From b4452218c4b7a579056d439b73a668b71654c137 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] [PATCH] x86-64: Enable interrupts during delay calibration on APs We used to disable them to work around a bug, but that is not needed anymore. Keeping them enabled avoids the NMI watchdog triggering in some cases. Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- arch/x86_64/kernel/smpboot.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c index 4efe36fe99aa..277ce5e91e04 100644 --- a/arch/x86_64/kernel/smpboot.c +++ b/arch/x86_64/kernel/smpboot.c @@ -413,8 +413,13 @@ void __cpuinit smp_callin(void) /* * Get our bogomips. + * + * Need to enable IRQs because it can take longer and then + * the NMI watchdog might kill us. */ + local_irq_enable(); calibrate_delay(); + local_irq_disable(); Dprintk("Stack at about %p\n",&cpuid); disable_APIC_timer();