Fixes the following warning: vmlinux.o: warning: objtool: x86_64_start_reservations+0x28: unreachable instruction Reported-by: kernel test robot <lkp@xxxxxxxxx> Link: https://lore.kernel.org/r/202302161142.K3ziREaj-lkp@xxxxxxxxx/ Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx> --- include/linux/start_kernel.h | 2 +- init/main.c | 2 +- tools/objtool/check.c | 1 + 3 files changed, 3 insertions(+), 2 deletions(-) diff --git a/include/linux/start_kernel.h b/include/linux/start_kernel.h index 864921e54c92..a9806a44a605 100644 --- a/include/linux/start_kernel.h +++ b/include/linux/start_kernel.h @@ -8,7 +8,7 @@ /* Define the prototype for start_kernel here, rather than cluttering up something else. */ -extern asmlinkage void __init start_kernel(void); +extern asmlinkage void __init __noreturn start_kernel(void); extern void __init __noreturn arch_call_rest_init(void); extern void __ref __noreturn rest_init(void); diff --git a/init/main.c b/init/main.c index 161ed956d738..65aab4e9bb49 100644 --- a/init/main.c +++ b/init/main.c @@ -937,7 +937,7 @@ static void __init print_unknown_bootoptions(void) memblock_free(unknown_options, len); } -asmlinkage __visible void __init __no_sanitize_address start_kernel(void) +asmlinkage __visible void __init __no_sanitize_address __noreturn start_kernel(void) { char *command_line; char *after_dashes; diff --git a/tools/objtool/check.c b/tools/objtool/check.c index e7442e7ad676..a6f9a4aeb77b 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -222,6 +222,7 @@ static bool __dead_end_function(struct objtool_file *file, struct symbol *func, "rewind_stack_and_make_dead", "sev_es_terminate", "snp_abort", + "start_kernel", "stop_this_cpu", "usercopy_abort", "xen_cpu_bringup_again", -- 2.39.2
