From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <3927b6f5-c8d0-1421-407d-850ede02dd0f@kernel.org> Date: Thu, 24 Feb 2022 22:33:46 -0600 MIME-Version: 1.0 Subject: Re: [PATCH v2 18/18] uaccess: drop maining CONFIG_SET_FS users Content-Language: en-US References: <20220216131332.1489939-1-arnd@kernel.org> <20220216131332.1489939-19-arnd@kernel.org> From: Dinh Nguyen In-Reply-To: <20220216131332.1489939-19-arnd@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit To: Arnd Bergmann , Linus Torvalds , Christoph Hellwig , linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-api@vger.kernel.org, arnd@arndb.de, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk Cc: linux@armlinux.org.uk, will@kernel.org, guoren@kernel.org, bcain@codeaurora.org, geert@linux-m68k.org, monstr@monstr.eu, tsbogend@alpha.franken.de, nickhu@andestech.com, green.hu@gmail.com, shorne@gmail.com, deller@gmx.de, mpe@ellerman.id.au, peterz@infradead.org, mingo@redhat.com, mark.rutland@arm.com, hca@linux.ibm.com, dalias@libc.org, davem@davemloft.net, richard@nod.at, x86@kernel.org, jcmvbkbc@gmail.com, ebiederm@xmission.com, akpm@linux-foundation.org, ardb@kernel.org, linux-alpha@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, openrisc@lists.librecores.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, linux-xtensa@linux-xtensa.org List-ID: On 2/16/22 07:13, Arnd Bergmann wrote: > From: Arnd Bergmann > > There are no remaining callers of set_fs(), so CONFIG_SET_FS > can be removed globally, along with the thread_info field and > any references to it. > > This turns access_ok() into a cheaper check against TASK_SIZE_MAX. > > With CONFIG_SET_FS gone, so drop all remaining references to > set_fs()/get_fs(), mm_segment_t and uaccess_kernel(). > > Signed-off-by: Arnd Bergmann > --- > arch/Kconfig | 3 - > arch/alpha/Kconfig | 1 - > arch/alpha/include/asm/processor.h | 4 -- > arch/alpha/include/asm/thread_info.h | 2 - > arch/alpha/include/asm/uaccess.h | 19 ------ > arch/arc/Kconfig | 1 - > arch/arc/include/asm/segment.h | 20 ------- > arch/arc/include/asm/thread_info.h | 3 - > arch/arc/include/asm/uaccess.h | 1 - > arch/arm/lib/uaccess_with_memcpy.c | 10 ---- > arch/csky/Kconfig | 1 - > arch/csky/include/asm/processor.h | 2 - > arch/csky/include/asm/segment.h | 10 ---- > arch/csky/include/asm/thread_info.h | 2 - > arch/csky/include/asm/uaccess.h | 3 - > arch/csky/kernel/asm-offsets.c | 1 - > arch/h8300/Kconfig | 1 - > arch/h8300/include/asm/processor.h | 1 - > arch/h8300/include/asm/segment.h | 40 ------------- > arch/h8300/include/asm/thread_info.h | 3 - > arch/h8300/kernel/entry.S | 1 - > arch/h8300/kernel/head_ram.S | 1 - > arch/h8300/mm/init.c | 6 -- > arch/h8300/mm/memory.c | 1 - > arch/hexagon/Kconfig | 1 - > arch/hexagon/include/asm/thread_info.h | 6 -- > arch/hexagon/kernel/process.c | 1 - > arch/microblaze/Kconfig | 1 - > arch/microblaze/include/asm/thread_info.h | 6 -- > arch/microblaze/include/asm/uaccess.h | 24 -------- > arch/microblaze/kernel/asm-offsets.c | 1 - > arch/microblaze/kernel/process.c | 1 - > arch/nds32/Kconfig | 1 - > arch/nds32/include/asm/thread_info.h | 4 -- > arch/nds32/include/asm/uaccess.h | 15 +---- > arch/nds32/kernel/process.c | 5 +- > arch/nds32/mm/alignment.c | 3 - > arch/nios2/Kconfig | 1 - > arch/nios2/include/asm/thread_info.h | 9 --- > arch/nios2/include/asm/uaccess.h | 12 ---- For NIOS2: Acked-by: Dinh Nguyen