[v6,15/29] arm/build: Refactor linker script headers

Message ID	20200821194310.3089815-16-keescook@chromium.org
State	Accepted
Commit	d7e3b065dc98e95f2dae6d2da031dd4c243bd7be
Headers	show Return-Path: <SRS0=vbuA=B7=vger.kernel.org=linux-efi-owner@kernel.org> From: Kees Cook <keescook@chromium.org> To: Ingo Molnar <mingo@kernel.org> Cc: Kees Cook <keescook@chromium.org>, Catalin Marinas <catalin.marinas@arm.com>, Mark Rutland <mark.rutland@arm.com>, Ard Biesheuvel <ardb@kernel.org>, Peter Collingbourne <pcc@google.com>, James Morse <james.morse@arm.com>, Borislav Petkov <bp@suse.de>, Ingo Molnar <mingo@redhat.com>, Russell King <linux@armlinux.org.uk>, Masahiro Yamada <masahiroy@kernel.org>, Arvind Sankar <nivedita@alum.mit.edu>, Nick Desaulniers <ndesaulniers@google.com>, Nathan Chancellor <natechancellor@gmail.com>, Arnd Bergmann <arnd@arndb.de>, x86@kernel.org, clang-built-linux@googlegroups.com, linux-arch@vger.kernel.org, linux-efi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v6 15/29] arm/build: Refactor linker script headers Date: Fri, 21 Aug 2020 12:42:56 -0700 Message-Id: <20200821194310.3089815-16-keescook@chromium.org> In-Reply-To: <20200821194310.3089815-1-keescook@chromium.org> References: <20200821194310.3089815-1-keescook@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-efi-owner@vger.kernel.org Precedence: bulk
Series	Warn on orphan section placement \| expand [v6,00/29] Warn on orphan section placement [v6,01/29] vmlinux.lds.h: Create COMMON_DISCARDS [v6,03/29] vmlinux.lds.h: Avoid KASAN and KCSAN's unwanted sections [v6,08/29] arm64/mm: Remove needless section quotes [v6,09/29] arm64/kernel: Remove needless Call Frame Information annotations [v6,12/29] arm64/build: Add missing DWARF sections [v6,14/29] arm64/build: Warn on orphan section placement [v6,15/29] arm/build: Refactor linker script headers [v6,16/29] arm/build: Explicitly keep .ARM.attributes sections [v6,17/29] arm/build: Add missing sections [v6,21/29] arm/boot: Warn on orphan section placement [v6,22/29] x86/asm: Avoid generating unused kprobe sections [v6,24/29] x86/build: Assert for unwanted sections [v6,28/29] x86/boot/compressed: Add missing debugging sections to output [v6,29/29] x86/boot/compressed: Warn on orphan section placement

Message ID

20200821194310.3089815-16-keescook@chromium.org

State

Accepted

Commit

d7e3b065dc98e95f2dae6d2da031dd4c243bd7be

Headers

From: Kees Cook <keescook@chromium.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: Kees Cook <keescook@chromium.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Mark Rutland <mark.rutland@arm.com>, Ard Biesheuvel <ardb@kernel.org>,
	Peter Collingbourne <pcc@google.com>, James Morse <james.morse@arm.com>,
	Borislav Petkov <bp@suse.de>, Ingo Molnar <mingo@redhat.com>,
	Russell King <linux@armlinux.org.uk>,
	Masahiro Yamada <masahiroy@kernel.org>,
	Arvind Sankar <nivedita@alum.mit.edu>,
	Nick Desaulniers <ndesaulniers@google.com>,
	Nathan Chancellor <natechancellor@gmail.com>,
	Arnd Bergmann <arnd@arndb.de>, x86@kernel.org,
	clang-built-linux@googlegroups.com, linux-arch@vger.kernel.org,
	linux-efi@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH v6 15/29] arm/build: Refactor linker script headers
Date: Fri, 21 Aug 2020 12:42:56 -0700
Message-Id: <20200821194310.3089815-16-keescook@chromium.org>
In-Reply-To: <20200821194310.3089815-1-keescook@chromium.org>
References: <20200821194310.3089815-1-keescook@chromium.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-efi-owner@vger.kernel.org
Precedence: bulk

Series

Warn on orphan section placement | expand

Commit Message

Kees Cook Aug. 21, 2020, 7:42 p.m. UTC

In preparation for adding --orphan-handling=warn, refactor the linker
script header includes, and extract common macros.

