This is a note to let you know that I've just added the patch titled
sh/cpu: Switch to arch_cpu_finalize_init()
to the 4.19-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:
sh-cpu-switch-to-arch_cpu_finalize_init.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 3ea1c65b457df5417ae78185f0381816b6d0c22c Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Date: Wed, 14 Jun 2023 01:39:33 +0200
Subject: sh/cpu: Switch to arch_cpu_finalize_init()
From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
commit 01eb454e9bfe593f320ecbc9aaec60bf87cd453d upstream
check_bugs() is about to be phased out. Switch over to the new
arch_cpu_finalize_init() implementation.
No functional change.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230613224545.371697797@xxxxxxxxxxxxx
Signed-off-by: Daniel Sneddon <daniel.sneddon@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/sh/Kconfig | 1
arch/sh/include/asm/bugs.h | 78 ----------------------------------------
arch/sh/include/asm/processor.h | 2 +
arch/sh/kernel/idle.c | 1
arch/sh/kernel/setup.c | 55 ++++++++++++++++++++++++++++
5 files changed, 59 insertions(+), 78 deletions(-)
delete mode 100644 arch/sh/include/asm/bugs.h
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
config SUPERH
def_bool y
+ select ARCH_HAS_CPU_FINALIZE_INIT
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_MIGHT_HAVE_PC_PARPORT
--- a/arch/sh/include/asm/bugs.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __ASM_SH_BUGS_H
-#define __ASM_SH_BUGS_H
-
-/*
- * This is included by init/main.c to check for architecture-dependent bugs.
- *
- * Needs:
- * void check_bugs(void);
- */
-
-/*
- * I don't know of any Super-H bugs yet.
- */
-
-#include <asm/processor.h>
-
-extern void select_idle_routine(void);
-
-static void __init check_bugs(void)
-{
- extern unsigned long loops_per_jiffy;
- char *p = &init_utsname()->machine[2]; /* "sh" */
-
- select_idle_routine();
-
- current_cpu_data.loops_per_jiffy = loops_per_jiffy;
-
- switch (current_cpu_data.family) {
- case CPU_FAMILY_SH2:
- *p++ = '2';
- break;
- case CPU_FAMILY_SH2A:
- *p++ = '2';
- *p++ = 'a';
- break;
- case CPU_FAMILY_SH3:
- *p++ = '3';
- break;
- case CPU_FAMILY_SH4:
- *p++ = '4';
- break;
- case CPU_FAMILY_SH4A:
- *p++ = '4';
- *p++ = 'a';
- break;
- case CPU_FAMILY_SH4AL_DSP:
- *p++ = '4';
- *p++ = 'a';
- *p++ = 'l';
- *p++ = '-';
- *p++ = 'd';
- *p++ = 's';
- *p++ = 'p';
- break;
- case CPU_FAMILY_SH5:
- *p++ = '6';
- *p++ = '4';
- break;
- case CPU_FAMILY_UNKNOWN:
- /*
- * Specifically use CPU_FAMILY_UNKNOWN rather than
- * default:, so we're able to have the compiler whine
- * about unhandled enumerations.
- */
- break;
- }
-
- printk("CPU: %s\n", get_cpu_subtype(¤t_cpu_data));
-
-#ifndef __LITTLE_ENDIAN__
- /* 'eb' means 'Endian Big' */
- *p++ = 'e';
- *p++ = 'b';
-#endif
- *p = '\0';
-}
-#endif /* __ASM_SH_BUGS_H */
--- a/arch/sh/include/asm/processor.h
+++ b/arch/sh/include/asm/processor.h
@@ -173,6 +173,8 @@ extern unsigned int instruction_size(uns
#define instruction_size(insn) (4)
#endif
+void select_idle_routine(void);
+
#endif /* __ASSEMBLY__ */
#ifdef CONFIG_SUPERH32
--- a/arch/sh/kernel/idle.c
+++ b/arch/sh/kernel/idle.c
@@ -18,6 +18,7 @@
#include <linux/smp.h>
#include <linux/atomic.h>
#include <asm/pgalloc.h>
+#include <asm/processor.h>
#include <asm/smp.h>
#include <asm/bl_bit.h>
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -42,6 +42,7 @@
#include <asm/smp.h>
#include <asm/mmu_context.h>
#include <asm/mmzone.h>
+#include <asm/processor.h>
#include <asm/sparsemem.h>
/*
@@ -361,3 +362,57 @@ int test_mode_pin(int pin)
{
return sh_mv.mv_mode_pins() & pin;
}
+
+void __init arch_cpu_finalize_init(void)
+{
+ char *p = &init_utsname()->machine[2]; /* "sh" */
+
+ select_idle_routine();
+
+ current_cpu_data.loops_per_jiffy = loops_per_jiffy;
+
+ switch (current_cpu_data.family) {
+ case CPU_FAMILY_SH2:
+ *p++ = '2';
+ break;
+ case CPU_FAMILY_SH2A:
+ *p++ = '2';
+ *p++ = 'a';
+ break;
+ case CPU_FAMILY_SH3:
+ *p++ = '3';
+ break;
+ case CPU_FAMILY_SH4:
+ *p++ = '4';
+ break;
+ case CPU_FAMILY_SH4A:
+ *p++ = '4';
+ *p++ = 'a';
+ break;
+ case CPU_FAMILY_SH4AL_DSP:
+ *p++ = '4';
+ *p++ = 'a';
+ *p++ = 'l';
+ *p++ = '-';
+ *p++ = 'd';
+ *p++ = 's';
+ *p++ = 'p';
+ break;
+ case CPU_FAMILY_UNKNOWN:
+ /*
+ * Specifically use CPU_FAMILY_UNKNOWN rather than
+ * default:, so we're able to have the compiler whine
+ * about unhandled enumerations.
+ */
+ break;
+ }
+
+ pr_info("CPU: %s\n", get_cpu_subtype(¤t_cpu_data));
+
+#ifndef __LITTLE_ENDIAN__
+ /* 'eb' means 'Endian Big' */
+ *p++ = 'e';
+ *p++ = 'b';
+#endif
+ *p = '\0';
+}
Patches currently in stable-queue which might be from tglx@xxxxxxxxxxxxx are
queue-4.19/x86-cpu-switch-to-arch_cpu_finalize_init.patch
queue-4.19/arm-cpu-switch-to-arch_cpu_finalize_init.patch
queue-4.19/um-cpu-switch-to-arch_cpu_finalize_init.patch
queue-4.19/mips-cpu-switch-to-arch_cpu_finalize_init.patch
queue-4.19/init-x86-move-mem_encrypt_init-into-arch_cpu_finalize_init.patch
queue-4.19/sh-cpu-switch-to-arch_cpu_finalize_init.patch
queue-4.19/init-invoke-arch_cpu_finalize_init-earlier.patch
queue-4.19/x86-xen-fix-secondary-processors-fpu-initialization.patch
queue-4.19/x86-fpu-move-fpu-initialization-into-arch_cpu_finalize_init.patch
queue-4.19/init-remove-check_bugs-leftovers.patch
queue-4.19/init-provide-arch_cpu_finalize_init.patch
queue-4.19/m68k-cpu-switch-to-arch_cpu_finalize_init.patch
queue-4.19/sparc-cpu-switch-to-arch_cpu_finalize_init.patch
queue-4.19/x86-fpu-mark-init-functions-__init.patch
queue-4.19/ia64-cpu-switch-to-arch_cpu_finalize_init.patch
queue-4.19/x86-fpu-remove-cpuinfo-argument-from-init-functions.patch
