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Date:   Mon, 29 Jun 2020 09:10:04 -0700
From:   Kees Cook <keescook@chromium.org>
To:     Ard Biesheuvel <ardb@kernel.org>
Cc:     Arvind Sankar <nivedita@alum.mit.edu>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>, X86 ML <x86@kernel.org>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Fangrui Song <maskray@google.com>,
        Dmitry Golovin <dima@golovin.in>,
        clang-built-linux <clang-built-linux@googlegroups.com>,
        Masahiro Yamada <masahiroy@kernel.org>,
        Daniel Kiper <daniel.kiper@oracle.com>,
        Sedat Dilek <sedat.dilek@gmail.com>,
        Nathan Chancellor <natechancellor@gmail.com>,
        Arnd Bergmann <arnd@arndb.de>,
        "H . J . Lu" <hjl@sourceware.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3 1/7] x86/boot/compressed: Move .got.plt entries out of
 the .got section
Message-ID: <202006290909.F79ED275C@keescook>
References: <20200629140928.858507-1-nivedita@alum.mit.edu>
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 <202006290846.5A5C76A4D7@keescook>
 <20200629155011.GA900899@rani.riverdale.lan>
 <CAMj1kXH1Fx3c4fZRVgNPeXnPFbHWVhgywU0Jvu65=wBaR_5yjA@mail.gmail.com>
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On Mon, Jun 29, 2020 at 05:51:00PM +0200, Ard Biesheuvel wrote:
> On Mon, 29 Jun 2020 at 17:50, Arvind Sankar <nivedita@alum.mit.edu> wrote:
> >
> > On Mon, Jun 29, 2020 at 08:48:05AM -0700, Kees Cook wrote:
> > > On Mon, Jun 29, 2020 at 10:09:22AM -0400, Arvind Sankar wrote:
> > >
> > > This is also being done on arm64, and the section was specified slightly
> > > differently (with INFO) which maybe should be done here too?
> >
> > I was actually just about to email you to ask what that INFO is for :)
> > What does it do?
> >
> 
> It makes the section non-allocatable, so it is dropped from the final image

i.e. takes no disk space, but the ASSERT can still be done.

-- 
Kees Cook