Signed-off-by: Kees Cook <keescook@chromium.org>
---
 arch/arm/{kernel => include/asm}/vmlinux.lds.h | 13 ++++++++-----
 arch/arm/kernel/vmlinux-xip.lds.S              |  4 +---
 arch/arm/kernel/vmlinux.lds.S                  |  4 +---
 3 files changed, 10 insertions(+), 11 deletions(-)
 rename arch/arm/{kernel => include/asm}/vmlinux.lds.h (96%)

diff --git a/arch/arm/kernel/vmlinux.lds.h b/arch/arm/include/asm/vmlinux.lds.h
similarity index 96%
rename from arch/arm/kernel/vmlinux.lds.h
rename to arch/arm/include/asm/vmlinux.lds.h
index 381a8e105fa5..a08f4301b718 100644
--- a/arch/arm/kernel/vmlinux.lds.h
+++ b/arch/arm/include/asm/vmlinux.lds.h
@@ -1,4 +1,5 @@ 
 /* SPDX-License-Identifier: GPL-2.0 */
+#include <asm-generic/vmlinux.lds.h>
 
 #ifdef CONFIG_HOTPLUG_CPU
 #define ARM_CPU_DISCARD(x)
@@ -49,8 +50,12 @@ 
 		EXIT_CALL						\
 		ARM_MMU_DISCARD(*(.text.fixup))				\
 		ARM_MMU_DISCARD(*(__ex_table))				\
-		*(.discard)						\
-		*(.discard.*)
+		COMMON_DISCARDS
+
+#define ARM_STUBS_TEXT							\
+		*(.gnu.warning)						\
+		*(.glue_7)						\
+		*(.glue_7t)
 
 #define ARM_TEXT							\
 		IDMAP_TEXT						\
@@ -64,9 +69,7 @@ 
 		CPUIDLE_TEXT						\
 		LOCK_TEXT						\
 		KPROBES_TEXT						\
-		*(.gnu.warning)						\
-		*(.glue_7)						\
-		*(.glue_7t)						\
+		ARM_STUBS_TEXT						\
 		. = ALIGN(4);						\
 		*(.got)			/* Global offset table */	\
 		ARM_CPU_KEEP(PROC_INFO)
diff --git a/arch/arm/kernel/vmlinux-xip.lds.S b/arch/arm/kernel/vmlinux-xip.lds.S
index 3d4e88f08196..904c31fa20ed 100644
--- a/arch/arm/kernel/vmlinux-xip.lds.S
+++ b/arch/arm/kernel/vmlinux-xip.lds.S
@@ -9,15 +9,13 @@ 
 
 #include <linux/sizes.h>
 
-#include <asm-generic/vmlinux.lds.h>
+#include <asm/vmlinux.lds.h>
 #include <asm/cache.h>
 #include <asm/thread_info.h>
 #include <asm/memory.h>
 #include <asm/mpu.h>
 #include <asm/page.h>
 
-#include "vmlinux.lds.h"
-
 OUTPUT_ARCH(arm)
 ENTRY(stext)
 
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 5592f14b7e35..bb950c896a67 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -9,15 +9,13 @@ 
 #else
 
 #include <linux/pgtable.h>
-#include <asm-generic/vmlinux.lds.h>
+#include <asm/vmlinux.lds.h>
 #include <asm/cache.h>
 #include <asm/thread_info.h>
 #include <asm/memory.h>
 #include <asm/mpu.h>
 #include <asm/page.h>
 
-#include "vmlinux.lds.h"
-
 OUTPUT_ARCH(arm)
 ENTRY(stext)

[v6,15/29] arm/build: Refactor linker script headers

Commit Message

Patch