From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io0-f196.google.com ([209.85.223.196]:40630 "EHLO mail-io0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758953AbdKOVep (ORCPT ); Wed, 15 Nov 2017 16:34:45 -0500 Received: by mail-io0-f196.google.com with SMTP id 71so3090176ior.7 for ; Wed, 15 Nov 2017 13:34:44 -0800 (PST) From: Sami Tolvanen Subject: [PATCH v2 02/18] kbuild: fix LD_DEAD_CODE_DATA_ELIMINATION with GNU gold Date: Wed, 15 Nov 2017 13:34:12 -0800 Message-Id: <20171115213428.22559-3-samitolvanen@google.com> In-Reply-To: <20171115213428.22559-1-samitolvanen@google.com> References: <20171115213428.22559-1-samitolvanen@google.com> Sender: linux-kbuild-owner@vger.kernel.org List-ID: To: Alex Matveev , Andi Kleen , Ard Biesheuvel , Greg Hackmann , Kees Cook , linux-arm-kernel@lists.infradead.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, Mark Rutland , Masahiro Yamada , Maxim Kuvyrkov , Michal Marek , Nick Desaulniers , Yury Norov , Matthias Kaehlcke Cc: Sami Tolvanen Don't remove .head.text or .exitcall.exit when linking with --gc-sections, and include .init.text.* in .init.text and .init.rodata.* in .init.rodata. Signed-off-by: Sami Tolvanen --- include/asm-generic/vmlinux.lds.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index bdcd1caae092..ce0244780988 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -512,7 +512,7 @@ VMLINUX_SYMBOL(__softirqentry_text_end) = .; /* Section used for early init (in .S files) */ -#define HEAD_TEXT *(.head.text) +#define HEAD_TEXT KEEP(*(.head.text)) #define HEAD_TEXT_SECTION \ .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \ @@ -557,7 +557,7 @@ MEM_DISCARD(init.data) \ KERNEL_CTORS() \ MCOUNT_REC() \ - *(.init.rodata) \ + *(.init.rodata .init.rodata.*) \ FTRACE_EVENTS() \ TRACE_SYSCALLS() \ KPROBE_BLACKLIST() \ @@ -576,7 +576,7 @@ EARLYCON_TABLE() #define INIT_TEXT \ - *(.init.text) \ + *(.init.text .init.text.*) \ *(.text.startup) \ MEM_DISCARD(init.text) @@ -593,7 +593,7 @@ MEM_DISCARD(exit.text) #define EXIT_CALL \ - *(.exitcall.exit) + KEEP(*(.exitcall.exit)) /* * bss (Block Started by Symbol) - uninitialized data -- 2.15.0.448.gf294e3d99a-goog