This is a note to let you know that I've just added the patch titled
s390/entry: Move early program check handler to entry.S
to the 6.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
s390-entry-move-early-program-check-handler-to-entry.patch
and it can be found in the queue-6.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3cfdfd185ee9c4f512ceab31504305dea2460722
Author: Heiko Carstens <hca@xxxxxxxxxxxxx>
Date: Wed Jul 31 15:25:59 2024 +0200
s390/entry: Move early program check handler to entry.S
[ Upstream commit f2bb5b97b51ce5425e8f59f899643ce4eadba667 ]
Have all program check handlers in one file to make future changes easy.
Reviewed-by: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
Reviewed-by: Sven Schnelle <svens@xxxxxxxxxxxxx>
Signed-off-by: Heiko Carstens <hca@xxxxxxxxxxxxx>
Signed-off-by: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Stable-dep-of: f101b305a7b9 ("s390/entry: Make early program check handler relocated lowcore aware")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index e47a4be54ff8e..a70f25e9c17da 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -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
diff --git a/arch/s390/kernel/earlypgm.S b/arch/s390/kernel/earlypgm.S
deleted file mode 100644
index c634871f0d905..0000000000000
--- a/arch/s390/kernel/earlypgm.S
+++ /dev/null
@@ -1,23 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright IBM Corp. 2006, 2007
- * Author(s): Michael Holzheu <holzheu@xxxxxxxxxx>
- */
-
-#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)
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 749410cfdbc07..b01f4ac43f729 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -599,6 +599,21 @@ 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)
