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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
Date: Mon, 29 Jun 2020 09:10:04 -0700	[thread overview]
Message-ID: <202006290909.F79ED275C@keescook> (raw)
In-Reply-To: <CAMj1kXH1Fx3c4fZRVgNPeXnPFbHWVhgywU0Jvu65=wBaR_5yjA@mail.gmail.com>

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

  reply	other threads:[~2020-06-29 21:44 UTC|newest]

Thread overview: 113+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-29 14:09 [PATCH v3 0/7] x86/boot: Remove runtime relocations from compressed kernel Arvind Sankar
2020-06-29 14:09 ` [PATCH v3 1/7] x86/boot/compressed: Move .got.plt entries out of the .got section Arvind Sankar
2020-06-29 15:48   ` Kees Cook
2020-06-29 15:50     ` Arvind Sankar
2020-06-29 15:51       ` Ard Biesheuvel
2020-06-29 16:10         ` Kees Cook [this message]
2020-06-29 14:09 ` [PATCH v3 2/7] x86/boot/compressed: Force hidden visibility for all symbol references Arvind Sankar
2020-06-29 15:50   ` Kees Cook
2020-07-14  9:20   ` Sedat Dilek
2020-07-14  9:47     ` Ard Biesheuvel
2020-06-29 14:09 ` [PATCH v3 3/7] x86/boot/compressed: Get rid of GOT fixup code Arvind Sankar
2020-06-29 15:53   ` Kees Cook
2020-06-29 14:09 ` [PATCH v3 4/7] x86/boot: Add .text.* to setup.ld Arvind Sankar
2020-06-29 15:55   ` Kees Cook
2020-06-29 14:09 ` [PATCH v3 5/7] x86/boot: Remove run-time relocations from .head.text code Arvind Sankar
2020-06-29 16:04   ` Kees Cook
2020-06-29 17:01     ` Arvind Sankar
2020-07-14 13:20   ` Sedat Dilek
2020-06-29 14:09 ` [PATCH v3 6/7] x86/boot: Remove runtime relocations from head_{32,64}.S Arvind Sankar
2020-06-29 16:06   ` Kees Cook
2020-06-29 16:52     ` Arvind Sankar
2020-06-29 14:09 ` [PATCH v3 7/7] x86/boot: Check that there are no runtime relocations Arvind Sankar
2020-06-29 16:09   ` Kees Cook
2020-06-29 16:11     ` Ard Biesheuvel
2020-06-29 16:20       ` Kees Cook
2020-06-29 16:56         ` Arvind Sankar
2020-06-29 17:37           ` Fangrui Song
2020-06-29 18:11             ` Ard Biesheuvel
2020-06-29 23:34               ` Fangrui Song
2020-06-30 16:26                 ` Ard Biesheuvel
2020-06-30 17:54                   ` Arvind Sankar
2020-06-30 22:00                     ` Fangrui Song
2020-06-30 23:27                       ` Arvind Sankar
2020-07-01  6:44                         ` Ard Biesheuvel
2020-07-01 14:42                           ` Arvind Sankar
2020-06-29 18:43         ` Arvind Sankar
2020-07-14  2:38 ` [PATCH v4 0/7] x86/boot: Remove runtime relocations from compressed kernel Arvind Sankar
2020-07-14 13:15   ` Sedat Dilek
2020-07-14 14:15     ` Arvind Sankar
2020-07-14 18:13       ` Sedat Dilek
2020-07-14 18:30         ` Sedat Dilek
2020-07-14 18:33           ` Sedat Dilek
2020-07-14 19:21             ` Sedat Dilek
2020-07-14 19:29           ` Arvind Sankar
2020-07-14 19:53             ` Sedat Dilek
2020-07-14 20:07               ` Arvind Sankar
2020-07-14 20:10                 ` Sedat Dilek
2020-07-14 20:14                   ` Arvind Sankar
2020-07-14 20:17                     ` Sedat Dilek
2020-07-14 20:08               ` Sedat Dilek
2020-07-14 20:21                 ` Arvind Sankar
2020-07-14 20:24                   ` Sedat Dilek
2020-07-14 20:27                     ` Sedat Dilek
2020-07-14 20:35                       ` Arvind Sankar
2020-07-14 20:43                         ` Sedat Dilek
2020-07-14 21:07                           ` Arvind Sankar
2020-07-14 20:33                     ` Arvind Sankar
2020-07-15  0:41   ` [PATCH v5 0/7] x86/boot: Remove run-time " Arvind Sankar
2020-07-15  1:46     ` Sedat Dilek
2020-07-15  7:11       ` Sedat Dilek
2020-07-17 13:46     ` Arvind Sankar
2020-07-17 18:16       ` Nick Desaulniers
2020-07-17 18:21         ` Sedat Dilek
2020-07-17 20:17         ` [PATCH-next " Arvind Sankar
2020-07-17 23:46           ` Nick Desaulniers
2020-07-29 22:04           ` Kees Cook
2020-07-29 22:23             ` Arvind Sankar
2020-07-30  2:38               ` Kees Cook
