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From: Masahiro Yamada <masahiroy@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: "David S . Miller" <davem@davemloft.net>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Kees Cook <keescook@chromium.org>,
	clang-built-linux@googlegroups.com,
	Herbert Xu <herbert@gondor.apana.org.au>,
	linux-crypto@vger.kernel.org, Ingo Molnar <mingo@redhat.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Borislav Petkov <bp@alien8.de>,
	Peter Zijlstra <peterz@infradead.org>,
	"H . Peter Anvin" <hpa@zytor.com>,
	x86@kernel.org, linux-kbuild@vger.kernel.org,
	Borislav Petkov <bp@suse.de>,
	Masahiro Yamada <masahiroy@kernel.org>,
	Jonathan Corbet <corbet@lwn.net>,
	linux-doc@vger.kernel.org
Subject: [PATCH 14/16] Documentation/changes: Raise minimum supported binutils version to 2.23
Date: Tue, 24 Mar 2020 17:48:19 +0900	[thread overview]
Message-ID: <20200324084821.29944-15-masahiroy@kernel.org> (raw)
In-Reply-To: <20200324084821.29944-1-masahiroy@kernel.org>

From: Borislav Petkov <bp@suse.de>

The currently minimum-supported binutils version 2.21 has the problem of
promoting symbols which are defined outside of a section into absolute.
According to Arvind:

  binutils-2.21 and -2.22. An x86-64 defconfig will fail with
          Invalid absolute R_X86_64_32S relocation: _etext
  and after fixing that one, with
          Invalid absolute R_X86_64_32S relocation: __end_of_kernel_reserve

Those two versions of binutils have a bug when it comes to handling
symbols defined outside of a section and binutils 2.23 has the proper
fix, see: https://sourceware.org/legacy-ml/binutils/2012-06/msg00155.html

Therefore, up to the fixed version directly, skipping the broken ones.

Currently shipping distros already have the fixed binutils version so
there should be no breakage resulting from this.

For more details about the whole thing, see the thread in Link.

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200110202349.1881840-1-nivedita@alum.mit.edu
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Jason A. Donenfeld <Jason@zx2c4.com>
Acked-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 Documentation/process/changes.rst | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/process/changes.rst b/Documentation/process/changes.rst
index e47863575917..91c5ff8e161e 100644
--- a/Documentation/process/changes.rst
+++ b/Documentation/process/changes.rst
@@ -31,7 +31,7 @@ you probably needn't concern yourself with pcmciautils.
 ====================== ===============  ========================================
 GNU C                  4.6              gcc --version
 GNU make               3.81             make --version
-binutils               2.21             ld -v
+binutils               2.23             ld -v
 flex                   2.5.35           flex --version
 bison                  2.0              bison --version
 util-linux             2.10o            fdformat --version
@@ -76,7 +76,7 @@ You will need GNU make 3.81 or later to build the kernel.
 Binutils
 --------
 
-Binutils 2.21 or newer is needed to build the kernel.
+Binutils 2.23 or newer is needed to build the kernel.
 
 pkg-config
 ----------
-- 
2.17.1


  parent reply	other threads:[~2020-03-24  8:51 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-24  8:48 [PATCH 00/16] x86, crypto: remove always-defined CONFIG_AS_* and cosolidate Kconfig/Makefiles Masahiro Yamada
2020-03-24  8:48 ` [Intel-gfx] " Masahiro Yamada
2020-03-24  8:48 ` Masahiro Yamada
2020-03-24  8:48 ` [PATCH 01/16] lib/raid6/test: fix build on distros whose /bin/sh is not bash Masahiro Yamada
2020-03-24 16:36   ` Nick Desaulniers
2020-03-24 16:36     ` Nick Desaulniers
2020-03-26  6:48     ` Masahiro Yamada
2020-03-26  6:48       ` Masahiro Yamada
2020-03-26 17:27       ` Nick Desaulniers
2020-03-26 17:27         ` Nick Desaulniers
2020-03-24  8:48 ` [PATCH 02/16] x86: remove unneeded defined(__ASSEMBLY__) check from asm/dwarf2.h Masahiro Yamada
2020-03-24 16:43   ` Nick Desaulniers
2020-03-24 16:43     ` Nick Desaulniers
2020-03-24  8:48 ` [PATCH 03/16] x86: remove always-defined CONFIG_AS_CFI Masahiro Yamada
2020-03-24  8:48 ` [PATCH 04/16] x86: remove unneeded (CONFIG_AS_)CFI_SIGNAL_FRAME Masahiro Yamada
2020-03-24 16:41   ` Nick Desaulniers
2020-03-24 16:41     ` Nick Desaulniers
2020-03-24  8:48 ` [PATCH 05/16] x86: remove always-defined CONFIG_AS_CFI_SECTIONS Masahiro Yamada
2020-03-24  8:48 ` [PATCH 06/16] x86: remove always-defined CONFIG_AS_SSSE3 Masahiro Yamada
2020-03-24 16:56   ` Nick Desaulniers
2020-03-24 16:56     ` Nick Desaulniers
2020-03-24  8:48 ` [PATCH 07/16] x86: remove always-defined CONFIG_AS_AVX Masahiro Yamada
2020-03-24  8:48 ` [PATCH 08/16] x86: add comments about the binutils version to support code in as-instr Masahiro Yamada
2020-03-24  8:48 ` [PATCH 09/16] x86: replace arch macros from compiler with CONFIG_X86_{32,64} Masahiro Yamada
2020-03-24  8:48 ` [PATCH 10/16] drm/i915: remove always-defined CONFIG_AS_MOVNTDQA Masahiro Yamada
2020-03-24  8:48   ` [Intel-gfx] " Masahiro Yamada
2020-03-24  8:48   ` Masahiro Yamada
2020-03-24  8:48 ` [PATCH 11/16] x86: probe assembler capabilities via kconfig instead of makefile Masahiro Yamada
2020-03-24 17:01   ` Nick Desaulniers
2020-03-24 17:01     ` Nick Desaulniers
2020-03-24 17:17     ` Jason A. Donenfeld
2020-03-24 17:17       ` Jason A. Donenfeld
2020-03-24 17:21       ` Masahiro Yamada
2020-03-24 17:21         ` Masahiro Yamada
2020-03-24 17:33       ` Nick Desaulniers
2020-03-24 17:33         ` Nick Desaulniers
2020-03-24  8:48 ` [PATCH 12/16] crypto: x86 - rework configuration based on Kconfig Masahiro Yamada
2020-03-24 11:54   ` Herbert Xu
2020-03-24  8:48 ` [PATCH 13/16] crypto: curve25519 - do not pollute dispatcher based on assembler Masahiro Yamada
2020-03-24 11:54   ` Herbert Xu
2020-03-24  8:48 ` Masahiro Yamada [this message]
2020-03-24  8:48 ` [PATCH 15/16] x86: update AS_* macros to binutils >=2.23, supporting ADX and AVX2 Masahiro Yamada
2020-03-24  8:48 ` [PATCH 16/16] crypto: x86 - clean up poly1305-x86_64-cryptogams.S by 'make clean' Masahiro Yamada
2020-03-24 11:55   ` Herbert Xu
2020-03-24 16:51 ` [PATCH 00/16] x86, crypto: remove always-defined CONFIG_AS_* and cosolidate Kconfig/Makefiles Linus Torvalds
2020-03-24 16:51   ` [Intel-gfx] " Linus Torvalds
2020-03-24 16:51   ` Linus Torvalds
2020-03-25  4:59 ` Ingo Molnar
2020-03-25  4:59   ` [Intel-gfx] " Ingo Molnar
2020-03-25  4:59   ` Ingo Molnar
2020-03-25  5:09   ` Masahiro Yamada
2020-03-25  5:09     ` [Intel-gfx] " Masahiro Yamada
2020-03-25  5:09     ` Masahiro Yamada
2020-03-26  9:20     ` Ingo Molnar
2020-03-26  9:20       ` [Intel-gfx] " Ingo Molnar
2020-03-26  9:20       ` Ingo Molnar

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