From: Josh Poimboeuf Date: Wed, 12 Apr 2023 23:49:33 +0000 (-0700) Subject: x86/head: Mark *_start_kernel() __noreturn X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=4208d2d79837ef70f260d6170e3ac7fd6fde7788;p=linux.git x86/head: Mark *_start_kernel() __noreturn Now that start_kernel() is __noreturn, mark its chain of callers __noreturn. Signed-off-by: Josh Poimboeuf Signed-off-by: Peter Zijlstra (Intel) Link: https://lore.kernel.org/r/c2525f96b88be98ee027ee0291d58003036d4120.1681342859.git.jpoimboe@kernel.org --- diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h index f37cbff7354c4..f3495623ac997 100644 --- a/arch/x86/include/asm/setup.h +++ b/arch/x86/include/asm/setup.h @@ -125,11 +125,11 @@ void clear_bss(void); #ifdef __i386__ -asmlinkage void __init i386_start_kernel(void); +asmlinkage void __init __noreturn i386_start_kernel(void); #else -asmlinkage void __init x86_64_start_kernel(char *real_mode); -asmlinkage void __init x86_64_start_reservations(char *real_mode_data); +asmlinkage void __init __noreturn x86_64_start_kernel(char *real_mode); +asmlinkage void __init __noreturn x86_64_start_reservations(char *real_mode_data); #endif /* __i386__ */ #endif /* _SETUP */ diff --git a/arch/x86/kernel/head32.c b/arch/x86/kernel/head32.c index ec6fefbfd3c04..10c27b4261eb0 100644 --- a/arch/x86/kernel/head32.c +++ b/arch/x86/kernel/head32.c @@ -29,7 +29,7 @@ static void __init i386_default_early_setup(void) x86_init.mpparse.setup_ioapic_ids = setup_ioapic_ids_from_mpc; } -asmlinkage __visible void __init i386_start_kernel(void) +asmlinkage __visible void __init __noreturn i386_start_kernel(void) { /* Make sure IDT is set up before any exception happens */ idt_setup_early_handler(); diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 387e4b12e823a..49f7629b17f73 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -471,7 +471,7 @@ static void __init copy_bootdata(char *real_mode_data) sme_unmap_bootdata(real_mode_data); } -asmlinkage __visible void __init x86_64_start_kernel(char * real_mode_data) +asmlinkage __visible void __init __noreturn x86_64_start_kernel(char * real_mode_data) { /* * Build-time sanity checks on the kernel image and module @@ -537,7 +537,7 @@ asmlinkage __visible void __init x86_64_start_kernel(char * real_mode_data) x86_64_start_reservations(real_mode_data); } -void __init x86_64_start_reservations(char *real_mode_data) +void __init __noreturn x86_64_start_reservations(char *real_mode_data) { /* version is always not zero if it is copied */ if (!boot_params.hdr.version) diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 9aaad9dc6c208..a436bc1e63d92 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -225,6 +225,8 @@ static bool __dead_end_function(struct objtool_file *file, struct symbol *func, "start_kernel", "stop_this_cpu", "usercopy_abort", + "x86_64_start_kernel", + "x86_64_start_reservations", "xen_cpu_bringup_again", "xen_start_kernel", };