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author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-04-28 14:02:54 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-04-28 14:02:54 -0700 |
commit | 2aff7c706c7483f4895ca250c92c1d71e45b6e82 (patch) | |
tree | cee7e1a55c8fc61e686912076b10f246ca9d6760 /arch/arm64/kernel/smp.c | |
parent | 22b8cc3e78f5448b4c5df00303817a9137cd663f (diff) | |
parent | 611d4c716db0141cfc436994dc5aff1d69c924ad (diff) | |
download | linux-2aff7c706c7483f4895ca250c92c1d71e45b6e82.tar.gz |
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/arm64/kernel/smp.c')
-rw-r--r-- | arch/arm64/kernel/smp.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index 4e8327264255..05fe797e4203 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -361,7 +361,7 @@ void __cpu_die(unsigned int cpu) * Called from the idle thread for the CPU which has been shutdown. * */ -void cpu_die(void) +void __noreturn cpu_die(void) { unsigned int cpu = smp_processor_id(); const struct cpu_operations *ops = get_cpu_ops(cpu); @@ -398,7 +398,7 @@ static void __cpu_try_die(int cpu) * Kill the calling secondary CPU, early in bringup before it is turned * online. */ -void cpu_die_early(void) +void __noreturn cpu_die_early(void) { int cpu = smp_processor_id(); @@ -816,7 +816,7 @@ void arch_irq_work_raise(void) } #endif -static void local_cpu_stop(void) +static void __noreturn local_cpu_stop(void) { set_cpu_online(smp_processor_id(), false); @@ -830,7 +830,7 @@ static void local_cpu_stop(void) * that cpu_online_mask gets correctly updated and smp_send_stop() can skip * CPUs that have already stopped themselves. */ -void panic_smp_self_stop(void) +void __noreturn panic_smp_self_stop(void) { local_cpu_stop(); } @@ -839,7 +839,7 @@ void panic_smp_self_stop(void) static atomic_t waiting_for_crash_ipi = ATOMIC_INIT(0); #endif -static void ipi_cpu_crash_stop(unsigned int cpu, struct pt_regs *regs) +static void __noreturn ipi_cpu_crash_stop(unsigned int cpu, struct pt_regs *regs) { #ifdef CONFIG_KEXEC_CORE crash_save_cpu(regs, cpu); @@ -854,6 +854,8 @@ static void ipi_cpu_crash_stop(unsigned int cpu, struct pt_regs *regs) /* just in case */ cpu_park_loop(); +#else + BUG(); #endif } |