Re: [PATCH 1/5] Fix soft-lookup in stop machine on secondary cpubring up

[Igor Mammedov]

On 05/09/2012 05:04 PM, Shuah Khan wrote:
> On Wed, 2012-05-09 at 12:24 +0200, Igor Mammedov wrote:
> > When bringing up cpuX1, it could stall in start_secondary
> > before setting cpu_callin_mask for more than 5 sec. That forces
> > do_boot_cpu() to give up on waiting and go to error return path
> > printing messages:
> >    pr_err("CPU%d: Stuck ??\n", cpuX1);
>
> I am seeing this with the linux-next May 7th build on my laptop HP
> EliteBook 8440p during boot. Could this problem be not specific to virt
> envs.? Anybody else seeing it?

I could only guess that on bare metal SMI or other firmware issue may interfere with AP boot.
Could you test if this patch-set fixes issue for you?
And do you see the same problem during suspend/resume (assuming that it's booted without problem)?

--
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 Igor
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