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Re: [PATCH] x86/fpu: move FPU state into separate cache

From Linus Torvalds <torvalds@linux-foundation.org>
Newsgroups linux.kernel
Subject Re: [PATCH] x86/fpu: move FPU state into separate cache
Date 2017-03-29 23:50 +0200
Message-ID <tqtDA-4sl-17@gated-at.bofh.it> (permalink)
References <tqsHv-3Oj-9@gated-at.bofh.it> <tqt0S-4cP-13@gated-at.bofh.it> <tqtaz-4hp-39@gated-at.bofh.it> <tqttU-4o9-27@gated-at.bofh.it> <tqttV-4o9-41@gated-at.bofh.it>
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On Wed, Mar 29, 2017 at 2:35 PM, Andy Lutomirski <luto@amacapital.net> wrote:
>
> Randomization also needs to leave thread_info at the beginning.  Can it do that?

Good point, and good question. No idea if the gcc extension can do,
but yes, it clearly needs a "you can't move this entry".

I assume it has some such capability already, because it's fairly
common to have that kind of "beginning of structure if fixed" due to
unions of structures anyway.

                 Linus

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[PATCH] x86/fpu: move FPU state into separate cache Kees Cook <keescook@chromium.org> - 2017-03-29 22:50 +0200
  Re: [PATCH] x86/fpu: move FPU state into separate cache "H. Peter Anvin" <hpa@zytor.com> - 2017-03-29 23:10 +0200
    Re: [PATCH] x86/fpu: move FPU state into separate cache Kees Cook <keescook@chromium.org> - 2017-03-29 23:20 +0200
      Re: [PATCH] x86/fpu: move FPU state into separate cache Dave Hansen <dave.hansen@linux.intel.com> - 2017-03-29 23:20 +0200
      Re: [PATCH] x86/fpu: move FPU state into separate cache Linus Torvalds <torvalds@linux-foundation.org> - 2017-03-29 23:40 +0200
        Re: [PATCH] x86/fpu: move FPU state into separate cache Andy Lutomirski <luto@amacapital.net> - 2017-03-29 23:40 +0200
          Re: [PATCH] x86/fpu: move FPU state into separate cache Linus Torvalds <torvalds@linux-foundation.org> - 2017-03-29 23:50 +0200
            Re: [PATCH] x86/fpu: move FPU state into separate cache hpa@zytor.com - 2017-03-30 00:50 +0200
              Re: [PATCH] x86/fpu: move FPU state into separate cache Linus Torvalds <torvalds@linux-foundation.org> - 2017-03-30 02:00 +0200
                Re: [PATCH] x86/fpu: move FPU state into separate cache Kees Cook <keescook@chromium.org> - 2017-03-30 04:00 +0200
        Re: [PATCH] x86/fpu: move FPU state into separate cache Linus Torvalds <torvalds@linux-foundation.org> - 2017-03-29 23:40 +0200

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