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Re: [PATCH] [RFC] x86: work around MPX Erratum

From Borislav Petkov <bp@alien8.de>
Newsgroups linux.kernel
Subject Re: [PATCH] [RFC] x86: work around MPX Erratum
Date 2016-05-03 23:50 +0200
Message-ID <ruQmC-7An-17@gated-at.bofh.it> (permalink)
References <ruucp-3Fl-1@gated-at.bofh.it> <ruCjE-309-13@gated-at.bofh.it> <ruPJU-7cw-19@gated-at.bofh.it> <ruPTz-7jM-1@gated-at.bofh.it> <ruQ3f-7p9-3@gated-at.bofh.it>
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On Tue, May 03, 2016 at 02:28:18PM -0700, Dave Hansen wrote:
> Generally, I'm not sure we need the no$foo options at all.  There's
> always "clearcpuid=" which does the same thing.  It just requires you to
> go look up the X86_FEATURE_* bit first.

Yeah, the "no-" things are all chicken bits which we should get rid of
at some point anyway.

> What do you mean by disable? Have qemu error out if MPX and SMEP
> aren't disabled in concert with each other?

Yap.

-- 
Regards/Gruss,
    Boris.

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

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Thread

[PATCH] [RFC] x86: work around MPX Erratum Dave Hansen <dave@sr71.net> - 2016-05-03 00:10 +0200
  Re: [PATCH] [RFC] x86: work around MPX Erratum Ingo Molnar <mingo@kernel.org> - 2016-05-03 08:50 +0200
    Re: [PATCH] [RFC] x86: work around MPX Erratum Dave Hansen <dave.hansen@intel.com> - 2016-05-03 23:10 +0200
      Re: [PATCH] [RFC] x86: work around MPX Erratum Borislav Petkov <bp@alien8.de> - 2016-05-03 23:20 +0200
        Re: [PATCH] [RFC] x86: work around MPX Erratum Dave Hansen <dave.hansen@intel.com> - 2016-05-03 23:30 +0200
          Re: [PATCH] [RFC] x86: work around MPX Erratum Linus Torvalds <torvalds@linux-foundation.org> - 2016-05-03 23:40 +0200
          Re: [PATCH] [RFC] x86: work around MPX Erratum Borislav Petkov <bp@alien8.de> - 2016-05-03 23:50 +0200
      Re: [PATCH] [RFC] x86: work around MPX Erratum Linus Torvalds <torvalds@linux-foundation.org> - 2016-05-03 23:40 +0200
        Re: [PATCH] [RFC] x86: work around MPX Erratum Andy Lutomirski <luto@amacapital.net> - 2016-05-03 23:50 +0200
      Re: [PATCH] [RFC] x86: work around MPX Erratum Andy Lutomirski <luto@amacapital.net> - 2016-05-03 23:40 +0200
        Re: [PATCH] [RFC] x86: work around MPX Erratum Dave Hansen <dave.hansen@intel.com> - 2016-05-03 23:50 +0200
          Re: [PATCH] [RFC] x86: work around MPX Erratum Andy Lutomirski <luto@amacapital.net> - 2016-05-04 00:00 +0200
            Re: [PATCH] [RFC] x86: work around MPX Erratum Ingo Molnar <mingo@kernel.org> - 2016-05-04 08:50 +0200
              Re: [PATCH] [RFC] x86: work around MPX Erratum Andy Lutomirski <luto@amacapital.net> - 2016-05-05 19:20 +0200
                Re: [PATCH] [RFC] x86: work around MPX Erratum Ingo Molnar <mingo@kernel.org> - 2016-05-05 20:50 +0200
                Re: [PATCH] [RFC] x86: work around MPX Erratum Andy Lutomirski <luto@amacapital.net> - 2016-05-06 21:10 +0200

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