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
  ...

1 files changed, 0 insertions, 278 deletions

diff --git a/arch/nds32/kernel/ftrace.c b/arch/nds32/kernel/ftrace.c
deleted file mode 100644
index 711bc8cd186d..000000000000
--- a/arch/nds32/kernel/ftrace.c
+++ /dev/null
@@ -1,278 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-#include <linux/ftrace.h>
-#include <linux/uaccess.h>
-#include <asm/cacheflush.h>
-
-#ifndef CONFIG_DYNAMIC_FTRACE
-extern void (*ftrace_trace_function)(unsigned long, unsigned long,
-				     struct ftrace_ops*, struct ftrace_regs*);
-extern void ftrace_graph_caller(void);
-
-noinline void __naked ftrace_stub(unsigned long ip, unsigned long parent_ip,
-				  struct ftrace_ops *op, struct ftrace_regs *fregs)
-{
-	__asm__ ("");  /* avoid to optimize as pure function */
-}
-
-noinline void _mcount(unsigned long parent_ip)
-{
-	/* save all state by the compiler prologue */
-
-	unsigned long ip = (unsigned long)__builtin_return_address(0);
-
-	if (ftrace_trace_function != ftrace_stub)
-		ftrace_trace_function(ip - MCOUNT_INSN_SIZE, parent_ip,
-				      NULL, NULL);
-
-#ifdef CONFIG_FUNCTION_GRAPH_TRACER
-	if (ftrace_graph_return != (trace_func_graph_ret_t)ftrace_stub
-	    || ftrace_graph_entry != ftrace_graph_entry_stub)
-		ftrace_graph_caller();
-#endif
-
-	/* restore all state by the compiler epilogue */
-}
-EXPORT_SYMBOL(_mcount);
-
-#else /* CONFIG_DYNAMIC_FTRACE */
-
-noinline void __naked ftrace_stub(unsigned long ip, unsigned long parent_ip,
-				  struct ftrace_ops *op, struct ftrace_regs *fregs)
-{
-	__asm__ ("");  /* avoid to optimize as pure function */
-}
-
-noinline void __naked _mcount(unsigned long parent_ip)
-{
-	__asm__ ("");  /* avoid to optimize as pure function */
-}
-EXPORT_SYMBOL(_mcount);
-
-#define XSTR(s) STR(s)
-#define STR(s) #s
-void _ftrace_caller(unsigned long parent_ip)
-{
-	/* save all state needed by the compiler prologue */
-
-	/*
-	 * prepare arguments for real tracing function
-	 * first  arg : __builtin_return_address(0) - MCOUNT_INSN_SIZE
-	 * second arg : parent_ip
-	 */
-	__asm__ __volatile__ (
-		"move $r1, %0				   \n\t"
-		"addi $r0, %1, #-" XSTR(MCOUNT_INSN_SIZE) "\n\t"
-		:
-		: "r" (parent_ip), "r" (__builtin_return_address(0)));
-
-	/* a placeholder for the call to a real tracing function */
-	__asm__ __volatile__ (
-		"ftrace_call:		\n\t"
-		"nop			\n\t"
-		"nop			\n\t"
-		"nop			\n\t");
-
-#ifdef CONFIG_FUNCTION_GRAPH_TRACER
-	/* a placeholder for the call to ftrace_graph_caller */
-	__asm__ __volatile__ (
-		"ftrace_graph_call:	\n\t"
-		"nop			\n\t"
-		"nop			\n\t"
-		"nop			\n\t");
-#endif
-	/* restore all state needed by the compiler epilogue */
-}
-
-static unsigned long gen_sethi_insn(unsigned long addr)
-{
-	unsigned long opcode = 0x46000000;
-	unsigned long imm = addr >> 12;
-	unsigned long rt_num = 0xf << 20;
-
-	return ENDIAN_CONVERT(opcode | rt_num | imm);
-}
-
-static unsigned long gen_ori_insn(unsigned long addr)
-{
-	unsigned long opcode = 0x58000000;
-	unsigned long imm = addr & 0x0000fff;
-	unsigned long rt_num = 0xf << 20;
-	unsigned long ra_num = 0xf << 15;
-
-	return ENDIAN_CONVERT(opcode | rt_num | ra_num | imm);
-}
-
-static unsigned long gen_jral_insn(unsigned long addr)
-{
-	unsigned long opcode = 0x4a000001;
-	unsigned long rt_num = 0x1e << 20;
-	unsigned long rb_num = 0xf << 10;
-
-	return ENDIAN_CONVERT(opcode | rt_num | rb_num);
-}
-
-static void ftrace_gen_call_insn(unsigned long *call_insns,
-				 unsigned long addr)
-{
-	call_insns[0] = gen_sethi_insn(addr); /* sethi $r15, imm20u       */
-	call_insns[1] = gen_ori_insn(addr);   /* ori   $r15, $r15, imm15u */
-	call_insns[2] = gen_jral_insn(addr);  /* jral  $lp,  $r15         */
-}
-
-static int __ftrace_modify_code(unsigned long pc, unsigned long *old_insn,
-				unsigned long *new_insn, bool validate)
-{
-	unsigned long orig_insn[3];
-
-	if (validate) {
-		if (copy_from_kernel_nofault(orig_insn, (void *)pc,