2020-07-17 20:17         ` [PATCH-next v5 1/7] x86/boot/compressed: Move .got.plt entries out of the .got section Arvind Sankar
2020-07-17 20:17         ` [PATCH-next v5 2/7] x86/boot/compressed: Force hidden visibility for all symbol references Arvind Sankar
2020-07-17 20:17         ` [PATCH-next v5 3/7] x86/boot/compressed: Get rid of GOT fixup code Arvind Sankar
2020-07-17 20:17         ` [PATCH-next v5 4/7] x86/boot: Add .text.* to setup.ld Arvind Sankar
2020-07-17 20:17         ` [PATCH-next v5 5/7] x86/boot: Remove run-time relocations from .head.text code Arvind Sankar
2020-07-17 20:18         ` [PATCH-next v5 6/7] x86/boot: Remove run-time relocations from head_{32,64}.S Arvind Sankar
2020-07-17 20:18         ` [PATCH-next v5 7/7] x86/boot: Check that there are no run-time relocations Arvind Sankar
2020-07-18  5:44         ` [PATCH v5 0/7] x86/boot: Remove run-time relocations from compressed kernel Ard Biesheuvel
2020-07-18  7:01           ` Sedat Dilek
2020-07-24 23:25           ` Kees Cook
2020-07-31 14:53             ` Arvind Sankar
2020-07-31 14:58               ` Sedat Dilek
2020-07-31 20:27                 ` [PATCH v6 " Arvind Sankar
2020-07-31 20:27                   ` [PATCH v6 1/7] x86/boot/compressed: Move .got.plt entries out of the .got section Arvind Sankar
2020-07-31 20:27                   ` [PATCH v6 2/7] x86/boot/compressed: Force hidden visibility for all symbol references Arvind Sankar
2020-07-31 20:27                   ` [PATCH v6 3/7] x86/boot/compressed: Get rid of GOT fixup code Arvind Sankar
2020-07-31 20:27                   ` [PATCH v6 4/7] x86/boot: Add .text.* to setup.ld Arvind Sankar
2020-07-31 20:27                   ` [PATCH v6 5/7] x86/boot: Remove run-time relocations from .head.text code Arvind Sankar
2020-07-31 20:27                   ` [PATCH v6 6/7] x86/boot: Remove run-time relocations from head_{32,64}.S Arvind Sankar
2020-07-31 20:27                   ` [PATCH v6 7/7] x86/boot: Check that there are no run-time relocations Arvind Sankar
2020-07-31 23:15                   ` [PATCH v6 0/7] x86/boot: Remove run-time relocations from compressed kernel Kees Cook
2020-07-15  0:41   ` [PATCH v5 1/7] x86/boot/compressed: Move .got.plt entries out of the .got section Arvind Sankar
2020-07-15  8:52     ` Sedat Dilek
2020-07-15  0:41   ` [PATCH v5 2/7] x86/boot/compressed: Force hidden visibility for all symbol references Arvind Sankar
2020-07-15  8:54     ` Sedat Dilek
2020-07-15  0:41   ` [PATCH v5 3/7] x86/boot/compressed: Get rid of GOT fixup code Arvind Sankar
2020-07-15  8:54     ` Sedat Dilek
2020-07-15  0:41   ` [PATCH v5 4/7] x86/boot: Add .text.* to setup.ld Arvind Sankar
2020-07-15  8:55     ` Sedat Dilek
2020-07-15  0:41   ` [PATCH v5 5/7] x86/boot: Remove run-time relocations from .head.text code Arvind Sankar
2020-07-15  8:56     ` Sedat Dilek
2020-07-15  0:41   ` [PATCH v5 6/7] x86/boot: Remove run-time relocations from head_{32,64}.S Arvind Sankar
2020-07-15  8:58     ` Sedat Dilek
2020-07-15  9:03       ` Ard Biesheuvel
2020-07-15  9:10         ` Sedat Dilek
2020-07-15  0:41   ` [PATCH v5 7/7] x86/boot: Check that there are no run-time relocations Arvind Sankar
2020-07-15  9:00     ` Sedat Dilek
2020-07-15  9:12       ` Sedat Dilek
2020-07-14  2:38 ` [PATCH v4 1/7] x86/boot/compressed: Move .got.plt entries out of the .got section Arvind Sankar
2020-07-14  2:38 ` [PATCH v4 2/7] x86/boot/compressed: Force hidden visibility for all symbol references Arvind Sankar
2020-07-14  2:38 ` [PATCH v4 3/7] x86/boot/compressed: Get rid of GOT fixup code Arvind Sankar
2020-07-14  2:38 ` [PATCH v4 4/7] x86/boot: Add .text.* to setup.ld Arvind Sankar
2020-07-14  2:38 ` [PATCH v4 5/7] x86/boot: Remove run-time relocations from .head.text code Arvind Sankar
2020-07-14  2:38 ` [PATCH v4 6/7] x86/boot: Remove runtime relocations from head_{32,64}.S Arvind Sankar
2020-07-14  2:38 ` [PATCH v4 7/7] x86/boot: Check that there are no runtime relocations Arvind Sankar

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