diff --git a/arch/Kconfig b/arch/Kconfig
index 315d37626ddc6a0b0a3dd5194d4b60185b8c2c7b..cd211a14a88f7774bec3abbe3b371f0302e624a0 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -847,7 +847,4 @@ config STRICT_MODULE_RWX
config ARCH_WANT_RELAX_ORDER
bool
-config ARCH_HAS_RAW_COPY_USER
- bool
-
source "kernel/gcov/Kconfig"
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 1be5f61dc630749ee9087b55735508a791de6900..0e49d39ea74add90d066a9d7bf07e63a6e4394c9 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -26,7 +26,6 @@ config ALPHA
select ODD_RT_SIGACTION
select OLD_SIGSUSPEND
select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
- select ARCH_HAS_RAW_COPY_USER
help
The Alpha is a 64-bit general-purpose processor designed and
marketed by the Digital Equipment Corporation of blessed memory,
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 7e213ff4f01f01560354452acd1b1a23ae0bab2b..c9f30f4763abce5ca1ffda1817e87bb5de410861 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -44,7 +44,6 @@ config ARC
select HAVE_GENERIC_DMA_COHERENT
select HAVE_KERNEL_GZIP
select HAVE_KERNEL_LZMA
- select ARCH_HAS_RAW_COPY_USER
config MIGHT_HAVE_PCI
bool
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 6fab7f34739cfb34534d9dba7ab59b6c2bc1e045..0d4e71b42c77da986a2dc471a1f335be5e958527 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -96,7 +96,6 @@ config ARM
select PERF_USE_VMALLOC
select RTC_LIB
select SYS_SUPPORTS_APM_EMULATION
- select ARCH_HAS_RAW_COPY_USER
# Above selects are sorted alphabetically; please add new ones
# according to that. Thanks.
help
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 3c833ff3303ca9a894bf11fc6ea2b518f659b7ab..3741859765cfe050d2c4a174d613ff90e1074be0 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -115,7 +115,6 @@ config ARM64
select SPARSE_IRQ
select SYSCTL_EXCEPTION_TRACE
select THREAD_INFO_IN_TASK
- select ARCH_HAS_RAW_COPY_USER
help
ARM 64-bit (AArch64) Linux support.
diff --git a/arch/avr32/Kconfig b/arch/avr32/Kconfig
index 8c349f2a9ebbf7064e745216905e31f204555911..7e75d45e20cdf271ce8f0025fc362e3c37048dfd 100644
--- a/arch/avr32/Kconfig
+++ b/arch/avr32/Kconfig
@@ -19,7 +19,6 @@ config AVR32
select HAVE_MOD_ARCH_SPECIFIC
select MODULES_USE_ELF_RELA
select HAVE_NMI
- select ARCH_HAS_RAW_COPY_USER
help
AVR32 is a high-performance 32-bit RISC microprocessor core,
designed for cost-sensitive embedded applications, with particular
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index 919dad1436f7bafdef5487eaa3fc67bb9913f662..3c1bd640042a0dc9f0c0866c8c93c7346cf1171a 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -41,7 +41,6 @@ config BLACKFIN
select MODULES_USE_ELF_RELA
select HAVE_DEBUG_STACKOVERFLOW
select HAVE_NMI
- select ARCH_HAS_RAW_COPY_USER
config GENERIC_CSUM
def_bool y
diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig
index 3c7bd9a29f907834e39027f990dece16c8e38b35..5aa8ea8bad2db1cde0719d2bec9144d1c894b832 100644
--- a/arch/c6x/Kconfig
+++ b/arch/c6x/Kconfig
@@ -18,7 +18,6 @@ config C6X
select GENERIC_CLOCKEVENTS
select MODULES_USE_ELF_RELA
select ARCH_NO_COHERENT_DMA_MMAP
- select ARCH_HAS_RAW_COPY_USER
config MMU
def_bool n
diff --git a/arch/cris/Kconfig b/arch/cris/Kconfig
index 36f94c45e3f9664f79e759b0a4b585afddf6a231..71b758dc3a96f9a005a4e9da0ed2e7d21826e513 100644
