diff options
author | Arnd Bergmann <arnd@arndb.de> | 2021-09-08 15:18:29 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-08 15:32:35 -0700 |
commit | a7a08b275a8bbade798c4bdaad07ade68fe7003c (patch) | |
tree | 25076445a217fe41316ba7c589bc126d3919ff42 /arch/arm64/lib | |
parent | 59ab844eed9c6b01d32dcb27b57accc23771b324 (diff) | |
download | linux-a7a08b275a8bbade798c4bdaad07ade68fe7003c.tar.bz2 |
arch: remove compat_alloc_user_space
All users of compat_alloc_user_space() and copy_in_user() have been
removed from the kernel, only a few functions in sparc remain that can be
changed to calling arch_copy_in_user() instead.
Link: https://lkml.kernel.org/r/20210727144859.4150043-7-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Feng Tang <feng.tang@intel.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/arm64/lib')
-rw-r--r-- | arch/arm64/lib/Makefile | 2 | ||||
-rw-r--r-- | arch/arm64/lib/copy_in_user.S | 77 |
2 files changed, 1 insertions, 78 deletions
diff --git a/arch/arm64/lib/Makefile b/arch/arm64/lib/Makefile index 6dd56a49790a..0941180a86d3 100644 --- a/arch/arm64/lib/Makefile +++ b/arch/arm64/lib/Makefile @@ -1,6 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 lib-y := clear_user.o delay.o copy_from_user.o \ - copy_to_user.o copy_in_user.o copy_page.o \ + copy_to_user.o copy_page.o \ clear_page.o csum.o insn.o memchr.o memcpy.o \ memset.o memcmp.o strcmp.o strncmp.o strlen.o \ strnlen.o strchr.o strrchr.o tishift.o diff --git a/arch/arm64/lib/copy_in_user.S b/arch/arm64/lib/copy_in_user.S deleted file mode 100644 index dbea3799c3ef..000000000000 --- a/arch/arm64/lib/copy_in_user.S +++ /dev/null @@ -1,77 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Copy from user space to user space - * - * Copyright (C) 2012 ARM Ltd. - */ - -#include <linux/linkage.h> - -#include <asm/asm-uaccess.h> -#include <asm/assembler.h> -#include <asm/cache.h> - -/* - * Copy from user space to user space (alignment handled by the hardware) - * - * Parameters: - * x0 - to - * x1 - from - * x2 - n - * Returns: - * x0 - bytes not copied - */ - .macro ldrb1 reg, ptr, val - user_ldst 9998f, ldtrb, \reg, \ptr, \val - .endm - - .macro strb1 reg, ptr, val - user_ldst 9998f, sttrb, \reg, \ptr, \val - .endm - - .macro ldrh1 reg, ptr, val - user_ldst 9997f, ldtrh, \reg, \ptr, \val - .endm - - .macro strh1 reg, ptr, val - user_ldst 9997f, sttrh, \reg, \ptr, \val - .endm - - .macro ldr1 reg, ptr, val - user_ldst 9997f, ldtr, \reg, \ptr, \val - .endm - - .macro str1 reg, ptr, val - user_ldst 9997f, sttr, \reg, \ptr, \val - .endm - - .macro ldp1 reg1, reg2, ptr, val - user_ldp 9997f, \reg1, \reg2, \ptr, \val - .endm - - .macro stp1 reg1, reg2, ptr, val - user_stp 9997f, \reg1, \reg2, \ptr, \val - .endm - -end .req x5 -srcin .req x15 -SYM_FUNC_START(__arch_copy_in_user) - add end, x0, x2 - mov srcin, x1 -#include "copy_template.S" - mov x0, #0 - ret -SYM_FUNC_END(__arch_copy_in_user) -EXPORT_SYMBOL(__arch_copy_in_user) - - .section .fixup,"ax" - .align 2 -9997: cmp dst, dstin - b.ne 9998f - // Before being absolutely sure we couldn't copy anything, try harder -USER(9998f, ldtrb tmp1w, [srcin]) -USER(9998f, sttrb tmp1w, [dst]) - add dst, dst, #1 -9998: sub x0, end, dst // bytes not copied - ret - .previous |