From: Kees Cook <keescook@chromium.org>
To: Will Deacon <will@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>,
Thomas Gleixner <tglx@linutronix.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 v3 8/9] arm64/build: Use common DISCARDS in linker script
Date: Tue, 23 Jun 2020 18:49:39 -0700 [thread overview]
Message-ID: <20200624014940.1204448-9-keescook@chromium.org> (raw)
In-Reply-To: <20200624014940.1204448-1-keescook@chromium.org>
Use the common DISCARDS rule for the linker script in an effort to
regularize the linker script to prepare for warning on orphaned
sections. Additionally clean up left-over no-op macros.
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Will Deacon <will@kernel.org>
---
arch/arm64/kernel/vmlinux.lds.S | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
index 6827da7f3aa5..5427f502c3a6 100644
--- a/arch/arm64/kernel/vmlinux.lds.S
+++ b/arch/arm64/kernel/vmlinux.lds.S
@@ -6,6 +6,7 @@
*/
#define RO_EXCEPTION_TABLE_ALIGN 8
+#define RUNTIME_DISCARD_EXIT
#include <asm-generic/vmlinux.lds.h>
#include <asm/cache.h>
@@ -89,10 +90,8 @@ SECTIONS
* matching the same input section name. There is no documented
* order of matching.
*/
+ DISCARDS
/DISCARD/ : {
- EXIT_CALL
- *(.discard)
- *(.discard.*)
*(.interp .dynamic)
*(.dynsym .dynstr .hash .gnu.hash)
*(.eh_frame)
--
2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Kees Cook <keescook@chromium.org>
To: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
linux-arch@vger.kernel.org, linux-efi@vger.kernel.org,
Kees Cook <keescook@chromium.org>, Arnd Bergmann <arnd@arndb.de>,
Catalin Marinas <catalin.marinas@arm.com>,
Masahiro Yamada <masahiroy@kernel.org>,
x86@kernel.org, Nick Desaulniers <ndesaulniers@google.com>,
Russell King <linux@armlinux.org.uk>,
linux-kernel@vger.kernel.org,
Nathan Chancellor <natechancellor@gmail.com>,
clang-built-linux@googlegroups.com,
Arvind Sankar <nivedita@alum.mit.edu>,
Ingo Molnar <mingo@redhat.com>, James Morse <james.morse@arm.com>,
Thomas Gleixner <tglx@linutronix.de>,
Borislav Petkov <bp@suse.de>,
Peter Collingbourne <pcc@google.com>,
Ard Biesheuvel <ardb@kernel.org>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 8/9] arm64/build: Use common DISCARDS in linker script
Date: Tue, 23 Jun 2020 18:49:39 -0700 [thread overview]
Message-ID: <20200624014940.1204448-9-keescook@chromium.org> (raw)
In-Reply-To: <20200624014940.1204448-1-keescook@chromium.org>
Use the common DISCARDS rule for the linker script in an effort to
regularize the linker script to prepare for warning on orphaned
sections. Additionally clean up left-over no-op macros.
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Will Deacon <will@kernel.org>
---
arch/arm64/kernel/vmlinux.lds.S | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
index 6827da7f3aa5..5427f502c3a6 100644
--- a/arch/arm64/kernel/vmlinux.lds.S
+++ b/arch/arm64/kernel/vmlinux.lds.S
@@ -6,6 +6,7 @@
*/
#define RO_EXCEPTION_TABLE_ALIGN 8
+#define RUNTIME_DISCARD_EXIT
#include <asm-generic/vmlinux.lds.h>
#include <asm/cache.h>
@@ -89,10 +90,8 @@ SECTIONS
* matching the same input section name. There is no documented
* order of matching.