--- a/arch/cris/Kconfig
+++ b/arch/cris/Kconfig
@@ -71,7 +71,6 @@ config CRIS
select GENERIC_SCHED_CLOCK if ETRAX_ARCH_V32
select HAVE_DEBUG_BUGVERBOSE if ETRAX_ARCH_V32
select HAVE_NMI
- select ARCH_HAS_RAW_COPY_USER
config HZ
int
diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig
index e489fef111dd7428a5644196c80720c6a8cb95d3..eefd9a4ed156753b6f07cb41cd0cb97ca0f99a48 100644
--- a/arch/frv/Kconfig
+++ b/arch/frv/Kconfig
@@ -16,7 +16,6 @@ config FRV
select OLD_SIGACTION
select HAVE_DEBUG_STACKOVERFLOW
select ARCH_NO_COHERENT_DMA_MMAP
- select ARCH_HAS_RAW_COPY_USER
config ZONE_DMA
bool
diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index 4738834170041c23f5581a8bedc51d5209a13abe..3ae852507e57952332c1b260520a631d3ec37c69 100644
--- a/arch/h8300/Kconfig
+++ b/arch/h8300/Kconfig
@@ -22,7 +22,6 @@ config H8300
select HAVE_ARCH_KGDB
select HAVE_ARCH_HASH
select CPU_NO_EFFICIENT_FFS
- select ARCH_HAS_RAW_COPY_USER
config RWSEM_GENERIC_SPINLOCK
def_bool y
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index 0c536a83ea711b52823fae71d07570fa082054f0..1941e4baaee63fdd360da51e6a8c607132addaaf 100644
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -26,7 +26,6 @@ config HEXAGON
select GENERIC_CLOCKEVENTS_BROADCAST
select MODULES_USE_ELF_RELA
select GENERIC_CPU_DEVICES
- select ARCH_HAS_RAW_COPY_USER
---help---
Qualcomm Hexagon is a processor architecture designed for high
performance and low power across a wide variety of applications.
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 0ed0e44856b261f51ff43f97e252a7f1fb40e2d4..18ca6a9ce566cc3b8463d22ecfe3e27c25fc24f7 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -53,7 +53,6 @@ config IA64
select ARCH_USE_CMPXCHG_LOCKREF
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_HARDENED_USERCOPY
- select ARCH_HAS_RAW_COPY_USER
default y
help
The Itanium Processor Family is Intel's 64-bit successor to
diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig
index b3e82bdd6db0b7c18cb37e5e63c7723a9c1f315c..95474460b367208a0dc327b1bf120af0eca2816c 100644
--- a/arch/m32r/Kconfig
+++ b/arch/m32r/Kconfig
@@ -19,7 +19,6 @@ config M32R
select HAVE_DEBUG_STACKOVERFLOW
select CPU_NO_EFFICIENT_FFS
select DMA_NOOP_OPS
- select ARCH_HAS_RAW_COPY_USER
config SBUS
bool
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 7d345758ea1610c58a6ca8bf5c4263cd81e49da9..d140206d5d29242e72961a18216b9930a48853a8 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -22,7 +22,6 @@ config M68K
select MODULES_USE_ELF_RELA
select OLD_SIGSUSPEND3
select OLD_SIGACTION
- select ARCH_HAS_RAW_COPY_USER
config RWSEM_GENERIC_SPINLOCK
bool
diff --git a/arch/metag/Kconfig b/arch/metag/Kconfig
index ecce0c5ec8e8d4ff42ac7e7702336940f37ad53d..5b7a45d99cfbfd5397554b399a6ec2bd8e4b5582 100644
--- a/arch/metag/Kconfig
+++ b/arch/metag/Kconfig
@@ -1,6 +1,5 @@
config METAG
def_bool y
- select ARCH_HAS_RAW_COPY_USER
select EMBEDDED
select GENERIC_ATOMIC64
select GENERIC_CLOCKEVENTS
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 1aff3658a1047a1fca5d4cba2f4b1d7361a1b6c5..85885a501dcec9cf3d05880684304085ea9db399 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -34,7 +34,6 @@ config MICROBLAZE
select TRACING_SUPPORT
select VIRT_TO_BUS
select CPU_NO_EFFICIENT_FFS
