[PATCH 3/5] s390/kdump: Mark __do_machine_kexec as __noreturn

From: Thorsten Blum
Date: Mon Nov 10 2025 - 08:33:06 EST


__do_machine_kexec() ends by calling the non-returning function
disabled_wait() and therefore also never returns. Annotate it with the
__noreturn attribute to improve compiler optimizations.

Signed-off-by: Thorsten Blum <thorsten.blum@xxxxxxxxx>
---
arch/s390/kernel/machine_kexec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c
index b6b0a85816f3..6de5e0fde49a 100644
--- a/arch/s390/kernel/machine_kexec.c
+++ b/arch/s390/kernel/machine_kexec.c
@@ -224,7 +224,7 @@ void machine_crash_shutdown(struct pt_regs *regs)
/*
* Do normal kexec
*/
-static void __do_machine_kexec(void *data)
+static void __noreturn __do_machine_kexec(void *data)
{
unsigned long data_mover, entry, diag308_subcode;
struct kimage *image = data;
--
2.51.1