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Revert "uaccess: add infrastructure for kernel builds with set_fs()"

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This reverts commit 5e6e9852d6.

Bug: 171770067
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I81d56855a2492cc8bc97e47702dcec1c408603f4
This commit is contained in:
Greg Kroah-Hartman 2020-10-27 10:28:07 +01:00
parent 8532066623
commit e47ed07310
26 changed files with 0 additions and 45 deletions
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3
arch/Kconfig
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@ -24,9 +24,6 @@ config KEXEC_ELF
config HAVE_IMA_KEXEC
bool
config SET_FS
bool
config HOTPLUG_SMT
bool

1
arch/alpha/Kconfig
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@ -39,7 +39,6 @@ config ALPHA
select OLD_SIGSUSPEND
select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
select MMU_GATHER_NO_RANGE
select SET_FS
help
The Alpha is a 64-bit general-purpose processor designed and
marketed by the Digital Equipment Corporation of blessed memory,

1
arch/arc/Kconfig
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@ -48,7 +48,6 @@ config ARC
select PCI_SYSCALL if PCI
select PERF_USE_VMALLOC if ARC_CACHE_VIPT_ALIASING
select HAVE_ARCH_JUMP_LABEL if ISA_ARCV2 && !CPU_ENDIAN_BE32
select SET_FS
config ARCH_HAS_CACHE_LINE_SIZE
def_bool y

1
arch/arm/Kconfig
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@ -120,7 +120,6 @@ config ARM
select PCI_SYSCALL if PCI
select PERF_USE_VMALLOC
select RTC_LIB
select SET_FS
select SYS_SUPPORTS_APM_EMULATION
# Above selects are sorted alphabetically; please add new ones
# according to that. Thanks.

1
arch/arm64/Kconfig
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@ -194,7 +194,6 @@ config ARM64
select PCI_SYSCALL if PCI
select POWER_RESET
select POWER_SUPPLY
select SET_FS
select SPARSE_IRQ
select SWIOTLB
select SYSCTL_EXCEPTION_TRACE

1
arch/c6x/Kconfig
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@ -22,7 +22,6 @@ config C6X
select GENERIC_CLOCKEVENTS
select MODULES_USE_ELF_RELA
select MMU_GATHER_NO_RANGE if MMU
select SET_FS
config MMU
def_bool n

1
arch/csky/Kconfig
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@ -78,7 +78,6 @@ config CSKY
select PCI_DOMAINS_GENERIC if PCI
select PCI_SYSCALL if PCI
select PCI_MSI if PCI
select SET_FS
config LOCKDEP_SUPPORT
def_bool y

1
arch/h8300/Kconfig
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@ -25,7 +25,6 @@ config H8300
select HAVE_ARCH_KGDB
select HAVE_ARCH_HASH
select CPU_NO_EFFICIENT_FFS
select SET_FS
select UACCESS_MEMCPY
config CPU_BIG_ENDIAN

1
arch/hexagon/Kconfig
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@ -31,7 +31,6 @@ config HEXAGON
select GENERIC_CLOCKEVENTS_BROADCAST
select MODULES_USE_ELF_RELA
select GENERIC_CPU_DEVICES
select SET_FS
help
Qualcomm Hexagon is a processor architecture designed for high
performance and low power across a wide variety of applications.

1
arch/ia64/Kconfig
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@ -56,7 +56,6 @@ config IA64
select NEED_SG_DMA_LENGTH
select NUMA if !FLATMEM
select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
select SET_FS
default y
help
The Itanium Processor Family is Intel's 64-bit successor to

1
arch/m68k/Kconfig
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@ -31,7 +31,6 @@ config M68K
select NO_DMA if !MMU && !COLDFIRE
select OLD_SIGACTION
select OLD_SIGSUSPEND3
select SET_FS
select UACCESS_MEMCPY if !MMU
select VIRT_TO_BUS

1
arch/microblaze/Kconfig
View File

@ -47,7 +47,6 @@ config MICROBLAZE
select CPU_NO_EFFICIENT_FFS
select MMU_GATHER_NO_RANGE if MMU
select SPARSE_IRQ
select SET_FS
# Endianness selection
choice

1
arch/mips/Kconfig
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@ -88,7 +88,6 @@ config MIPS
select PERF_USE_VMALLOC
select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
select RTC_LIB
select SET_FS
select SYSCTL_EXCEPTION_TRACE
select VIRT_TO_BUS

1
arch/nds32/Kconfig
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@ -48,7 +48,6 @@ config NDS32
select HAVE_FUNCTION_GRAPH_TRACER
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_DYNAMIC_FTRACE
select SET_FS
help
Andes(nds32) Linux support.