- select ARCH_HAS_RAW_COPY_USER
config SWAP
def_bool n
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index aff5633bfe4d82494e7df2637292ca5d1dc08e8b..a008a9f03072deb900409ad2ef93a6bd65cdb48e 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -69,7 +69,6 @@ config MIPS
select HAVE_EXIT_THREAD
select HAVE_REGS_AND_STACK_ACCESS_API
select HAVE_ARCH_HARDENED_USERCOPY
- select ARCH_HAS_RAW_COPY_USER
menu "Machine selection"
diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig
index a96f3dcb01198ff377ed15d84516b8fff265067f..38e3494bfb63ad0e620f6de3a93190f1e19944ca 100644
--- a/arch/mn10300/Kconfig
+++ b/arch/mn10300/Kconfig
@@ -16,7 +16,6 @@ config MN10300
select OLD_SIGACTION
select HAVE_DEBUG_STACKOVERFLOW
select ARCH_NO_COHERENT_DMA_MMAP
- select ARCH_HAS_RAW_COPY_USER
config AM33_2
def_bool n
diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index 45b4727e31363c38c6895e36dd5924206f3abd30..51a56c8b04b451ce140a5708b4d5ca57bc7a6404 100644
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -16,7 +16,6 @@ config NIOS2
select SPARSE_IRQ
select USB_ARCH_HAS_HCD if USB_SUPPORT
select CPU_NO_EFFICIENT_FFS
- select ARCH_HAS_RAW_COPY_USER
config GENERIC_CSUM
def_bool y
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
index 38954181fa96d1206e3a164e0cc009b4e8435cc8..1e95920b07377417415c8622201d8e04bfd1f1a7 100644
--- a/arch/openrisc/Kconfig
+++ b/arch/openrisc/Kconfig
@@ -28,7 +28,6 @@ config OPENRISC
select OR1K_PIC
select CPU_NO_EFFICIENT_FFS if !OPENRISC_HAVE_INST_FF1
select NO_BOOTMEM
- select ARCH_HAS_RAW_COPY_USER
config MMU
def_bool y
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 15b7b279a1692f9acd9d60b2d90ede0679d75dd8..ad294b3fb90be4bb4e4a800fdd50354e7a5e970c 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -41,7 +41,6 @@ config PARISC
select GENERIC_CLOCKEVENTS
select ARCH_NO_COHERENT_DMA_MMAP
select CPU_NO_EFFICIENT_FFS
- select ARCH_HAS_RAW_COPY_USER
help
The PA-RISC microprocessor is designed by Hewlett-Packard and used
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 839f088872697ac8917116bea49b4e9346b3b9fc..97a8bc8a095ce4199ad2e4e0c88c2933fc3b6987 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -87,7 +87,6 @@ config PPC
select ARCH_HAS_DMA_SET_COHERENT_MASK
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_GCOV_PROFILE_ALL
- select ARCH_HAS_RAW_COPY_USER
select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE
select ARCH_HAS_SG_CHAIN
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 0724dbf2d8f8add5d8388e669978fcf527a367f6..a2dcef0aacc76db2d318e7b8785f9f8dadbca02d 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -178,7 +178,6 @@ config S390
select ARCH_HAS_SCALED_CPUTIME
select VIRT_TO_BUS
select HAVE_NMI
- select ARCH_HAS_RAW_COPY_USER
config SCHED_OMIT_FRAME_POINTER
diff --git a/arch/score/Kconfig b/arch/score/Kconfig
index 4d241cfedc3bddf663a5060c3d383c4208bcf8fd..507d6318138941aa5dec6cc767e992ca598e009f 100644
--- a/arch/score/Kconfig
+++ b/arch/score/Kconfig
@@ -15,7 +15,6 @@ config SCORE
select MODULES_USE_ELF_REL
select CLONE_BACKWARDS
select CPU_NO_EFFICIENT_FFS
- select ARCH_HAS_RAW_COPY_USER
choice
prompt "System type"
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index c689645eb8b7f3e3dba95275f8450c2229e3d9a3..ee086958b2b21f271443717e19d23a4a85ddf023 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -48,7 +48,6 @@ config SUPERH
