| 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
| ||
|
Message-Id: <455B38EC.76E4.0078.0@novell.com>
Date: Wed, 15 Nov 2006 14:57:32 +0000
From: "Jan Beulich" <jbeulich@...ell.com>
To: <linux-kernel@...r.kernel.org>
Subject: [PATCH] i386: conditionalize touching of memory in
touch_nmi_watchdog()
Just like on x86-64, don't touch foreign CPUs' memory if the watchdog
isn't enabled at all.
Signed-off-by: Jan Beulich <jbeulich@...ell.com>
--- linux-2.6.19-rc5/arch/i386/kernel/nmi.c 2006-11-08 09:21:37.000000000 +0100
+++ 2.6.19-rc5-i386-touch_nmi_watchdog/arch/i386/kernel/nmi.c 2006-11-06 09:10:16.000000000 +0100
@@ -867,14 +867,16 @@ static unsigned int
void touch_nmi_watchdog (void)
{
- int i;
+ if (nmi_watchdog > 0) {
+ unsigned cpu;
- /*
- * Just reset the alert counters, (other CPUs might be
- * spinning on locks we hold):
- */
- for_each_possible_cpu(i)
- alert_counter[i] = 0;
+ /*
+ * Just reset the alert counters, (other CPUs might be
+ * spinning on locks we hold):
+ */
+ for_each_present_cpu (cpu)
+ alert_counter[cpu] = 0;
+ }
/*
* Tickle the softlockup detector too:
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists