Messages in this thread Patch in this message | | | Date | Fri, 8 Jun 2007 20:46:50 +0200 | From | Björn Steinbrink <> | Subject | Re: [PATCH 1/2] i386: Fix NMI watchdog not reserving its MSRs |
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At system boot time, the NMI watchdog no longer reserved its MSRs, allowing other subsystems to mess with them. Fix that.
Signed-off-by: Björn Steinbrink <B.Steinbrink@gmx.de> --- diff --git a/arch/i386/kernel/cpu/perfctr-watchdog.c b/arch/i386/kernel/cpu/perfctr-watchdog.c index 2b04c8f..f0b6763 100644 --- a/arch/i386/kernel/cpu/perfctr-watchdog.c +++ b/arch/i386/kernel/cpu/perfctr-watchdog.c @@ -614,6 +614,12 @@ int lapic_watchdog_init(unsigned nmi_hz) probe_nmi_watchdog(); if (!wd_ops) return -1; + + if (!wd_ops->reserve()) { + printk(KERN_ERR + "NMI watchdog: cannot reserve perfctrs\n"); + return -1; + } } if (!(wd_ops->setup(nmi_hz))) { - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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