select HAVE_ARCH_AUDITSYSCALL
select HAVE_FUTEX_CMPXCHG if FUTEX
select HAVE_NMI
- select ARCH_HAS_RAW_COPY_USER
help
The SuperH is a RISC processor targeted for use in embedded systems
and consumer electronics; it was also used in the Sega Dreamcast
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 68353048f24e7645b6ebddf5a0a0f5b9acf1f7bd..68ac5c7cd982619581dfa65b75ac89aa8e359554 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -45,7 +45,6 @@ config SPARC
select HAVE_ARCH_HARDENED_USERCOPY
select PROVE_LOCKING_SMALL if PROVE_LOCKING
select ARCH_WANT_RELAX_ORDER
- select ARCH_HAS_RAW_COPY_USER
config SPARC32
def_bool !64BIT
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 27808d86eb577ec7638a13209ab56060e48da2c0..4583c03200592229f7de56836428c9aab2e03fdf 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -33,7 +33,6 @@ config TILE
select USER_STACKTRACE_SUPPORT
select USE_PMC if PERF_EVENTS
select VIRT_TO_BUS
- select ARCH_HAS_RAW_COPY_USER
config MMU
def_bool y
diff --git a/arch/um/Kconfig.common b/arch/um/Kconfig.common
index e13f763849b1ce872238ae43459a488fd9a662c3..fd443852103c998fd997c04ee64ebb7c32716785 100644
--- a/arch/um/Kconfig.common
+++ b/arch/um/Kconfig.common
@@ -13,7 +13,6 @@ config UML
select GENERIC_CLOCKEVENTS
select HAVE_GCC_PLUGINS
select TTY # Needed for line.c
- select ARCH_HAS_RAW_COPY_USER
config MMU
bool
diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
index 319519eaed246a3ec77ee2bdd670029776ecc8db..0769066929c636ecbaa78a9b9a0455aaa7f3abef 100644
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig
@@ -18,7 +18,6 @@ config UNICORE32
select ARCH_WANT_FRAME_POINTERS
select GENERIC_IOMAP
select MODULES_USE_ELF_REL
- select ARCH_HAS_RAW_COPY_USER
help
UniCore-32 is 32-bit Instruction Set Architecture,
including a series of low-power-consumption RISC chip
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5f59fc388063130f02a4b8c20620117bc7ceec21..cc98d5a294eee25c56209d92e38bdb08f379780d 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -175,7 +175,6 @@ config X86
select USER_STACKTRACE_SUPPORT
select VIRT_TO_BUS
select X86_FEATURE_NAMES if PROC_FS
- select ARCH_HAS_RAW_COPY_USER
config INSTRUCTION_DECODER
def_bool y
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 043d37d45919f0e00bc8353d9f322483cdd8a1fa..f4126cf997a469da01161244e93a320d1dd2104e 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -29,7 +29,6 @@ config XTENSA
select NO_BOOTMEM
select PERF_USE_VMALLOC
select VIRT_TO_BUS
- select ARCH_HAS_RAW_COPY_USER
help
Xtensa processors are 32-bit RISC machines designed by Tensilica
primarily for embedded systems. These processors are both
diff --git a/include/asm-generic/uaccess.h b/include/asm-generic/uaccess.h
index d65c311eb128ff0f672f7e514319035e3b2b26e7..bbe4bb438e3934e99748bf9c1a815ace2b0fda7f 100644
--- a/include/asm-generic/uaccess.h
+++ b/include/asm-generic/uaccess.h
@@ -86,11 +86,7 @@ static inline int __access_ok(unsigned long addr, unsigned long size)
static inline int __put_user_fn(size_t size, void __user *ptr, void *x)
{
-#ifdef CONFIG_ARCH_HAS_RAW_COPY_USER
return unlikely(raw_copy_to_user(ptr, x, size)) ? -EFAULT : 0;
-#else
