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Re: [PATCH v2] x86/mce: Don't participate in rendezvous process once nmi_shootdown_cpus() was made

From Borislav Petkov <bp@alien8.de>
Newsgroups linux.kernel
Subject Re: [PATCH v2] x86/mce: Don't participate in rendezvous process once nmi_shootdown_cpus() was made
Date 2017-02-20 21:30 +0100
Message-ID <td2KS-VH-19@gated-at.bofh.it> (permalink)
References <tcPkC-X2-3@gated-at.bofh.it> <tcUaB-3XL-9@gated-at.bofh.it> <tcWcq-5cJ-15@gated-at.bofh.it>
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On Mon, Feb 20, 2017 at 09:29:24PM +0800, Xunlei Pang wrote:
> There is a small window between crash and kdump kernel boot, so
> if a SRAO comes within this window it will also cause the mce
> synchronization problem on the crashing cpu if we don't bail out the
> crashing cpu.

You mean, in the window between, kdump kernel starts writing out memory
and the second, kexec-ed kernel?

If so, please add that information to the place in do_machine_check()
where we check crashing_cpu so that we know why we're doing this
temporary ignore of #MC.

Thanks.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

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Thread

[PATCH v2] x86/mce: Don't participate in rendezvous process once nmi_shootdown_cpus() was made Xunlei Pang <xlpang@redhat.com> - 2017-02-20 07:10 +0100
  Re: [PATCH v2] x86/mce: Don't participate in rendezvous process once  nmi_shootdown_cpus() was made Borislav Petkov <bp@alien8.de> - 2017-02-20 12:20 +0100
    Re: [PATCH v2] x86/mce: Don't participate in rendezvous process once  nmi_shootdown_cpus() was made Xunlei Pang <xpang@redhat.com> - 2017-02-20 14:30 +0100
      Re: [PATCH v2] x86/mce: Don't participate in rendezvous process once  nmi_shootdown_cpus() was made Borislav Petkov <bp@alien8.de> - 2017-02-20 21:30 +0100
        Re: [PATCH v2] x86/mce: Don't participate in rendezvous process once  nmi_shootdown_cpus() was made Xunlei Pang <xpang@redhat.com> - 2017-02-21 02:30 +0100
          Re: [PATCH v2] x86/mce: Don't participate in rendezvous process once  nmi_shootdown_cpus() was made Borislav Petkov <bp@alien8.de> - 2017-02-21 09:50 +0100
      Re: [PATCH v2] x86/mce: Don't participate in rendezvous process once  nmi_shootdown_cpus() was made Xunlei Pang <xpang@redhat.com> - 2017-02-21 02:30 +0100
    Re: [PATCH v2] x86/mce: Don't participate in rendezvous process once  nmi_shootdown_cpus() was made Xunlei Pang <xpang@redhat.com> - 2017-02-21 13:40 +0100
      Re: [PATCH v2] x86/mce: Don't participate in rendezvous process once  nmi_shootdown_cpus() was made Borislav Petkov <bp@alien8.de> - 2017-02-21 18:30 +0100

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