From: Paul Burton <paul.burton@mips.com> To: <linux-kbuild@vger.kernel.org> Cc: Mauro Carvalho Chehab <mchehab@kernel.org>, <linux-mips@linux-mips.org>, Arnd Bergmann <arnd@arndb.de>, Ingo Molnar <mingo@kernel.org>, Matthew Wilcox <matthew@wil.cx>, Thomas Gleixner <tglx@linutronix.de>, Douglas Anderson <dianders@chromium.org>, Josh Poimboeuf <jpoimboe@redhat.com>, Andrew Morton <akpm@linux-foundation.org>, Matthias Kaehlcke <mka@chromium.org>, He Zhe <zhe.he@windriver.com>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Michal Marek <michal.lkml@markovi.net>, Khem Raj <raj.khem@gmail.com>, Christophe Leroy <christophe.leroy@c-s.fr>, Al Viro <viro@zeniv.linux.org.uk>, Stafford Horne <shorne@gmail.com>, Gideon Israel Dsouza <gidisrael@gmail.com>, Masahiro Yamada <yamada.masahiro@socionext.com>, Kees Cook <keescook@chromium.org>, Michael Ellerman <mpe@ellerman.id.au>, Heiko Carstens <heiko.carstens@de.ibm.com>, <linux-kernel@vger.kernel.org>, Paul Mackerras <paulus@samba.org>, <linuxppc-dev@lists.ozlabs.org>, Paul Burton <paul.burton@mips.com> Subject: [PATCH v2 0/3] Resolve -Wattribute-alias warnings from SYSCALL_DEFINEx() Date: Tue, 19 Jun 2018 13:14:55 -0700 [thread overview] Message-ID: <20180619201458.4559-1-paul.burton@mips.com> (raw) In-Reply-To: <20180619190225.7eguhiw3ixaiwpgl@pburton-laptop> This series introduces infrastructure allowing compiler diagnostics to be disabled or their severity modified for specific pieces of code, with suitable abstractions to prevent that code from becoming tied to a specific compiler. This infrastructure is then used to disable the -Wattribute-alias warning around syscall definitions, which rely on type mismatches to sanitize arguments. Finally PowerPC-specific #pragma's are removed now that the generic code is handling this. The series takes Arnd's RFC patches & addresses the review comments they received. The most notable effect of this series to to avoid warnings & build failures caused by -Wattribute-alias when compiling the kernel with GCC 8. Applies cleanly atop v4.18-rc1. Thanks, Paul Arnd Bergmann (2): kbuild: add macro for controlling warnings to linux/compiler.h disable -Wattribute-alias warning for SYSCALL_DEFINEx() Paul Burton (1): powerpc: Remove -Wattribute-alias pragmas arch/powerpc/kernel/pci_32.c | 4 ---- arch/powerpc/kernel/pci_64.c | 4 ---- arch/powerpc/kernel/rtas.c | 4 ---- arch/powerpc/kernel/signal_32.c | 8 -------- arch/powerpc/kernel/signal_64.c | 4 ---- arch/powerpc/kernel/syscalls.c | 4 ---- arch/powerpc/mm/subpage-prot.c | 4 ---- include/linux/compat.h | 8 +++++++- include/linux/compiler-gcc.h | 27 +++++++++++++++++++++++++++ include/linux/compiler_types.h | 18 ++++++++++++++++++ include/linux/syscalls.h | 4 ++++ 11 files changed, 56 insertions(+), 33 deletions(-) -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Paul Burton <paul.burton@mips.com> To: linux-kbuild@vger.kernel.org Cc: Mauro Carvalho Chehab <mchehab@kernel.org>, linux-mips@linux-mips.org, Arnd Bergmann <arnd@arndb.de>, Ingo Molnar <mingo@kernel.org>, Matthew Wilcox <matthew@wil.cx>, Thomas Gleixner <tglx@linutronix.de>, Douglas Anderson <dianders@chromium.org>, Josh Poimboeuf <jpoimboe@redhat.com>, Andrew Morton <akpm@linux-foundation.org>, Matthias Kaehlcke <mka@chromium.org>, He Zhe <zhe.he@windriver.com>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Michal Marek <michal.lkml@markovi.net>, Khem Raj <raj.khem@gmail.com>, Christophe Leroy <christophe.leroy@c-s.fr>, Al Viro <viro@zeniv.linux.org.uk>, Stafford Horne <shorne@gmail.com>, Gideon Israel Dsouza <gidisrael@gmail.com>, Masahiro Yamada <yamada.masahiro@socionext.com>, Kees Cook <keescook@chromium.org>, Michael Ellerman <mpe@ellerman.id.au>, Heiko Carstens <heiko.carstens@de.ibm.com>, linux-kernel@vger.kernel.org, Paul Mackerras <paulus@samba.org>, linuxppc-dev@lists.ozlabs.org, Paul Burton <paul.burton@mips.com> Subject: [PATCH v2 0/3] Resolve -Wattribute-alias warnings from SYSCALL_DEFINEx() Date: Tue, 19 Jun 2018 13:14:55 -0700 [thread overview] Message-ID: <20180619201458.4559-1-paul.burton@mips.com> (raw) In-Reply-To: <20180619190225.7eguhiw3ixaiwpgl@pburton-laptop> This series introduces infrastructure allowing compiler diagnostics to be disabled or their severity modified for specific pieces of code, with suitable abstractions to prevent that code from becoming tied to a specific compiler. This infrastructure is then used to disable the -Wattribute-alias warning around syscall definitions, which rely on type mismatches to sanitize arguments. Finally PowerPC-specific #pragma's are removed now that the generic code is handling this. The series takes Arnd's RFC patches & addresses the review comments they received. The most notable effect of this series to to avoid warnings & build failures caused by -Wattribute-alias when compiling the kernel with GCC 8. Applies cleanly atop v4.18-rc1. Thanks, Paul Arnd Bergmann (2): kbuild: add macro for controlling warnings to linux/compiler.h disable -Wattribute-alias warning for SYSCALL_DEFINEx() Paul Burton (1): powerpc: Remove -Wattribute-alias pragmas arch/powerpc/kernel/pci_32.c | 4 ---- arch/powerpc/kernel/pci_64.c | 4 ---- arch/powerpc/kernel/rtas.c | 4 ---- arch/powerpc/kernel/signal_32.c | 8 -------- arch/powerpc/kernel/signal_64.c | 4 ---- arch/powerpc/kernel/syscalls.c | 4 ---- arch/powerpc/mm/subpage-prot.c | 4 ---- include/linux/compat.h | 8 +++++++- include/linux/compiler-gcc.h | 27 +++++++++++++++++++++++++++ include/linux/compiler_types.h | 18 ++++++++++++++++++ include/linux/syscalls.h | 4 ++++ 11 files changed, 56 insertions(+), 33 deletions(-) -- 2.17.1
next prev parent reply other threads:[~2018-06-19 20:17 UTC|newest] Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-06-16 0:53 [PATCH 0/3] Resolve -Wattribute-alias warnings from SYSCALL_DEFINEx() Paul Burton 2018-06-16 0:53 ` Paul Burton 2018-06-16 0:53 ` [PATCH 1/3] kbuild: add macro for controlling warnings to linux/compiler.h Paul Burton 2018-06-16 0:53 ` Paul Burton 2018-06-18 7:01 ` Christophe LEROY 2018-06-19 17:34 ` Masahiro Yamada 2018-06-19 19:02 ` Paul Burton 2018-06-19 20:14 ` Paul Burton [this message] 2018-06-19 20:14 ` [PATCH v2 0/3] Resolve -Wattribute-alias warnings from SYSCALL_DEFINEx() Paul Burton 2018-06-19 20:14 ` [PATCH v2 1/3] kbuild: add macro for controlling warnings to linux/compiler.h Paul Burton 2018-06-19 20:14 ` Paul Burton 2018-06-20 23:17 ` Masahiro Yamada 2018-06-19 20:14 ` [PATCH v2 2/3] disable -Wattribute-alias warning for SYSCALL_DEFINEx() Paul Burton 2018-06-19 20:14 ` Paul Burton 2018-06-19 20:14 ` [PATCH v2 3/3] powerpc: Remove -Wattribute-alias pragmas Paul Burton 2018-06-19 20:14 ` Paul Burton 2018-06-20 13:40 ` Christophe LEROY 2018-06-23 8:40 ` [PATCH v2 0/3] Resolve -Wattribute-alias warnings from SYSCALL_DEFINEx() Masahiro Yamada 2018-06-20 23:21 ` [PATCH 1/3] kbuild: add macro for controlling warnings to linux/compiler.h Masahiro Yamada 2018-06-21 0:02 ` Paul Burton 2018-06-16 0:53 ` [PATCH 2/3] disable -Wattribute-alias warning for SYSCALL_DEFINEx() Paul Burton 2018-06-16 0:53 ` Paul Burton 2018-06-18 7:01 ` Christophe LEROY 2018-06-16 0:53 ` [PATCH 3/3] Revert "powerpc: fix build failure by disabling attribute-alias warning in pci_32" Paul Burton 2018-06-16 0:53 ` Paul Burton 2018-06-18 7:01 ` Christophe LEROY 2018-06-19 13:01 ` Michael Ellerman 2018-06-19 13:01 ` Michael Ellerman 2018-06-17 1:11 ` [PATCH 0/3] Resolve -Wattribute-alias warnings from SYSCALL_DEFINEx() Stafford Horne 2018-06-18 7:00 ` Christophe LEROY 2018-06-18 13:05 ` Arnd Bergmann
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