diff options
30 files changed, 64 insertions, 117 deletions
diff --git a/arch/alpha/include/asm/segment.h b/arch/alpha/include/asm/segment.h deleted file mode 100644 index 0453d97daae7..000000000000 --- a/arch/alpha/include/asm/segment.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __ALPHA_SEGMENT_H -#define __ALPHA_SEGMENT_H - -/* Only here because we have some old header files that expect it.. */ - -#endif diff --git a/arch/alpha/kernel/smc37c669.c b/arch/alpha/kernel/smc37c669.c index 4dbd4e415041..bbbd34586de0 100644 --- a/arch/alpha/kernel/smc37c669.c +++ b/arch/alpha/kernel/smc37c669.c @@ -10,7 +10,6 @@ #include <asm/hwrpb.h> #include <asm/io.h> -#include <asm/segment.h> #if 0 # define DBG_DEVS(args) printk args diff --git a/arch/alpha/kernel/smc37c93x.c b/arch/alpha/kernel/smc37c93x.c index 733f08966fd2..71cd7aca38ce 100644 --- a/arch/alpha/kernel/smc37c93x.c +++ b/arch/alpha/kernel/smc37c93x.c @@ -11,7 +11,6 @@ #include <asm/hwrpb.h> #include <asm/io.h> -#include <asm/segment.h> #define SMC_DEBUG 0 diff --git a/arch/arc/include/asm/uaccess.h b/arch/arc/include/asm/uaccess.h index eabc3efa6c6d..526418543379 100644 --- a/arch/arc/include/asm/uaccess.h +++ b/arch/arc/include/asm/uaccess.h @@ -742,6 +742,7 @@ extern long arc_strnlen_user_noinline(const char __user *src, long n); #endif +#include <asm/segment.h> #include <asm-generic/uaccess.h> #endif diff --git a/arch/arm/include/asm/Kbuild b/arch/arm/include/asm/Kbuild index 0b2ecc98e086..60de9d13181a 100644 --- a/arch/arm/include/asm/Kbuild +++ b/arch/arm/include/asm/Kbuild @@ -14,7 +14,6 @@ generic-y += msi.h generic-y += parport.h generic-y += preempt.h generic-y += seccomp.h -generic-y += segment.h generic-y += serial.h generic-y += simd.h generic-y += trace_clock.h diff --git a/arch/arm64/include/asm/Kbuild b/arch/arm64/include/asm/Kbuild index 9e977dedf193..1de6e05ce48b 100644 --- a/arch/arm64/include/asm/Kbuild +++ b/arch/arm64/include/asm/Kbuild @@ -17,7 +17,6 @@ generic-y += mmiowb.h generic-y += msi.h generic-y += qrwlock.h generic-y += qspinlock.h -generic-y += segment.h generic-y += serial.h generic-y += set_memory.h generic-y += switch_to.h diff --git a/arch/c6x/include/asm/Kbuild b/arch/c6x/include/asm/Kbuild index 6b168d32fbff..2162eb32dcec 100644 --- a/arch/c6x/include/asm/Kbuild +++ b/arch/c6x/include/asm/Kbuild @@ -30,7 +30,6 @@ generic-y += pci.h generic-y += percpu.h generic-y += pgalloc.h generic-y += preempt.h -generic-y += segment.h generic-y += serial.h generic-y += shmparam.h generic-y += tlbflush.h diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig index 61c01db6c292..ecfc4b4b6373 100644 --- a/arch/h8300/Kconfig +++ b/arch/h8300/Kconfig @@ -23,6 +23,7 @@ config H8300 select HAVE_ARCH_KGDB select HAVE_ARCH_HASH select CPU_NO_EFFICIENT_FFS + select UACCESS_MEMCPY config CPU_BIG_ENDIAN def_bool y diff --git a/arch/h8300/include/asm/Kbuild b/arch/h8300/include/asm/Kbuild index f2e22058e488..79cd1e605ec4 100644 --- a/arch/h8300/include/asm/Kbuild +++ b/arch/h8300/include/asm/Kbuild @@ -47,6 +47,7 @@ generic-y += timex.h generic-y += tlbflush.h generic-y += topology.h generic-y += trace_clock.h +generic-y += uaccess.h generic-y += unaligned.h generic-y += vga.h generic-y += word-at-a-time.h diff --git