[tip:,objtool/core] x86/head: Mark *_start_kernel() __noreturn
Commit Message
The following commit has been merged into the objtool/core branch of tip:
Commit-ID: 4208d2d79837ef70f260d6170e3ac7fd6fde7788
Gitweb: https://git.kernel.org/tip/4208d2d79837ef70f260d6170e3ac7fd6fde7788
Author: Josh Poimboeuf <jpoimboe@kernel.org>
AuthorDate: Wed, 12 Apr 2023 16:49:33 -07:00
Committer: Peter Zijlstra <peterz@infradead.org>
CommitterDate: Fri, 14 Apr 2023 17:31:24 +02:00
x86/head: Mark *_start_kernel() __noreturn
Now that start_kernel() is __noreturn, mark its chain of callers
__noreturn.
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/c2525f96b88be98ee027ee0291d58003036d4120.1681342859.git.jpoimboe@kernel.org
---
arch/x86/include/asm/setup.h | 6 +++---
arch/x86/kernel/head32.c | 2 +-
arch/x86/kernel/head64.c | 4 ++--
tools/objtool/check.c | 2 ++
4 files changed, 8 insertions(+), 6 deletions(-)
@@ -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 */
@@ -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();
@@ -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)
@@ -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",
};