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From: ayankumarh@gmail.com (AYAN KUMAR HALDER)
To: kernelnewbies@lists.kernelnewbies.org
Subject: Kernel booting stuck at "CPU1: Booted secondary processor"
Date: Tue, 17 Mar 2015 11:44:44 +0530	[thread overview]
Message-ID: <CAGAs2AkU=mGxjm1sLNiSqD7yvxROUxRrqqN0z4QBrPCRkdnVvg@mail.gmail.com> (raw)

Hi,

I am porting kernel (3.14.22) on a custom ARM(Cortex A9 x 3) based platform.
I was able to get it working on uniprocessor mode.
Now I wish to get the SMP mode working as mine is Cortex A9 x3 platform.
However, I see that the booting gets stuck after the following log:-

CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
Setting up static identity map for 0x1f9690 - 0x1f96c4
CPU1: Booted secondary processor

When I debugged it further, I found that it waits endlessly in a
arch_spin_lock() :-

while (lockval.tickets.next != lockval.tickets.owner) { // loops here
        wfe();
        lockval.tickets.owner = ACCESS_ONCE(lock->tickets.owner);
    }

It would be great if someone can give me pointers about how to proceed ahead.

Regards,
Ayan kumar Halder

             reply	other threads:[~2015-03-17  6:14 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-17  6:14 AYAN KUMAR HALDER [this message]
2015-03-17  9:44 ` Kernel booting stuck at "CPU1: Booted secondary processor" Arun KS

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