a/arch/h8300/include/asm/uaccess.h b/arch/h8300/include/asm/uaccess.h deleted file mode 100644 index bc8031949d07..000000000000 --- a/arch/h8300/include/asm/uaccess.h +++ /dev/null @@ -1,55 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _ASM_UACCESS_H -#define _ASM_UACCESS_H - -#include <linux/string.h> - -static inline __must_check unsigned long -raw_copy_from_user(void *to, const void __user * from, unsigned long n) -{ - if (__builtin_constant_p(n)) { - switch(n) { - case 1: - *(u8 *)to = *(u8 __force *)from; - return 0; - case 2: - *(u16 *)to = *(u16 __force *)from; - return 0; - case 4: - *(u32 *)to = *(u32 __force *)from; - return 0; - } - } - - memcpy(to, (const void __force *)from, n); - return 0; -} - -static inline __must_check unsigned long -raw_copy_to_user(void __user *to, const void *from, unsigned long n) -{ - if (__builtin_constant_p(n)) { - switch(n) { - case 1: - *(u8 __force *)to = *(u8 *)from; - return 0; - case 2: - *(u16 __force *)to = *(u16 *)from; - return 0; - case 4: - *(u32 __force *)to = *(u32 *)from; - return 0; - default: - break; - } - } - - memcpy((void __force *)to, from, n); - return 0; -} -#define INLINE_COPY_FROM_USER -#define INLINE_COPY_TO_USER - -#include <asm-generic/uaccess.h> - -#endif diff --git a/arch/hexagon/include/asm/Kbuild b/arch/hexagon/include/asm/Kbuild index 4a3d72f76ea2..84bb1ed1b931 100644 --- a/arch/hexagon/include/asm/Kbuild +++ b/arch/hexagon/include/asm/Kbuild @@ -29,7 +29,6 @@ generic-y += pci.h generic-y += percpu.h generic-y += preempt.h generic-y += sections.h -generic-y += segment.h generic-y += serial.h generic-y += shmparam.h generic-y += topology.h diff --git a/arch/hexagon/include/asm/uaccess.h b/arch/hexagon/include/asm/uaccess.h index a30e58d5f351..7a34092e8b58 100644 --- a/arch/hexagon/include/asm/uaccess.h +++ b/arch/hexagon/include/asm/uaccess.h @@ -24,7 +24,6 @@ * User space memory access functions */ #include <linux/mm.h> -#include <asm/segment.h> #include <asm/sections.h> /* diff --git a/arch/ia64/include/asm/segment.h b/arch/ia64/include/asm/segment.h deleted file mode 100644 index b89e2b3d648f..000000000000 --- a/arch/ia64/include/asm/segment.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef _ASM_IA64_SEGMENT_H -#define _ASM_IA64_SEGMENT_H - -/* Only here because we have some old header files that expect it.. */ - -#endif /* _ASM_IA64_SEGMENT_H */ diff --git a/arch/mips/include/asm/Kbuild b/arch/mips/include/asm/Kbuild index 87b86cdf126a..a03cd4e24f37 100644 --- a/arch/mips/include/asm/Kbuild +++ b/arch/mips/include/asm/Kbuild @@ -19,7 +19,6 @@ generic-y += preempt.h generic-y += qrwlock.h generic-y += qspinlock.h generic-y += sections.h -generic-y += segment.h generic-y += trace_clock.h generic-y += unaligned.h generic-y += user.h diff --git a/arch/nds32/include/asm/Kbuild b/arch/nds32/include/asm/Kbuild index f67a327777b5..d8ce778d0640 100644 --- a/arch/nds32/include/asm/Kbuild +++ b/arch/nds32/include/asm/Kbuild @@ -37,7 +37,6 @@ generic-y += pci.h generic-y += percpu.h generic-y += preempt.h generic-y += sections.h -generic-y += segment.h generic-y += serial.h generic-y += switch_to.h generic-y += timex.h diff --git a/arch/nios2/include/asm/Kbuild b/arch/nios2/include/asm/Kbuild index d7ef3512504a..a8ffdd007f6c 100644 --- a/arch/nios2/include/asm/Kbuild +++ b/arch/nios2/include/asm/Kbuild @@ -33,7 +33,6 @@ generic-y += pci.h generic-y += percpu.h generic-y += preempt.h generic-y += sections.h -generic-y += segment.h generic-y += serial.h generic-y += spinlock.h generic-y += topology.h diff --git a/arch/openrisc/include/asm/Kbuild b/arch/openrisc/include/asm/Kbuild index 1919cc5e0f11..164be10062bc 100644 --- a/arch/openrisc/include/asm/Kbuild +++ b/arch/openrisc/include/asm/Kbuild @@ -34,7 +34,6 @@ generic-y += qspinlock.h generic-y += qrwlock_types.h generic-y += qrwlock.h generic-y += sections.h -generic-y += segment.h generic-y += shmparam.h generic-y += switch_to.h generic-y += topology.h diff --git a/arch/openrisc/kernel/ptrace.c b/arch/openrisc/kernel/ptrace.c index eb97a8e7c8aa..e8fb2a764f46 100644 --- a/arch/openrisc/kernel/ptrace.c +++ b/arch/openrisc/kernel/ptrace.c @@ -30,7 +30,6 @@ #include <linux/elf.h> #include <asm/thread_info.h> -#include <asm/segment.h> #include <asm/page.h> #include <asm/pgtable.h> diff --git a/arch/openrisc/kernel/setup.c b/arch/openrisc/kernel/setup.c index c605bdad1746..17c00d06d91b 100644 --- a/arch/openrisc/kernel/setup.c +++ b/arch/openrisc/kernel/setup.c @@ -39,7 +39,6 @@ #include <linux/device.h> #include <asm/sections.h> -#include <asm/segment.h> #include <asm/pgtable.h> #include <asm/types.h> #include <asm/setup.h> diff --git a/arch/openrisc/kernel/traps.c b/arch/openrisc/kernel/traps.c index d8981cbb852a..6ed7293ef007 100644 --- a/arch/openrisc/kernel/traps.c +++ b/arch/openrisc/kernel/traps.c @@ -35,7 +35,6 @@ #include <linux/kallsyms.h> #include <linux/uaccess.h> -#include <asm/segment.h> #include <asm/io.h> #include <asm/pgtable.h> #include <asm/unwinder.h> diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c index abe87e54e231..e63cb4a91a3e 100644 --- a/arch/openrisc/mm/init.c +++ b/arch/openrisc/mm/init.c @@ -32,7 +32,6 @@ #include <linux/blkdev.h> /* for initrd_* */ #include <linux/pagemap.h> -#include <asm/segment.h> #include <asm/pgalloc.h> #include <asm/pgtable.h> #include <asm/dma.h> diff --git a/arch/openrisc/mm/tlb.c b/arch/openrisc/mm/tlb.c index 6c253a2e86bc..7f9f50161dfe 100644 --- a/arch/openrisc/mm/tlb.c +++ b/arch/openrisc/mm/tlb.c @@ -26,7 +26,6 @@ #include <linux/mm.h> #include <linux/init.h> -#include <asm/segment.h> #include <asm/tlbflush.h> #include <asm/pgtable.h> #include <asm/mmu_context.h> diff --git a/arch/parisc/include/asm/Kbuild b/arch/parisc/include/asm/Kbuild index ed2d8cc94909..005ee8ad0446 100644 --- a/arch/parisc/include/asm/Kbuild +++ b/arch/parisc/include/asm/Kbuild @@ -19,7 +19,6 @@ generic-y += mmiowb.h generic-y += percpu.h generic-y += preempt.h generic-y += seccomp.h -generic-y += segment.h generic-y += trace_clock.h generic-y += user.h generic-y += vga.h diff --git a/arch/s390/include/asm/segment.h b/arch/s390/include/asm/segment.h deleted file mode 100644 index 97a0582b8d0f..000000000000 --- a/arch/s390/include/asm/segment.h +++ /dev/null @@ -1,5 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _ASM_SEGMENT_H -#define _ASM_SEGMENT_H - -#endif diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index cd3df5514552..ad71132374f0 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -24,7 +24,6 @@ #include <linux/seccomp.h> #include <linux/compat.h> #include <trace/syscall.h> -#include <asm/segment.h> #include <asm/page.h> #include <asm/pgtable.h> #include <asm/pgalloc.h> diff --git a/arch/unicore32/include/asm/Kbuild b/arch/unicore32/include/asm/Kbuild index c93dc6478cb2..5fe2426bb7a5 100644 --- a/arch/unicore32/include/asm/Kbuild +++ b/arch/unicore32/include/asm/Kbuild @@ -28,7 +28,6 @@ generic-y += parport.h generic-y += percpu.h generic-y += preempt.h generic-y += sections.h -generic-y += segment.h generic-y += serial.h generic-y += shmparam.h generic-y += syscalls.h diff --git a/arch/xtensa/include/asm/segment.h b/arch/xtensa/include/asm/segment.h deleted file mode 100644 index 98964ad15ca2..000000000000 --- a/arch/xtensa/include/asm/segment.h +++ /dev/null @@ -1,16 +0,0 @@ -/* - * include/asm-xtensa/segment.h - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2001 - 2005 Tensilica Inc. - */ - -#ifndef _XTENSA_SEGMENT_H -#define _XTENSA_SEGMENT_H - -#include <linux/uaccess.h> - -#endif /* _XTENSA_SEGEMENT_H */ diff --git a/include/asm-generic/segment.h b/include/asm-generic/segment.h deleted file mode 100644 index 5580eace622c..000000000000 --- a/include/asm-generic/segment.h +++ /dev/null @@ -1,9 +0,0 @@ -#ifndef __ASM_GENERIC_SEGMENT_H -#define __ASM_GENERIC_SEGMENT_H -/* - * Only here because we have some old header files that expect it... - * - * New architectures probably don't want to have their own version. - */ - -#endif /* __ASM_GENERIC_SEGMENT_H */ diff --git a/include/asm-generic/uaccess.h b/include/asm-generic/uaccess.h index b3d2241e03f8..e935318804f8 100644 --- a/include/asm-generic/uaccess.h +++ b/include/asm-generic/uaccess.h @@ -9,7 +9,63 @@ */ #include <linux/string.h> -#include <asm/segment.h> +#ifdef CONFIG_UACCESS_MEMCPY +static inline __must_check unsigned long +raw_copy_from_user(void *to, const void __user * from, unsigned long n) +{ + if (__builtin_constant_p(n)) { + switch(n) { + case 1: + *(u8 *)to = *(u8 __force *)from; + return 0; + case 2: + *(u16 *)to = *(u16 __force *)from; + return 0; + case 4: + *(u32 *)to = *(u32 __force *)from; + return 0; +#ifdef CONFIG_64BIT + case 8: + *(u64 *)to = *(u64 __force *)from; + return 0; +#endif + } + } + + memcpy(to, (const void __force *)from, n); + return 0; +} + +static inline __must_check unsigned long +raw_copy_to_user(void __user *to, const void *from, unsigned long n) +{ + if (__builtin_constant_p(n)) { + switch(n) { + case 1: + *(u8 __force *)to = *(u8 *)from; + return 0; + case 2: + *(u16 __force *)to = *(u16 *)from; + return 0; + case 4: + *(u32 __force *)to = *(u32 *)from; + return 0; +#ifdef CONFIG_64BIT + case 8: + *(u64 __force *)to = *(u64 *)from; + return 0; +#endif + default: + break; + } + } + + memcpy((void __force *)to, from, n); + return 0; +} +#define INLINE_COPY_FROM_USER +#define INLINE_COPY_TO_USER +#endif /* CONFIG_UACCESS_MEMCPY */ #define MAKE_MM_SEG(s) ((mm_segment_t) { (s) }) diff --git a/lib/Kconfig b/lib/Kconfig index 3577609b61be..8d9239a4156c 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -601,6 +601,10 @@ config ARCH_NO_SG_CHAIN config ARCH_HAS_PMEM_API bool +# use memcpy to implement user copies for nommu architectures +config UACCESS_MEMCPY + bool + config ARCH_HAS_UACCESS_FLUSHCACHE bool |
