From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from 9pmail.ess.barracuda.com ([64.235.150.224]:42294 "EHLO 9pmail.ess.barracuda.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966263AbeFSURB (ORCPT ); Tue, 19 Jun 2018 16:17:01 -0400 From: Paul Burton Subject: [PATCH v2 0/3] Resolve -Wattribute-alias warnings from SYSCALL_DEFINEx() Date: Tue, 19 Jun 2018 13:14:55 -0700 Message-ID: <20180619201458.4559-1-paul.burton@mips.com> In-Reply-To: <20180619190225.7eguhiw3ixaiwpgl@pburton-laptop> References: <20180619190225.7eguhiw3ixaiwpgl@pburton-laptop> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kbuild-owner@vger.kernel.org List-ID: To: linux-kbuild@vger.kernel.org Cc: Mauro Carvalho Chehab , linux-mips@linux-mips.org, Arnd Bergmann , Ingo Molnar , Matthew Wilcox , Thomas Gleixner , Douglas Anderson , Josh Poimboeuf , Andrew Morton , Matthias Kaehlcke , He Zhe , Benjamin Herrenschmidt , Michal Marek , Khem Raj , Christophe Leroy , Al Viro , Stafford Horne , Gideon Israel Dsouza , Masahiro Yamada , Kees Cook , Michael Ellerman , Heiko Carstens , linux-kernel@vger.kernel.org, Paul Mackerras , linuxppc-dev@lists.ozlabs.org, Paul Burton 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