*/
+ DISCARDS
/DISCARD/ : {
- EXIT_CALL
- *(.discard)
- *(.discard.*)
*(.interp .dynamic)
*(.dynsym .dynstr .hash .gnu.hash)
*(.eh_frame)
--
2.25.1
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next prev parent reply other threads:[~2020-06-24 1:50 UTC|newest]
Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-24 1:49 [PATCH v3 0/9] Warn on orphan section placement Kees Cook
2020-06-24 1:49 ` Kees Cook
2020-06-24 1:49 ` [PATCH v3 1/9] vmlinux.lds.h: Add .gnu.version* to DISCARDS Kees Cook
2020-06-24 1:49 ` Kees Cook
2020-06-24 1:49 ` Kees Cook
2020-06-24 1:49 ` [PATCH v3 2/9] vmlinux.lds.h: Add .symtab, .strtab, and .shstrtab to STABS_DEBUG Kees Cook
2020-06-24 1:49 ` Kees Cook
2020-06-24 1:49 ` Kees Cook
2020-06-24 15:39 ` Arvind Sankar
2020-06-24 15:39 ` Arvind Sankar
2020-06-24 15:39 ` Arvind Sankar
2020-06-24 16:16 ` Fangrui Song
2020-06-24 16:16 ` Fangrui Song
2020-06-24 17:11 ` Arvind Sankar
2020-06-24 17:11 ` Arvind Sankar
2020-06-24 17:11 ` Arvind Sankar
2020-06-24 17:26 ` Fangrui Song
2020-06-24 17:26 ` Fangrui Song
2020-06-24 17:35 ` Arvind Sankar
2020-06-24 17:35 ` Arvind Sankar
2020-06-24 17:35 ` Arvind Sankar
2020-06-24 1:49 ` [PATCH v3 3/9] efi/libstub: Remove .note.gnu.property Kees Cook
2020-06-24 1:49 ` Kees Cook
2020-06-24 3:31 ` Fangrui Song
2020-06-24 3:31 ` Fangrui Song
2020-06-24 4:44 ` Kees Cook
2020-06-24 4:44 ` Kees Cook
2020-06-24 10:43 ` Will Deacon
2020-06-24 10:43 ` Will Deacon
2020-06-24 10:46 ` Ard Biesheuvel
2020-06-24 10:46 ` Ard Biesheuvel
2020-06-24 10:46 ` Ard Biesheuvel
2020-06-24 11:26 ` Will Deacon
2020-06-24 11:26 ` Will Deacon
2020-06-24 11:26 ` Will Deacon
2020-06-24 13:48 ` Dave Martin
2020-06-24 13:48 ` Dave Martin
2020-06-24 13:48 ` Dave Martin
2020-06-24 15:26 ` Will Deacon
2020-06-24 15:26 ` Will Deacon
2020-06-24 15:26 ` Will Deacon
2020-06-24 16:26 ` Dave Martin
2020-06-24 16:26 ` Dave Martin
2020-06-24 16:26 ` Dave Martin
2020-06-24 15:21 ` Kees Cook
2020-06-24 15:21 ` Kees Cook
2020-06-24 15:21 ` Kees Cook
2020-06-24 15:31 ` Ard Biesheuvel
2020-06-24 15:31 ` Ard Biesheuvel
2020-06-24 15:31 ` Ard Biesheuvel
2020-06-24 15:45 ` Kees Cook
2020-06-24 15:45 ` Kees Cook
2020-06-24 15:45 ` Kees Cook
2020-06-24 15:48 ` Ard Biesheuvel
2020-06-24 15:48 ` Ard Biesheuvel
2020-06-24 15:48 ` Ard Biesheuvel
2020-06-24 16:29 ` Dave Martin
2020-06-24 16:29 ` Dave Martin
2020-06-24 16:29 ` Dave Martin
2020-06-24 16:40 ` Ard Biesheuvel
2020-06-24 16:40 ` Ard Biesheuvel
2020-06-24 16:40 ` Ard Biesheuvel
2020-06-24 17:16 ` Dave Martin
2020-06-24 17:16 ` Dave Martin
2020-06-24 17:16 ` Dave Martin
2020-06-24 18:23 ` Ard Biesheuvel
2020-06-24 18:23 ` Ard Biesheuvel
2020-06-24 18:23 ` Ard Biesheuvel
2020-06-24 18:57 ` Ard Biesheuvel
2020-06-24 18:57 ` Ard Biesheuvel
2020-06-24 18:57 ` Ard Biesheuvel
2020-06-24 1:49 ` [PATCH v3 4/9] x86/build: Warn on orphan section placement Kees Cook
2020-06-24 1:49 ` Kees Cook
2020-06-24 18:36 ` kernel test robot
2020-06-27 15:44 ` Kees Cook
2020-06-27 15:44 ` Kees Cook
2020-06-29 14:54 ` Marco Elver
2020-06-29 14:54 ` Marco Elver
2020-06-29 15:26 ` Kees Cook
2020-06-29 15:26 ` Kees Cook
2020-06-24 1:49 ` [PATCH v3 5/9] x86/boot: " Kees Cook
2020-06-24 1:49 ` Kees Cook
2020-06-24 1:49 ` [PATCH v3 6/9] arm/build: " Kees Cook
2020-06-24 1:49 ` Kees Cook
2020-06-24 1:49 ` [PATCH v3 7/9] arm/boot: " Kees Cook
2020-06-24 1:49 ` Kees Cook
2020-06-24 1:49 ` Kees Cook [this message]
2020-06-24 1:49 ` [PATCH v3 8/9] arm64/build: Use common DISCARDS in linker script Kees Cook
2020-06-24 1:49 ` [PATCH v3 9/9] arm64/build: Warn on orphan section placement Kees Cook
2020-06-24 1:49 ` Kees Cook
2020-06-24 7:57 ` Will Deacon
2020-06-24 7:57 ` Will Deacon
2020-06-24 15:36 ` Kees Cook
2020-06-24 15:36 ` Kees Cook
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