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Re: Kernel for Spectre and Meltdown

From Michael Lange <klappnase@freenet.de>
Newsgroups linux.debian.user
Subject Re: Kernel for Spectre and Meltdown
Date 2018-01-29 20:00 +0100
Message-ID <vdmOS-83T-7@gated-at.bofh.it> (permalink)
References <vdm2u-7Ky-25@gated-at.bofh.it> <vdmvw-7VI-39@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Mon, 29 Jan 2018 19:29:19 +0100
"Thomas Schmitt" <scdbackup@gmx.net> wrote:

> Hi,
> 
> Michael Lange wrote:
> > compiler that is "retpoline-aware" (as the
> > "checker"-script calls it, whatever that means)
> 
> The term was coined by Google engineers
> 
>   https://support.google.com/faqs/answer/7625886
>   "The name “retpoline” is a portmanteau of “return” and “trampoline.”
>    It is a trampoline construct constructed using return operations
> which also figuratively ensures that any associated speculative
> execution will “bounce” endlessly.  
> 
>    (If it brings you any amusement: imagine speculative execution as an
>     overly energetic 7-year old that we must now build a warehouse of
>     trampolines around.)"

Thanks, very well explained for technically limited people like me.
And this also explains why they made the common name of their fix sound
so similar to "Ritalin" :)