1
arch/nios2/Kconfig
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@ -27,7 +27,6 @@ config NIOS2
select USB_ARCH_HAS_HCD if USB_SUPPORT
select CPU_NO_EFFICIENT_FFS
select MMU_GATHER_NO_RANGE if MMU
select SET_FS
config GENERIC_CSUM
def_bool y

1
arch/openrisc/Kconfig
View File

@ -39,7 +39,6 @@ config OPENRISC
select ARCH_WANT_FRAME_POINTERS
select GENERIC_IRQ_MULTI_HANDLER
select MMU_GATHER_NO_RANGE if MMU
select SET_FS
config CPU_BIG_ENDIAN
def_bool y

1
arch/parisc/Kconfig
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@ -63,7 +63,6 @@ config PARISC
select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
select HAVE_KPROBES_ON_FTRACE
select HAVE_DYNAMIC_FTRACE_WITH_REGS
select SET_FS
help
The PA-RISC microprocessor is designed by Hewlett-Packard and used

1
arch/powerpc/Kconfig
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@ -253,7 +253,6 @@ config PPC
select PCI_SYSCALL if PCI
select PPC_DAWR if PPC64
select RTC_LIB
select SET_FS
select SPARSE_IRQ
select SYSCTL_EXCEPTION_TRACE
select THREAD_INFO_IN_TASK

1
arch/riscv/Kconfig
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@ -88,7 +88,6 @@ config RISCV
select SPARSE_IRQ
select SYSCTL_EXCEPTION_TRACE
select THREAD_INFO_IN_TASK
select SET_FS
config ARCH_MMAP_RND_BITS_MIN
default 18 if 64BIT

1
arch/s390/Kconfig
View File

@ -191,7 +191,6 @@ config S390
select PCI_DOMAINS if PCI
select PCI_MSI if PCI
select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
select SET_FS
select SPARSE_IRQ
select SYSCTL_EXCEPTION_TRACE
select THREAD_INFO_IN_TASK

1
arch/sh/Kconfig
View File

@ -71,7 +71,6 @@ config SUPERH
select PERF_EVENTS
select PERF_USE_VMALLOC
select RTC_LIB
select SET_FS
select SPARSE_IRQ
help
The SuperH is a RISC processor targeted for use in embedded systems

1
arch/sparc/Kconfig
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@ -51,7 +51,6 @@ config SPARC
select LOCKDEP_SMALL if LOCKDEP
select NEED_DMA_MAP_STATE
select NEED_SG_DMA_LENGTH
select SET_FS
config SPARC32
def_bool !64BIT

1
arch/um/Kconfig
View File

@ -19,7 +19,6 @@ config UML
select GENERIC_CPU_DEVICES
select GENERIC_CLOCKEVENTS
select HAVE_GCC_PLUGINS
select SET_FS
select TTY # Needed for line.c
config MMU

1
arch/x86/Kconfig
View File

@ -240,7 +240,6 @@ config X86
select HAVE_ARCH_KCSAN if X86_64
select X86_FEATURE_NAMES if PROC_FS
select PROC_PID_ARCH_STATUS if PROC_FS
select SET_FS
imply IMA_SECURE_AND_OR_TRUSTED_BOOT if EFI
config INSTRUCTION_DECODER

1
arch/xtensa/Kconfig
View File

@ -41,7 +41,6 @@ config XTENSA
select IRQ_DOMAIN
select MODULES_USE_ELF_RELA
select PERF_USE_VMALLOC
select SET_FS
select VIRT_TO_BUS
help
Xtensa processors are 32-bit RISC machines designed by Tensilica

18
include/linux/uaccess.h
View File

@ -10,7 +10,6 @@
#include <asm/uaccess.h>
#ifdef CONFIG_SET_FS
/*
* Force the uaccess routines to be wired up for actual userspace access,
* overriding any possible set_fs(KERNEL_DS) still lingering around. Undone
@ -28,23 +27,6 @@ static inline void force_uaccess_end(mm_segment_t oldfs)
{
set_fs(oldfs);
}
#else /* CONFIG_SET_FS */
typedef struct {
/* empty dummy */
} mm_segment_t;
#define uaccess_kernel() (false)
#define user_addr_max() (TASK_SIZE_MAX)
static inline mm_segment_t force_uaccess_begin(void)
{
return (mm_segment_t) { };
}
static inline void force_uaccess_end(mm_segment_t oldfs)
{
}
#endif /* CONFIG_SET_FS */
/*
* Architectures should provide two primitives (raw_copy_{to,from}_user())