-				MCOUNT_INSN_SIZE))
-			return -EFAULT;
-		if (memcmp(orig_insn, old_insn, MCOUNT_INSN_SIZE))
-			return -EINVAL;
-	}
-
-	if (copy_to_kernel_nofault((void *)pc, new_insn, MCOUNT_INSN_SIZE))
-		return -EPERM;
-
-	return 0;
-}
-
-static int ftrace_modify_code(unsigned long pc, unsigned long *old_insn,
-			      unsigned long *new_insn, bool validate)
-{
-	int ret;
-
-	ret = __ftrace_modify_code(pc, old_insn, new_insn, validate);
-	if (ret)
-		return ret;
-
-	flush_icache_range(pc, pc + MCOUNT_INSN_SIZE);
-
-	return ret;
-}
-
-int ftrace_update_ftrace_func(ftrace_func_t func)
-{
-	unsigned long pc = (unsigned long)&ftrace_call;
-	unsigned long old_insn[3] = {INSN_NOP, INSN_NOP, INSN_NOP};
-	unsigned long new_insn[3] = {INSN_NOP, INSN_NOP, INSN_NOP};
-
-	if (func != ftrace_stub)
-		ftrace_gen_call_insn(new_insn, (unsigned long)func);
-
-	return ftrace_modify_code(pc, old_insn, new_insn, false);
-}
-
-int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
-{
-	unsigned long pc = rec->ip;
-	unsigned long nop_insn[3] = {INSN_NOP, INSN_NOP, INSN_NOP};
-	unsigned long call_insn[3] = {INSN_NOP, INSN_NOP, INSN_NOP};
-
-	ftrace_gen_call_insn(call_insn, addr);
-
-	return ftrace_modify_code(pc, nop_insn, call_insn, true);
-}
-
-int ftrace_make_nop(struct module *mod, struct dyn_ftrace *rec,
-		    unsigned long addr)
-{
-	unsigned long pc = rec->ip;
-	unsigned long nop_insn[3] = {INSN_NOP, INSN_NOP, INSN_NOP};
-	unsigned long call_insn[3] = {INSN_NOP, INSN_NOP, INSN_NOP};
-
-	ftrace_gen_call_insn(call_insn, addr);
-
-	return ftrace_modify_code(pc, call_insn, nop_insn, true);
-}
-#endif /* CONFIG_DYNAMIC_FTRACE */
-
-#ifdef CONFIG_FUNCTION_GRAPH_TRACER
-void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr,
-			   unsigned long frame_pointer)
-{
-	unsigned long return_hooker = (unsigned long)&return_to_handler;
-	unsigned long old;
-
-	if (unlikely(atomic_read(&current->tracing_graph_pause)))
-		return;
-
-	old = *parent;
-
-	if (!function_graph_enter(old, self_addr, frame_pointer, NULL))
-		*parent = return_hooker;
-}
-
-noinline void ftrace_graph_caller(void)
-{
-	unsigned long *parent_ip =
-		(unsigned long *)(__builtin_frame_address(2) - 4);
-
-	unsigned long selfpc =
-		(unsigned long)(__builtin_return_address(1) - MCOUNT_INSN_SIZE);
-
-	unsigned long frame_pointer =
-		(unsigned long)__builtin_frame_address(3);
-
-	prepare_ftrace_return(parent_ip, selfpc, frame_pointer);
-}
-
-extern unsigned long ftrace_return_to_handler(unsigned long frame_pointer);
-void __naked return_to_handler(void)
-{
-	__asm__ __volatile__ (
-		/* save state needed by the ABI     */
-		"smw.adm $r0,[$sp],$r1,#0x0  \n\t"
-
-		/* get original return address      */
-		"move $r0, $fp               \n\t"
-		"bal ftrace_return_to_handler\n\t"
-		"move $lp, $r0               \n\t"
-
-		/* restore state needed by the ABI  */
-		"lmw.bim $r0,[$sp],$r1,#0x0  \n\t");
-}
-
-#ifdef CONFIG_DYNAMIC_FTRACE
-extern unsigned long ftrace_graph_call;
-
-static int ftrace_modify_graph_caller(bool enable)
-{
-	unsigned long pc = (unsigned long)&ftrace_graph_call;
-	unsigned long nop_insn[3] = {INSN_NOP, INSN_NOP, INSN_NOP};
-	unsigned long call_insn[3] = {INSN_NOP, INSN_NOP, INSN_NOP};
-
-	ftrace_gen_call_insn(call_insn, (unsigned long)ftrace_graph_caller);
-
-	if (enable)
-		return ftrace_modify_code(pc, nop_insn, call_insn, true);
-	else
-		return ftrace_modify_code(pc, call_insn, nop_insn, true);
-}
-
-int ftrace_enable_ftrace_graph_caller(void)
-{
-	return ftrace_modify_graph_caller(true);
-}
-
-int ftrace_disable_ftrace_graph_caller(void)
-{
-	return ftrace_modify_graph_caller(false);
-}
-#endif /* CONFIG_DYNAMIC_FTRACE */
-
-#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
-
-
-#ifdef CONFIG_TRACE_IRQFLAGS
-noinline void __trace_hardirqs_off(void)
-{
-	trace_hardirqs_off();
-}
-noinline void __trace_hardirqs_on(void)
-{
-	trace_hardirqs_on();
-}
-#endif /* CONFIG_TRACE_IRQFLAGS */