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authorLinus Torvalds <torvalds@linux-foundation.org>2023-04-28 14:02:54 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2023-04-28 14:02:54 -0700
commit2aff7c706c7483f4895ca250c92c1d71e45b6e82 (patch)
treecee7e1a55c8fc61e686912076b10f246ca9d6760 /arch/sh
parent22b8cc3e78f5448b4c5df00303817a9137cd663f (diff)
parent611d4c716db0141cfc436994dc5aff1d69c924ad (diff)
Merge tag 'objtool-core-2023-04-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool updates from Ingo Molnar: - Mark arch_cpu_idle_dead() __noreturn, make all architectures & drivers that did this inconsistently follow this new, common convention, and fix all the fallout that objtool can now detect statically - Fix/improve the ORC unwinder becoming unreliable due to UNWIND_HINT_EMPTY ambiguity, split it into UNWIND_HINT_END_OF_STACK and UNWIND_HINT_UNDEFINED to resolve it - Fix noinstr violations in the KCSAN code and the lkdtm/stackleak code - Generate ORC data for __pfx code - Add more __noreturn annotations to various kernel startup/shutdown and panic functions - Misc improvements & fixes * tag 'objtool-core-2023-04-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (52 commits) x86/hyperv: Mark hv_ghcb_terminate() as noreturn scsi: message: fusion: Mark mpt_halt_firmware() __noreturn x86/cpu: Mark {hlt,resume}_play_dead() __noreturn btrfs: Mark btrfs_assertfail() __noreturn objtool: Include weak functions in global_noreturns check cpu: Mark nmi_panic_self_stop() __noreturn cpu: Mark panic_smp_self_stop() __noreturn arm64/cpu: Mark cpu_park_loop() and friends __noreturn x86/head: Mark *_start_kernel() __noreturn init: Mark start_kernel() __noreturn init: Mark [arch_call_]rest_init() __noreturn objtool: Generate ORC data for __pfx code x86/linkage: Fix padding for typed functions objtool: Separate prefix code from stack validation code objtool: Remove superfluous dead_end_function() check objtool: Add symbol iteration helpers objtool: Add WARN_INSN() scripts/objdump-func: Support multiple functions context_tracking: Fix KCSAN noinstr violation objtool: Add stackleak instrumentation to uaccess safe list ...
Diffstat (limited to 'arch/sh')
-rw-r--r--arch/sh/include/asm/smp-ops.h5
-rw-r--r--arch/sh/kernel/idle.c3
2 files changed, 5 insertions, 3 deletions
diff --git a/arch/sh/include/asm/smp-ops.h b/arch/sh/include/asm/smp-ops.h
index e27702130eb6..97331fcb7b85 100644
--- a/arch/sh/include/asm/smp-ops.h
+++ b/arch/sh/include/asm/smp-ops.h
@@ -24,9 +24,10 @@ static inline void plat_smp_setup(void)
mp_ops->smp_setup();
}
-static inline void play_dead(void)
+static inline void __noreturn play_dead(void)
{
mp_ops->play_dead();
+ BUG();
}
extern void register_smp_ops(struct plat_smp_ops *ops);
@@ -42,7 +43,7 @@ static inline void register_smp_ops(struct plat_smp_ops *ops)
{
}
-static inline void play_dead(void)
+static inline void __noreturn play_dead(void)
{
BUG();
}
diff --git a/arch/sh/kernel/idle.c b/arch/sh/kernel/idle.c
index 3418c40f0099..d662503b0665 100644
--- a/arch/sh/kernel/idle.c
+++ b/arch/sh/kernel/idle.c
@@ -4,6 +4,7 @@
*
* Copyright (C) 2002 - 2009 Paul Mundt
*/
+#include <linux/cpu.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/mm.h>
@@ -29,7 +30,7 @@ void default_idle(void)
clear_bl_bit();
}
-void arch_cpu_idle_dead(void)
+void __noreturn arch_cpu_idle_dead(void)
{
play_dead();
}