimize-sibling-calls
obj-y := head64.o traps.o time.o process.o earlypgm.o early.o setup.o idle.o vtime.o
obj-y := head64.o traps.o time.o process.o early.o setup.o idle.o vtime.o
obj-y += processor.o syscall.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o
obj-y += debug.o irq.o ipl.o dis.o diag.o vdso.o cpufeature.o
obj-y += sysinfo.o lgr.o os_info.o ctlreg.o
arch/s390/kernel/earlypgm.S
-23
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@@ -1,23 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright IBM Corp. 2006, 2007
* Author(s): Michael Holzheu <holzheu@de.ibm.com>
*/
#include <linux/linkage.h>
#include <asm/asm-offsets.h>
SYM_CODE_START(early_pgm_check_handler)
stmg %r8,%r15,__LC_SAVE_AREA_SYNC
aghi %r15,-(STACK_FRAME_OVERHEAD+__PT_SIZE)
la %r11,STACK_FRAME_OVERHEAD(%r15)
xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
stmg %r0,%r7,__PT_R0(%r11)
mvc __PT_PSW(16,%r11),__LC_PGM_OLD_PSW
mvc __PT_R8(64,%r11),__LC_SAVE_AREA_SYNC
lgr %r2,%r11
brasl %r14,__do_early_pgm_check
mvc __LC_RETURN_PSW(16),STACK_FRAME_OVERHEAD+__PT_PSW(%r15)
lmg %r0,%r15,STACK_FRAME_OVERHEAD+__PT_R0(%r15)
lpswe __LC_RETURN_PSW
SYM_CODE_END(early_pgm_check_handler)
arch/s390/kernel/entry.S
+15
View File
@@ -621,6 +621,21 @@ SYM_CODE_START(restart_int_handler)
3: j 3b
SYM_CODE_END(restart_int_handler)
SYM_CODE_START(early_pgm_check_handler)
stmg %r8,%r15,__LC_SAVE_AREA_SYNC
aghi %r15,-(STACK_FRAME_OVERHEAD+__PT_SIZE)
la %r11,STACK_FRAME_OVERHEAD(%r15)
xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
stmg %r0,%r7,__PT_R0(%r11)
mvc __PT_PSW(16,%r11),__LC_PGM_OLD_PSW
mvc __PT_R8(64,%r11),__LC_SAVE_AREA_SYNC
lgr %r2,%r11
brasl %r14,__do_early_pgm_check
mvc __LC_RETURN_PSW(16),STACK_FRAME_OVERHEAD+__PT_PSW(%r15)
lmg %r0,%r15,STACK_FRAME_OVERHEAD+__PT_R0(%r15)
lpswe __LC_RETURN_PSW
SYM_CODE_END(early_pgm_check_handler)
.section .kprobes.text, "ax"
#if defined(CONFIG_CHECK_STACK) || defined(CONFIG_VMAP_STACK)