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, 231 deletions

diff --git a/arch/nds32/kernel/vdso.c b/arch/nds32/kernel/vdso.c
deleted file mode 100644
index e16009a07971..000000000000
--- a/arch/nds32/kernel/vdso.c
+++ /dev/null
@@ -1,231 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2012 ARM Limited
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/cache.h>
-#include <linux/clocksource.h>
-#include <linux/elf.h>
-#include <linux/err.h>
-#include <linux/errno.h>
-#include <linux/gfp.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <linux/signal.h>
-#include <linux/slab.h>
-#include <linux/timekeeper_internal.h>
-#include <linux/vmalloc.h>
-#include <linux/random.h>
-
-#include <asm/cacheflush.h>
-#include <asm/vdso.h>
-#include <asm/vdso_datapage.h>
-#include <asm/vdso_timer_info.h>
-#include <asm/cache_info.h>
-extern struct cache_info L1_cache_info[2];
-extern char vdso_start[], vdso_end[];
-static unsigned long vdso_pages __ro_after_init;
-static unsigned long timer_mapping_base;
-
-struct timer_info_t timer_info = {
-	.cycle_count_down = true,
-	.mapping_base = EMPTY_TIMER_MAPPING,
-	.cycle_count_reg_offset = EMPTY_REG_OFFSET
-};
-/*
- * The vDSO data page.
- */
-static struct page *no_pages[] = { NULL };
-
-static union {
-	struct vdso_data data;
-	u8 page[PAGE_SIZE];
-} vdso_data_store __page_aligned_data;
-struct vdso_data *vdso_data = &vdso_data_store.data;
-static struct vm_special_mapping vdso_spec[2] __ro_after_init = {
-	{
-	 .name = "[vvar]",
-	 .pages = no_pages,
-	 },
-	{
-	 .name = "[vdso]",
-	 },
-};
-
-static void get_timer_node_info(void)
-{
-	timer_mapping_base = timer_info.mapping_base;
-	vdso_data->cycle_count_offset =
-		timer_info.cycle_count_reg_offset;
-	vdso_data->cycle_count_down =
-		timer_info.cycle_count_down;
-}
-
-static int __init vdso_init(void)
-{
-	int i;
-	struct page **vdso_pagelist;
-
-	if (memcmp(vdso_start, "\177ELF", 4)) {
-		pr_err("vDSO is not a valid ELF object!\n");
-		return -EINVAL;
-	}
-	/* Creat a timer io mapping to get clock cycles counter */
-	get_timer_node_info();
-
-	vdso_pages = (vdso_end - vdso_start) >> PAGE_SHIFT;
-	pr_info("vdso: %ld pages (%ld code @ %p, %ld data @ %p)\n",
-		vdso_pages + 1, vdso_pages, vdso_start, 1L, vdso_data);
-
-	/* Allocate the vDSO pagelist */
-	vdso_pagelist = kcalloc(vdso_pages, sizeof(struct page *), GFP_KERNEL);
-	if (vdso_pagelist == NULL)
-		return -ENOMEM;
-
-	for (i = 0; i < vdso_pages; i++)
-		vdso_pagelist[i] = virt_to_page(vdso_start + i * PAGE_SIZE);
-	vdso_spec[1].pages = &vdso_pagelist[0];
-
-	return 0;
-}
-
-arch_initcall(vdso_init);
-
-unsigned long inline vdso_random_addr(unsigned long vdso_mapping_len)
-{
-	unsigned long start = current->mm->mmap_base, end, offset, addr;
-	start = PAGE_ALIGN(start);
-
-	/* Round the lowest possible end address up to a PMD boundary. */
-	end = (start + vdso_mapping_len + PMD_SIZE - 1) & PMD_MASK;
-	if (end >= TASK_SIZE)
-		end = TASK_SIZE;
-	end -= vdso_mapping_len;
-
-	if (end > start) {
-		offset = get_random_int() % (((end - start) >> PAGE_SHIFT) + 1);
-		addr = start + (offset << PAGE_SHIFT);
-	} else {
-		addr = start;
-	}
-	return addr;
-}
-
-int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
-{
-	struct mm_struct *mm = current->mm;
