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Re: [Patch V2] x86, mce: Ensure offline CPU's don't participate in mce rendezvous process.

From Borislav Petkov <bp@alien8.de>
Newsgroups linux.kernel
Subject Re: [Patch V2] x86, mce: Ensure offline CPU's don't participate in mce rendezvous process.
Date 2015-12-07 21:30 +0100
Message-ID <qDaA1-T7-7@gated-at.bofh.it> (permalink)
References <qC7Xz-Qn-5@gated-at.bofh.it> <qDagG-Lz-7@gated-at.bofh.it> <qDagG-Lz-5@gated-at.bofh.it>
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On Mon, Dec 07, 2015 at 08:04:30PM +0000, Luck, Tony wrote:
> >  Kernel panic - not syncing: Timeout: Not all CPUs entered broadcast exception handler
> 
> Is that what we printed in this case? ... boy is that a misleading message ... we got *extra*
> cpus (the offline ones), not "Not all".
> 
> Good job we have a fix :-)

Well, we still have that printk string in there.

And that is incorrect too, because the MCE (at least the one I'm
injecting) gets broadcasted to the CPUs on the *node* and not to the
whole system.

If we had to be precise, text should say "Not all CPUs which the MCE was
broadcasted to entered the exception handler..."

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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Thread

[Patch V2] x86, mce: Ensure offline CPU's don't participate in mce  rendezvous process. Ashok Raj <ashok.raj@intel.com> - 2015-12-05 00:30 +0100
  RE: [Patch V2] x86, mce: Ensure offline CPU's don't participate in  mce rendezvous process. "Luck, Tony" <tony.luck@intel.com> - 2015-12-07 21:10 +0100
    Re: [Patch V2] x86, mce: Ensure offline CPU's don't participate in  mce rendezvous process. Borislav Petkov <bp@alien8.de> - 2015-12-07 21:30 +0100
      RE: [Patch V2] x86, mce: Ensure offline CPU's don't participate in  mce rendezvous process. "Luck, Tony" <tony.luck@intel.com> - 2015-12-07 23:10 +0100
        Re: [Patch V2] x86, mce: Ensure offline CPU's don't participate in  mce rendezvous process. Borislav Petkov <bp@alien8.de> - 2015-12-07 23:40 +0100
          Re: [Patch V2] x86, mce: Ensure offline CPU's don't participate in  mce rendezvous process. "Raj, Ashok" <ashok.raj@intel.com> - 2015-12-07 23:50 +0100
            Re: [Patch V2] x86, mce: Ensure offline CPU's don't participate in  mce rendezvous process. Borislav Petkov <bp@alien8.de> - 2015-12-08 00:30 +0100
              Re: [Patch V2] x86, mce: Ensure offline CPU's don't participate in  mce rendezvous process. "Raj, Ashok" <ashok.raj@intel.com> - 2015-12-08 01:50 +0100
                Re: [Patch V2] x86, mce: Ensure offline CPU's don't participate in  mce rendezvous process. Borislav Petkov <bp@alien8.de> - 2015-12-08 10:20 +0100
                RE: [Patch V2] x86, mce: Ensure offline CPU's don't participate in  mce rendezvous process. "Luck, Tony" <tony.luck@intel.com> - 2015-12-08 17:10 +0100
                Re: [Patch V2] x86, mce: Ensure offline CPU's don't participate in  mce rendezvous process. Borislav Petkov <bp@alien8.de> - 2015-12-08 20:00 +0100
          Re: [Patch V2] x86, mce: Ensure offline CPU's don't participate in  mce rendezvous process. "Luck, Tony" <tony.luck@intel.com> - 2015-12-08 00:30 +0100
  Re: [Patch V2] x86, mce: Ensure offline CPU's don't participate in  mce rendezvous process. Borislav Petkov <bp@alien8.de> - 2015-12-07 21:10 +0100

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