Regards

Michael


.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

Men will always be men -- no matter where they are.
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Kernel for Spectre and Meltdown Dextin Jerafmel <jerafmel@yahoo.com> - 2018-01-29 09:10 +0100
  Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-01-29 10:00 +0100
    Re: Kernel for Spectre and Meltdown arne <sp113438@telfort.nl> - 2018-01-29 10:50 +0100
      Re: Kernel for Spectre and Meltdown Michael Lange <klappnase@freenet.de> - 2018-01-29 11:50 +0100
        Re: Kernel for Spectre and Meltdown arne <sp113438@telfort.nl> - 2018-01-29 13:30 +0100
    Re: Kernel for Spectre and Meltdown Jonathan Dowland <jmtd@debian.org> - 2018-01-29 10:50 +0100
    Re: Kernel for Spectre and Meltdown deloptes <deloptes@gmail.com> - 2018-01-29 11:20 +0100
      Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-01-29 12:40 +0100
        Re: Kernel for Spectre and Meltdown rhkramer@gmail.com - 2018-01-29 14:30 +0100
          Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-01-29 14:50 +0100
        Re: Kernel for Spectre and Meltdown deloptes <deloptes@gmail.com> - 2018-01-29 14:30 +0100
          Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-01-29 15:00 +0100
            Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-01-29 15:30 +0100
              Re: Kernel for Spectre and Meltdown rhkramer@gmail.com - 2018-01-29 16:50 +0100
                Re: Kernel for Spectre and Meltdown Greg Wooledge <wooledg@eeg.ccf.org> - 2018-01-29 17:20 +0100
                Re: Kernel for Spectre and Meltdown deloptes <deloptes@gmail.com> - 2018-01-29 18:40 +0100
                Re: Kernel for Spectre and Meltdown Michael Lange <klappnase@freenet.de> - 2018-01-29 19:10 +0100
                Re: Kernel for Spectre and Meltdown "Thomas Schmitt" <scdbackup@gmx.net> - 2018-01-29 19:40 +0100
                Re: Kernel for Spectre and Meltdown Michael Lange <klappnase@freenet.de> - 2018-01-29 20:00 +0100
                Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-01-30 20:40 +0100
                Re: Kernel for Spectre and Meltdown Michael Lange <klappnase@freenet.de> - 2018-01-30 22:50 +0100
                Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-01-30 23:10 +0100
                Re: Kernel for Spectre and Meltdown Elimar Riesebieter <riesebie@lxtec.de> - 2018-01-30 16:30 +0100
                Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-01-30 17:20 +0100
                Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-01-30 18:00 +0100
                Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-01-31 14:50 +0100
          Re: Kernel for Spectre and Meltdown Carl Fink <carl@finknetwork.com> - 2018-01-29 15:50 +0100
            Re: Kernel for Spectre and Meltdown deloptes <deloptes@gmail.com> - 2018-01-29 18:40 +0100
    Re: Kernel for Spectre and Meltdown Michael Lange <klappnase@freenet.de> - 2018-01-29 11:30 +0100
      Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-01-29 13:40 +0100
        Re: Kernel for Spectre and Meltdown Michael Stone <mstone@debian.org> - 2018-01-29 14:00 +0100
      Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-01-29 14:10 +0100
        Re: Kernel for Spectre and Meltdown Michael Lange <klappnase@freenet.de> - 2018-01-29 19:20 +0100
          Re: Kernel for Spectre and Meltdown deloptes <deloptes@gmail.com> - 2018-01-29 19:40 +0100
            Re: Kernel for Spectre and Meltdown Michael Lange <klappnase@freenet.de> - 2018-01-29 20:00 +0100
        Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-01-30 10:50 +0100
          Re: Kernel for Spectre and Meltdown Michael Lange <klappnase@freenet.de> - 2018-01-30 12:20 +0100
            Re: Kernel for Spectre and Meltdown Greg Wooledge <wooledg@eeg.ccf.org> - 2018-01-30 14:30 +0100
              Re: Kernel for Spectre and Meltdown Gene Heskett <gheskett@shentel.net> - 2018-01-30 14:50 +0100
              Re: Kernel for Spectre and Meltdown "tv.debian@googlemail.com" <tv.debian@googlemail.com> - 2018-01-30 16:40 +0100
              Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-01-31 19:20 +0100
                Re: Kernel for Spectre and Meltdown Greg Wooledge <wooledg@eeg.ccf.org> - 2018-01-31 19:30 +0100
                Re: Kernel for Spectre and Meltdown Michael Lange <klappnase@freenet.de> - 2018-01-31 19:40 +0100
                Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-01-31 23:40 +0100
                Re: Kernel for Spectre and Meltdown Richard Hector <richard@walnut.gen.nz> - 2018-01-31 23:50 +0100
                Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-01 00:10 +0100
                Re: Kernel for Spectre and Meltdown Richard Hector <richard@walnut.gen.nz> - 2018-02-01 00:20 +0100
                Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-01 00:50 +0100
              Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-01 13:10 +0100
                Re: Kernel for Spectre and Meltdown Andy Smith <andy@strugglers.net> - 2018-02-02 05:40 +0100
                Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-03 09:10 +0100
                Re: Kernel for Spectre and Meltdown rhkramer@gmail.com - 2018-02-03 15:50 +0100
                Re: Kernel for Spectre and Meltdown Cindy-Sue Causey <butterflybytes@gmail.com> - 2018-02-03 16:40 +0100
                Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-03 18:10 +0100
                Re: Kernel for Spectre and Meltdown David Wright <deblis@lionunicorn.co.uk> - 2018-02-03 18:30 +0100
                Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-03 23:50 +0100
                Re: Kernel for Spectre and Meltdown David Wright <deblis@lionunicorn.co.uk> - 2018-02-03 18:20 +0100
                Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-03 23:10 +0100
                Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-03 23:10 +0100
                Re: Kernel for Spectre and Meltdown Andy Smith <andy@strugglers.net> - 2018-02-04 00:20 +0100
                Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-04 01:10 +0100
                Re: Kernel for Spectre and Meltdown Andy Smith <andy@strugglers.net> - 2018-02-04 16:30 +0100
                Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-05 00:10 +0100
                Re: Kernel for Spectre and Meltdown Michael Fothergill <michael.fothergill@gmail.com> - 2018-02-05 00:10 +0100
                Re: Kernel for Spectre and Meltdown rhkramer@gmail.com - 2018-02-04 05:30 +0100
    comment and new question--when do upgrades take effect  (was: Re: Kernel for Spectre and Meltdown) rhkramer@gmail.com - 2018-01-29 14:20 +0100
      Re: comment and new question--when do upgrades take effect  (was:  Re: Kernel for Spectre and Meltdown) Roberto C. Sánchez <roberto@debian.org> - 2018-01-29 14:50 +0100
      Re: comment and new question--when do upgrades take effect  (was:  Re: Kernel for Spectre and Meltdown) Joe <joe@jretrading.com> - 2018-01-29 14:50 +0100
        Re: comment and new question--when do upgrades take effect (was: Re:  Kernel for Spectre and Meltdown) Boyan Penkov <boyan.penkov@gmail.com> - 2018-01-29 15:40 +0100
          Re: comment and new question--when do upgrades take effect Richard Hector <richard@walnut.gen.nz> - 2018-01-30 00:20 +0100
            Re: comment and new question--when do upgrades take effect Boyan Penkov <boyan.penkov@gmail.com> - 2018-01-30 01:00 +0100
        Re: comment and new question--when do upgrades take effect  (was:  Re: Kernel for Spectre and Meltdown) David Wright <deblis@lionunicorn.co.uk> - 2018-01-29 17:20 +0100
      Re: comment and new question--when do upgrades take effect  (was:  Re: Kernel for Spectre and Meltdown) Andy Smith <andy@strugglers.net> - 2018-01-29 15:20 +0100
        Re: comment and new question--when do upgrades take effect Richard Owlett <rowlett@cloud85.net> - 2018-01-29 15:40 +0100
          Re: comment and new question--when do upgrades take effect Roberto C. Sánchez <roberto@debian.org> - 2018-01-29 15:40 +0100
            Re: comment and new question--when do upgrades take effect <tomas@tuxteam.de> - 2018-01-29 16:00 +0100
              Re: comment and new question--when do upgrades take effect Richard Owlett <rowlett@cloud85.net> - 2018-01-29 16:20 +0100
                Re: comment and new question--when do upgrades take effect David Wright <deblis@lionunicorn.co.uk> - 2018-01-29 16:50 +0100
        Re: comment and new question--when do upgrades take effect (side  question) Neo <neo@spacerat.ch> - 2018-01-29 17:10 +0100
      Re: comment and new question--when do upgrades take effect  (was:  Re: Kernel for Spectre and Meltdown) Michael Lange <klappnase@freenet.de> - 2018-01-29 19:20 +0100
  Re: Kernel for Spectre and Meltdown Bastien Durel <bastien@durel.org> - 2018-01-29 10:50 +0100

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