-	unsigned long vdso_base, vdso_text_len, vdso_mapping_len;
-	struct vm_area_struct *vma;
-	unsigned long addr = 0;
-	pgprot_t prot;
-	int ret, vvar_page_num = 2;
-
-	vdso_text_len = vdso_pages << PAGE_SHIFT;
-
-	if(timer_mapping_base == EMPTY_VALUE)
-		vvar_page_num = 1;
-	/* Be sure to map the data page */
-	vdso_mapping_len = vdso_text_len + vvar_page_num * PAGE_SIZE;
-#ifdef CONFIG_CPU_CACHE_ALIASING
-	vdso_mapping_len += L1_cache_info[DCACHE].aliasing_num - 1;
-#endif
-
-	if (mmap_write_lock_killable(mm))
-		return -EINTR;
-
-	addr = vdso_random_addr(vdso_mapping_len);
-	vdso_base = get_unmapped_area(NULL, addr, vdso_mapping_len, 0, 0);
-	if (IS_ERR_VALUE(vdso_base)) {
-		ret = vdso_base;
-		goto up_fail;
-	}
-
-#ifdef CONFIG_CPU_CACHE_ALIASING
-	{
-		unsigned int aliasing_mask =
-		    L1_cache_info[DCACHE].aliasing_mask;
-		unsigned int page_colour_ofs;
-		page_colour_ofs = ((unsigned int)vdso_data & aliasing_mask) -
-		    (vdso_base & aliasing_mask);
-		vdso_base += page_colour_ofs & aliasing_mask;
-	}
-#endif
-
-	vma = _install_special_mapping(mm, vdso_base, vvar_page_num * PAGE_SIZE,
-				       VM_READ | VM_MAYREAD, &vdso_spec[0]);
-	if (IS_ERR(vma)) {
-		ret = PTR_ERR(vma);
-		goto up_fail;
-	}
-
-	/*Map vdata to user space */
-	ret = io_remap_pfn_range(vma, vdso_base,
-				 virt_to_phys(vdso_data) >> PAGE_SHIFT,
-				 PAGE_SIZE, vma->vm_page_prot);
-	if (ret)
-		goto up_fail;
-
-	/*Map timer to user space */
-	vdso_base += PAGE_SIZE;
-	prot = __pgprot(_PAGE_V | _PAGE_M_UR_KR | _PAGE_D |  _PAGE_C_DEV);
-	ret = io_remap_pfn_range(vma, vdso_base, timer_mapping_base >> PAGE_SHIFT,
-				 PAGE_SIZE, prot);
-	if (ret)
-		goto up_fail;
-
-	/*Map vdso to user space */
-	vdso_base += PAGE_SIZE;
-	mm->context.vdso = (void *)vdso_base;
-	vma = _install_special_mapping(mm, vdso_base, vdso_text_len,
-				       VM_READ | VM_EXEC |
-				       VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC,
-				       &vdso_spec[1]);
-	if (IS_ERR(vma)) {
-		ret = PTR_ERR(vma);
-		goto up_fail;
-	}
-
-	mmap_write_unlock(mm);
-	return 0;
-
-up_fail:
-	mm->context.vdso = NULL;
-	mmap_write_unlock(mm);
-	return ret;
-}
-
-static void vdso_write_begin(struct vdso_data *vdata)
-{
-	++vdso_data->seq_count;
-	smp_wmb();		/* Pairs with smp_rmb in vdso_read_retry */
-}
-
-static void vdso_write_end(struct vdso_data *vdata)
-{
-	smp_wmb();		/* Pairs with smp_rmb in vdso_read_begin */
-	++vdso_data->seq_count;
-}
-
-void update_vsyscall(struct timekeeper *tk)
-{
-	vdso_write_begin(vdso_data);
-	vdso_data->cs_mask = tk->tkr_mono.mask;
-	vdso_data->cs_mult = tk->tkr_mono.mult;
-	vdso_data->cs_shift = tk->tkr_mono.shift;
-	vdso_data->cs_cycle_last = tk->tkr_mono.cycle_last;
-	vdso_data->wtm_clock_sec = tk->wall_to_monotonic.tv_sec;
-	vdso_data->wtm_clock_nsec = tk->wall_to_monotonic.tv_nsec;
-	vdso_data->xtime_clock_sec = tk->xtime_sec;
-	vdso_data->xtime_clock_nsec = tk->tkr_mono.xtime_nsec;
-	vdso_data->xtime_coarse_sec = tk->xtime_sec;
-	vdso_data->xtime_coarse_nsec = tk->tkr_mono.xtime_nsec >>
-	    tk->tkr_mono.shift;
-	vdso_data->hrtimer_res = hrtimer_resolution;
-	vdso_write_end(vdso_data);
-}
-
-void update_vsyscall_tz(void)
-{
-	vdso_data->tz_minuteswest = sys_tz.tz_minuteswest;
-	vdso_data->tz_dsttime = sys_tz.tz_dsttime;
-}