linux-kernel - [PATCH 4/5] s390/kdump: Mark __machine_kexec as _

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251110132803.1520-4-thorsten.blum@linux.dev>
Date: Mon, 10 Nov 2025 14:27:54 +0100
From: Thorsten Blum <thorsten.blum@...ux.dev>
To: Heiko Carstens <hca@...ux.ibm.com>,
	Vasily Gorbik <gor@...ux.ibm.com>,
	Alexander Gordeev <agordeev@...ux.ibm.com>,
	Christian Borntraeger <borntraeger@...ux.ibm.com>,
	Sven Schnelle <svens@...ux.ibm.com>
Cc: Thorsten Blum <thorsten.blum@...ux.dev>,
	linux-s390@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 4/5] s390/kdump: Mark __machine_kexec as __noreturn

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

Signed-off-by: Thorsten Blum <thorsten.blum@...ux.dev>
---
 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 6de5e0fde49a..d78e6e3d962f 100644
--- a/arch/s390/kernel/machine_kexec.c
+++ b/arch/s390/kernel/machine_kexec.c
@@ -248,7 +248,7 @@ static void __noreturn __do_machine_kexec(void *data)
 /*
  * Reset system and call either kdump or normal kexec
  */
-static void __machine_kexec(void *data)
+static void __noreturn __machine_kexec(void *data)
 {
 	pfault_fini();
 	tracing_off();
-- 
2.51.1