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Re: [x86-tip] strange nr_cpus= boot regression

From Thomas Gleixner <tglx@linutronix.de>
Newsgroups linux.kernel
Subject Re: [x86-tip] strange nr_cpus= boot regression
Date 2016-09-26 20:00 +0200
Message-ID <slIm5-6Ps-11@gated-at.bofh.it> (permalink)
References <slDcJ-3Ml-9@gated-at.bofh.it> <slI2J-6Jd-23@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Mike,

On Mon, 26 Sep 2016, Thomas Gleixner wrote:
> On Mon, 26 Sep 2016, Mike Galbraith wrote:
> 
> > I've encountered a strange regression in tip, symptom is that if you
> > boot with nr_cpus=nr_you_have, what actually boots is nr_you_have/2. 
> >  Do not pass nr_cpus=, and all is well. 
> 
> What's the number of possible cpus in your system?

Can you please provide your .config and the dmesg of a bad and a good run?
  
Thanks,

	tglx

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Thread

[x86-tip] strange nr_cpus= boot regression Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-09-26 14:30 +0200
  Re: [x86-tip] strange nr_cpus= boot regression Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-09-26 14:50 +0200
    Re: [x86-tip] strange nr_cpus= boot regression Borislav Petkov <bp@alien8.de> - 2016-09-26 15:50 +0200
      Re: [x86-tip] strange nr_cpus= boot regression Borislav Petkov <bp@alien8.de> - 2016-09-26 16:20 +0200
      Re: [x86-tip] strange nr_cpus= boot regression Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-09-26 16:30 +0200
  Re: [x86-tip] strange nr_cpus= boot regression Thomas Gleixner <tglx@linutronix.de> - 2016-09-26 19:40 +0200
    Re: [x86-tip] strange nr_cpus= boot regression Thomas Gleixner <tglx@linutronix.de> - 2016-09-26 20:00 +0200
      Re: [x86-tip] strange nr_cpus= boot regression Thomas Gleixner <tglx@linutronix.de> - 2016-09-26 21:40 +0200
        Re: [x86-tip] strange nr_cpus= boot regression Thomas Gleixner <tglx@linutronix.de> - 2016-09-26 22:00 +0200
        Re: [x86-tip] strange nr_cpus= boot regression Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-09-27 05:20 +0200
          Re: [x86-tip] strange nr_cpus= boot regression Borislav Petkov <bp@alien8.de> - 2016-09-27 06:20 +0200
    Re: [x86-tip] strange nr_cpus= boot regression Dou Liyang <douly.fnst@cn.fujitsu.com> - 2016-09-27 04:10 +0200
      Re: [x86-tip] strange nr_cpus= boot regression Thomas Gleixner <tglx@linutronix.de> - 2016-09-27 14:20 +0200

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