From: Will Deacon <will@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: linux-arch@vger.kernel.org, kernel-team@android.com,
Will Deacon <will@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Peter Zijlstra <peterz@infradead.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Segher Boessenkool <segher@kernel.crashing.org>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Luc Van Oostenryck <luc.vanoostenryck@gmail.com>,
Arnd Bergmann <arnd@arndb.de>,
Peter Oberparleiter <oberpar@linux.ibm.com>,
Masahiro Yamada <masahiroy@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>
Subject: [PATCH v4 00/11] Rework READ_ONCE() to improve codegen
Date: Tue, 21 Apr 2020 16:15:26 +0100 [thread overview]
Message-ID: <20200421151537.19241-1-will@kernel.org> (raw)
Hi,
It's me again. This is version four of the READ_ONCE() codegen improvement
patches that I previously posted here:
RFC: https://lore.kernel.org/lkml/20200110165636.28035-1-will@kernel.org
v2: https://lore.kernel.org/lkml/20200123153341.19947-1-will@kernel.org
v3: https://lore.kernel.org/lkml/20200415165218.20251-1-will@kernel.org/
Changes since v3 include:
* Drop the patch warning for GCC versions prior to 4.8
* Move the patch raising the minimum GCC version earlier in the series
* Reintroduce the old READ_ONCE_NOCHECK behaviour so that it can continue
to be used by stack unwinders
As before, this will break the build for sparc32 without the changes here:
https://lore.kernel.org/lkml/20200414214011.2699-1-will@kernel.org
and boy are they proving to be popular (I'm interpreting the silence as
monumental joy).
Ta,
Will
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Segher Boessenkool <segher@kernel.crashing.org>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Peter Oberparleiter <oberpar@linux.ibm.com>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
--->8
Will Deacon (11):
compiler/gcc: Raise minimum GCC version for kernel builds to 4.8
netfilter: Avoid assigning 'const' pointer to non-const pointer
net: tls: Avoid assigning 'const' pointer to non-const pointer
fault_inject: Don't rely on "return value" from WRITE_ONCE()
arm64: csum: Disable KASAN for do_csum()
READ_ONCE: Simplify implementations of {READ,WRITE}_ONCE()
READ_ONCE: Enforce atomicity for {READ,WRITE}_ONCE() memory accesses
READ_ONCE: Drop pointer qualifiers when reading from scalar types
locking/barriers: Use '__unqual_scalar_typeof' for load-acquire macros
arm64: barrier: Use '__unqual_scalar_typeof' for acquire/release
macros
gcov: Remove old GCC 3.4 support
Documentation/process/changes.rst | 2 +-
arch/arm/crypto/Kconfig | 12 +-
arch/arm64/include/asm/barrier.h | 16 +-
arch/arm64/lib/csum.c | 20 +-
crypto/Kconfig | 1 -
drivers/xen/time.c | 2 +-
include/asm-generic/barrier.h | 16 +-
include/linux/compiler-gcc.h | 5 +-
include/linux/compiler.h | 145 ++++----
include/linux/compiler_types.h | 21 ++
init/Kconfig | 1 -
kernel/gcov/Kconfig | 24 --
kernel/gcov/Makefile | 3 +-
kernel/gcov/gcc_3_4.c | 573 ------------------------------
lib/fault-inject.c | 4 +-
net/netfilter/core.c | 2 +-
net/tls/tls_main.c | 2 +-
scripts/gcc-plugins/Kconfig | 2 +-
18 files changed, 132 insertions(+), 719 deletions(-)
delete mode 100644 kernel/gcov/gcc_3_4.c
--
2.26.1.301.g55bc3eb7cb9-goog
next reply other threads:[~2020-04-21 15:15 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-21 15:15 Will Deacon [this message]
2020-04-21 15:15 ` [PATCH v4 01/11] compiler/gcc: Raise minimum GCC version for kernel builds to 4.8 Will Deacon
2020-04-21 17:15 ` Masahiro Yamada
2020-04-21 15:15 ` [PATCH v4 02/11] netfilter: Avoid assigning 'const' pointer to non-const pointer Will Deacon
2020-04-21 15:15 ` [PATCH v4 03/11] net: tls: " Will Deacon
2020-04-21 15:15 ` [PATCH v4 04/11] fault_inject: Don't rely on "return value" from WRITE_ONCE() Will Deacon
2020-04-21 15:15 ` [PATCH v4 05/11] arm64: csum: Disable KASAN for do_csum() Will Deacon
2020-04-22 9:49 ` Mark Rutland
2020-04-22 10:41 ` Will Deacon
2020-04-22 11:01 ` Robin Murphy
2020-04-24 9:41 ` David Laight
2020-04-24 11:00 ` Robin Murphy
2020-04-24 13:04 ` David Laight
2020-04-21 15:15 ` [PATCH v4 06/11] READ_ONCE: Simplify implementations of {READ,WRITE}_ONCE() Will Deacon
2020-04-22 9:51 ` Mark Rutland
2020-04-21 15:15 ` [PATCH v4 07/11] READ_ONCE: Enforce atomicity for {READ,WRITE}_ONCE() memory accesses Will Deacon
2020-04-24 16:31 ` Jann Horn
2020-04-24 17:11 ` Will Deacon
2020-04-24 17:43 ` Peter Zijlstra
2020-04-21 15:15 ` [PATCH v4 08/11] READ_ONCE: Drop pointer qualifiers when reading from scalar types Will Deacon
2020-04-22 10:25 ` Rasmus Villemoes
2020-04-22 11:48 ` Segher Boessenkool
2020-04-22 13:11 ` Will Deacon
2020-04-22 14:54 ` Will Deacon
2020-04-21 15:15 ` [PATCH v4 09/11] locking/barriers: Use '__unqual_scalar_typeof' for load-acquire macros Will Deacon
2020-04-21 15:15 ` [PATCH v4 10/11] arm64: barrier: Use '__unqual_scalar_typeof' for acquire/release macros Will Deacon
2020-04-21 15:15 ` [PATCH v4 11/11] gcov: Remove old GCC 3.4 support Will Deacon
2020-04-21 17:19 ` Masahiro Yamada
2020-04-21 18:42 ` [PATCH v4 00/11] Rework READ_ONCE() to improve codegen Linus Torvalds
2020-04-22 8:18 ` Will Deacon
2020-04-22 11:37 ` Peter Zijlstra
2020-04-22 12:26 ` Will Deacon
2020-04-24 13:42 ` Will Deacon
2020-04-24 15:54 ` Marco Elver
2020-04-24 16:52 ` Will Deacon
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