Ingo Molnar wrote:
> got this on a testbox:
>
> [ 0.113333] WARNING: at arch/x86/kernel/apic/apic.c:253 warn_slowpath_null+0x28/0x50()
>
> Ingo
>
> [ 0.000000] Initializing cgroup subsys cpuset
> [ 0.000000] Linux version 2.6.30-rc5-tip-01553-g4bc9bac-dirty (mingo@sirius) (gcc version 4.3.2 20081105 (Red Hat 4.3.2-7) (GCC) ) #48764 SMP PREEMPT Tue May 12 18:30:18 CEST 2009
> [ 0.000000] Command line: root=/dev/sda1 earlyprintk=serial,ttyS0,115200 console=ttyS0,115200 console=tty debug initcall_debug apic=verbose sysrq_always_enabled 5 ignore_loglevel nosmp no_hz=off highres=0 nmi_watchdog=0 noapic nolapic_timer hpet=disable idle=poll notsc acpi=off
you should use
nolapic and noapic_timer
/* same as disableapic, for compatibility */
static int __init setup_nolapic(char *arg)
{
return setup_disableapic(arg);
}
early_param("nolapic", setup_nolapic);
static int __init parse_disable_apic_timer(char *arg)
{
disable_apic_timer = 1;
return 0;
}
early_param("noapictimer", parse_disable_apic_timer);
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