Merge tag 'asm-generic-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic updates from Arnd Bergmann:
 "There are three sets of updates for 5.18 in the asm-generic tree:

   - The set_fs()/get_fs() infrastructure gets removed for good.

     This was already gone from all major architectures, but now we can
     finally remove it everywhere, which loses some particularly tricky
     and error-prone code. There is a small merge conflict against a
     parisc cleanup, the solution is to use their new version.

   - The nds32 architecture ends its tenure in the Linux kernel.

     The hardware is still used and the code is in reasonable shape, but
     the mainline port is not actively maintained any more, as all
     remaining users are thought to run vendor kernels that would never
     be updated to a future release.

   - A series from Masahiro Yamada cleans up some of the uapi header
     files to pass the compile-time checks"

* tag 'asm-generic-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (27 commits)
  nds32: Remove the architecture
  uaccess: remove CONFIG_SET_FS
  ia64: remove CONFIG_SET_FS support
  sh: remove CONFIG_SET_FS support
  sparc64: remove CONFIG_SET_FS support
  lib/test_lockup: fix kernel pointer check for separate address spaces
  uaccess: generalize access_ok()
  uaccess: fix type mismatch warnings from access_ok()
  arm64: simplify access_ok()
  m68k: fix access_ok for coldfire
  MIPS: use simpler access_ok()
  MIPS: Handle address errors for accesses above CPU max virtual user address
  uaccess: add generic __{get,put}_kernel_nofault
  nios2: drop access_ok() check from __put_user()
  x86: use more conventional access_ok() definition
  x86: remove __range_not_ok()
  sparc64: add __{get,put}_kernel_nofault()
  nds32: fix access_ok() checks in get/put_user
  uaccess: fix nios2 and microblaze get_user_8()
  sparc64: fix building assembly files
  ...

4 files changed, 0 insertions, 26 deletions

diff --git a/arch/csky/include/asm/processor.h b/arch/csky/include/asm/processor.h
index 817dd60ff152..688c7548b559 100644
--- a/arch/csky/include/asm/processor.h
+++ b/arch/csky/include/asm/processor.h
@@ -4,7 +4,6 @@
 #define __ASM_CSKY_PROCESSOR_H
 
 #include <linux/bitops.h>
-#include <asm/segment.h>
 #include <asm/ptrace.h>
 #include <asm/current.h>
 #include <asm/cache.h>
@@ -59,7 +58,6 @@ struct thread_struct {
  */
 #define start_thread(_regs, _pc, _usp)					\
 do {									\
-	set_fs(USER_DS); /* reads from user space */			\
 	(_regs)->pc = (_pc);						\
 	(_regs)->regs[1] = 0; /* ABIV1 is R7, uClibc_main rtdl arg */	\
 	(_regs)->regs[2] = 0;						\
diff --git a/arch/csky/include/asm/segment.h b/arch/csky/include/asm/segment.h
deleted file mode 100644
index 5bc1cc62b87f..000000000000
--- a/arch/csky/include/asm/segment.h
+++ /dev/null
@@ -1,10 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-
-#ifndef __ASM_CSKY_SEGMENT_H
-#define __ASM_CSKY_SEGMENT_H
-
-typedef struct {
-	unsigned long seg;
-} mm_segment_t;
-
-#endif /* __ASM_CSKY_SEGMENT_H */
diff --git a/arch/csky/include/asm/thread_info.h b/arch/csky/include/asm/thread_info.h
index 8c349a8f904d..b5ed788f0c68 100644
--- a/arch/csky/include/asm/thread_info.h
+++ b/arch/csky/include/asm/thread_info.h
@@ -16,7 +16,6 @@ struct thread_info {
 	unsigned long		flags;
 	int			preempt_count;
 	unsigned long		tp_value;
-	mm_segment_t		addr_limit;
 	struct restart_block	restart_block;
 	struct pt_regs		*regs;
 	unsigned int		cpu;
@@ -26,7 +25,6 @@ struct thread_info {
 {						\
 	.task		= &tsk,			\
 	.preempt_count  = INIT_PREEMPT_COUNT,	\
-	.addr_limit     = KERNEL_DS,		\
 	.cpu		= 0,			\
 	.restart_block = {			\
 		.fn = do_no_restart_syscall,	\
diff --git a/arch/csky/include/asm/uaccess.h b/arch/csky/include/asm/uaccess.h
index c40f06ee8d3e..2e927c21d8a1 100644
--- a/arch/csky/include/asm/uaccess.h
+++ b/arch/csky/include/asm/uaccess.h
@@ -3,17 +3,6 @@
 #ifndef __ASM_CSKY_UACCESS_H
 #define __ASM_CSKY_UACCESS_H
 
-#define user_addr_max() \
-	(uaccess_kernel() ? KERNEL_DS.seg : get_fs().seg)
-
-static inline int __access_ok(unsigned long addr, unsigned long size)
-{
-	unsigned long limit = current_thread_info()->addr_limit.seg;
-
-	return ((addr < limit) && ((addr + size) < limit));
-}
-#define __access_ok __access_ok
-
 /*
  * __put_user_fn
  */
@@ -209,7 +198,6 @@ unsigned long raw_copy_to_user(void *to, const void *from, unsigned long n);
 unsigned long __clear_user(void __user *to, unsigned long n);
 #define __clear_user __clear_user
 
-#include <asm/segment.h>
 #include <asm-generic/uaccess.h>
 
 #endif /* __ASM_CSKY_UACCESS_H */