linux-kernel - [PATCH 3/3] x86/mce: Make mce_notify_irq() depend on CONFIG_X86_MCELOG

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20250114163722.34850-4-nik.borisov@suse.com>
Date: Tue, 14 Jan 2025 18:37:22 +0200
From: Nikolay Borisov <nik.borisov@...e.com>
To: linux-edac@...r.kernel.org
Cc: x86@...nel.org,
	linux-kernel@...r.kernel.org,
	bp@...en8.de,
	Nikolay Borisov <nik.borisov@...e.com>
Subject: [PATCH 3/3] x86/mce: Make mce_notify_irq() depend on CONFIG_X86_MCELOG_LEGACY

mce_notify_irq() really depends on the legacy mcelog being enabled as
otherwise mce_work_trigger() will never schedule the trigger work as
mce_helper can't be set unless CONFIG_X86_MCELOG_LEGACY is defined.

Signed-off-by: Nikolay Borisov <nik.borisov@...e.com>
---

In addition to making the body of this function depend on MCELOG, mce_need_notify
also depends entirely on MCELOG, however I haven't added it since I don't want to
proliferate ifdefs, this begs the qustion whether this patch is acceptable ?

 arch/x86/kernel/cpu/mce/core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
index 2544e9ae7449..4e2f6c162b43 100644
--- a/arch/x86/kernel/cpu/mce/core.c
+++ b/arch/x86/kernel/cpu/mce/core.c
@@ -591,6 +591,7 @@ EXPORT_SYMBOL_GPL(mce_is_correctable);
  */
 static int mce_notify_irq(void)
 {
+#ifdef CONFIG_X86_MCELOG_LEGACY
 	/* Not more than two messages every minute */
 	static DEFINE_RATELIMIT_STATE(ratelimit, 60*HZ, 2);

@@ -602,7 +603,7 @@ static int mce_notify_irq(void)

 		return 1;
 	}
-
+#endif
 	return 0;
 }

--
2.43.0