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Date:   Wed, 6 Oct 2021 09:17:52 -0700
From:   Sami Tolvanen <>
To:     Josh Poimboeuf <>
Cc:     X86 ML <>, Kees Cook <>,
        Peter Zijlstra <>,
        Nathan Chancellor <>,
        Nick Desaulniers <>,
        Sedat Dilek <>,,
        LKML <>,
Subject: Re: [PATCH v4 11/15] x86, relocs: Ignore __typeid__ relocations

On Tue, Oct 5, 2021 at 8:31 PM Josh Poimboeuf <> wrote:
> On Thu, Sep 30, 2021 at 11:05:27AM -0700, Sami Tolvanen wrote:
> > From: Kees Cook <>
> >
> > The __typeid__* symbols aren't actually relocations, so they can be
> > ignored during relocation generation.
> Then what are they?  It would be good to add that information here.

These relocations are for compiler-generated constants that it uses
for indirect call type checking. I think we can clarify this in the
next version.


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