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Re: [PATCH] turbostat: Running on virtual machine is not supported

From Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Newsgroups linux.kernel
Subject Re: [PATCH] turbostat: Running on virtual machine is not supported
Date 2017-07-25 18:00 +0200
Message-ID <u7apB-4Hw-41@gated-at.bofh.it> (permalink)
References <u77Bo-2Vd-25@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Tue, 25 Jul 2017, Prarit Bhargava wrote:
> A common way of determining if the system is a virtual machine is to
> search /proc/cpuinfo flags entry for "hypervisor".  turbostat must output
> a proper error message when found.

Maybe you could output that message only if it fails to both use
/dev/msr and perf *and* it is under a virtual machine?  That would have
better forward compatibility, maybe someday /dev/msr or perf will work
inside a VM for what turbostat needs...

-- 
  Henrique Holschuh

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Thread

[PATCH] turbostat: Running on virtual machine is not supported Prarit Bhargava <prarit@redhat.com> - 2017-07-25 15:00 +0200
  Re: [PATCH] turbostat: Running on virtual machine is not supported Henrique de Moraes Holschuh <hmh@hmh.eng.br> - 2017-07-25 18:00 +0200
    Re: [PATCH] turbostat: Running on virtual machine is not supported Len Brown <lenb@kernel.org> - 2017-07-27 05:10 +0200
      Re: [PATCH] turbostat: Running on virtual machine is not supported Prarit Bhargava <prarit@redhat.com> - 2017-07-27 13:50 +0200
      Re: [PATCH] turbostat: Running on virtual machine is not supported Prarit Bhargava <prarit@redhat.com> - 2017-07-28 14:00 +0200

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