- return unlikely(__copy_to_user(ptr, x, size)) ? -EFAULT : 0;
-#endif
}
#define __put_user_fn(sz, u, k) __put_user_fn(sz, u, k)
@@ -151,11 +147,7 @@ extern int __put_user_bad(void) __attribute__((noreturn));
#ifndef __get_user_fn
static inline int __get_user_fn(size_t size, const void __user *ptr, void *x)
{
-#ifdef CONFIG_ARCH_HAS_RAW_COPY_USER
return unlikely(raw_copy_from_user(x, ptr, size)) ? -EFAULT : 0;
-#else
- return unlikely(__copy_from_user(x, ptr, size)) ? -EFAULT : 0;
-#endif
}
#define __get_user_fn(sz, u, k) __get_user_fn(sz, u, k)
@@ -164,39 +156,6 @@ static inline int __get_user_fn(size_t size, const void __user *ptr, void *x)
extern int __get_user_bad(void) __attribute__((noreturn));
-#ifndef CONFIG_ARCH_HAS_RAW_COPY_USER
-
-#ifndef __copy_from_user_inatomic
-#define __copy_from_user_inatomic __copy_from_user
-#endif
-
-#ifndef __copy_to_user_inatomic
-#define __copy_to_user_inatomic __copy_to_user
-#endif
-
-static inline long copy_from_user(void *to,
- const void __user * from, unsigned long n)
-{
- unsigned long res = n;
- might_fault();
- if (likely(access_ok(VERIFY_READ, from, n)))
- res = __copy_from_user(to, from, n);
- if (unlikely(res))
- memset(to + (n - res), 0, res);
- return res;
-}
-
-static inline long copy_to_user(void __user *to,
- const void *from, unsigned long n)
-{
- might_fault();
- if (access_ok(VERIFY_WRITE, to, n))
- return __copy_to_user(to, from, n);
- else
- return n;
-}
-#endif
-
/*
* Copy a null terminated string from userspace.
*/
diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
index 7fc2104b88bc7731d43e2b6ba8e7d644fff6aea6..e0cbfb09e60f042d09b983ed596d309e1add654d 100644
--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -12,12 +12,10 @@
#include <asm/uaccess.h>
-#ifdef CONFIG_ARCH_HAS_RAW_COPY_USER
/*
* Architectures should provide two primitives (raw_copy_{to,from}_user())
- * select ARCH_HAS_RAW_COPY_FROM_USER and get rid of their private instances
- * of copy_{to,from}_user() and __copy_{to,from}_user{,_inatomic}(). Once
- * all of them switch, this part of linux/uaccess.h will become unconditional.
+ * and get rid of their private instances of copy_{to,from}_user() and
+ * __copy_{to,from}_user{,_inatomic}().
*
* raw_copy_{to,from}_user(to, from, size) should copy up to size bytes and
* return the amount left to copy. They should assume that access_ok() has
@@ -196,7 +194,6 @@ copy_in_user(void __user *to, const void *from, unsigned long n)
return n;
}
#endif
-#endif
static __always_inline void pagefault_disabled_inc(void)
{
diff --git a/lib/Makefile b/lib/Makefile
index 7d875c38917282bdef8ec1825734d04b76ddca94..b47cf97e1e68cba64d9c8931443e4f918608a969 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -41,7 +41,7 @@ obj-y += bcd.o div64.o sort.o parser.o debug_locks.o random32.o \
gcd.o lcm.o list_sort.o uuid.o flex_array.o iov_iter.o clz_ctz.o \
bsearch.o find_bit.o llist.o memweight.o kfifo.o \
percpu-refcount.o percpu_ida.o rhashtable.o reciprocal_div.o \
- once.o refcount.o
+ once.o refcount.o usercopy.o
obj-y += string_helpers.o
obj-$(CONFIG_TEST_STRING_HELPERS) += test-string_helpers.o
obj-y += hexdump.o
@@ -242,5 +242,3 @@ UBSAN_SANITIZE_ubsan.o := n
obj-$(CONFIG_SBITMAP) += sbitmap.o
obj-$(CONFIG_PARMAN) += parman.o
-
-obj-$(CONFIG_ARCH_HAS_RAW_COPY_USER) += usercopy.o