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, 338 deletions

diff --git a/arch/nds32/mm/cacheflush.c b/arch/nds32/mm/cacheflush.c
deleted file mode 100644
index 07aac65d1cab..000000000000
--- a/arch/nds32/mm/cacheflush.c
+++ /dev/null
@@ -1,338 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/pagemap.h>
-#include <linux/module.h>
-#include <asm/cacheflush.h>
-#include <asm/proc-fns.h>
-#include <asm/shmparam.h>
-#include <asm/cache_info.h>
-
-extern struct cache_info L1_cache_info[2];
-
-void flush_icache_range(unsigned long start, unsigned long end)
-{
-	unsigned long line_size, flags;
-	line_size = L1_cache_info[DCACHE].line_size;
-	start = start & ~(line_size - 1);
-	end = (end + line_size - 1) & ~(line_size - 1);
-	local_irq_save(flags);
-	cpu_cache_wbinval_range(start, end, 1);
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(flush_icache_range);
-
-void flush_icache_page(struct vm_area_struct *vma, struct page *page)
-{
-	unsigned long flags;
-	unsigned long kaddr;
-	local_irq_save(flags);
-	kaddr = (unsigned long)kmap_atomic(page);
-	cpu_cache_wbinval_page(kaddr, vma->vm_flags & VM_EXEC);
-	kunmap_atomic((void *)kaddr);
-	local_irq_restore(flags);
-}
-
-void flush_icache_user_page(struct vm_area_struct *vma, struct page *page,
-	                     unsigned long addr, int len)
-{
-	unsigned long kaddr;
-	kaddr = (unsigned long)kmap_atomic(page) + (addr & ~PAGE_MASK);
-	flush_icache_range(kaddr, kaddr + len);
-	kunmap_atomic((void *)kaddr);
-}
-
-void update_mmu_cache(struct vm_area_struct *vma, unsigned long addr,
-		      pte_t * pte)
-{
-	struct page *page;
-	unsigned long pfn = pte_pfn(*pte);
-	unsigned long flags;
-
-	if (!pfn_valid(pfn))
-		return;
-
-	if (vma->vm_mm == current->active_mm) {
-		local_irq_save(flags);
-		__nds32__mtsr_dsb(addr, NDS32_SR_TLB_VPN);
-		__nds32__tlbop_rwr(*pte);
-		__nds32__isb();
-		local_irq_restore(flags);
-	}
-	page = pfn_to_page(pfn);
-
-	if ((test_and_clear_bit(PG_dcache_dirty, &page->flags)) ||
-	    (vma->vm_flags & VM_EXEC)) {
-		unsigned long kaddr;
-		local_irq_save(flags);
-		kaddr = (unsigned long)kmap_atomic(page);
-		cpu_cache_wbinval_page(kaddr, vma->vm_flags & VM_EXEC);
-		kunmap_atomic((void *)kaddr);
-		local_irq_restore(flags);
-	}
-}
-#ifdef CONFIG_CPU_CACHE_ALIASING
-extern pte_t va_present(struct mm_struct *mm, unsigned long addr);
-
-static inline unsigned long aliasing(unsigned long addr, unsigned long page)
-{
-	return ((addr & PAGE_MASK) ^ page) & (SHMLBA - 1);
-}
-
-static inline unsigned long kremap0(unsigned long uaddr, unsigned long pa)
-{
-	unsigned long kaddr, pte;
-
-#define BASE_ADDR0 0xffffc000
-	kaddr = BASE_ADDR0 | (uaddr & L1_cache_info[DCACHE].aliasing_mask);
-	pte = (pa | PAGE_KERNEL);
-	__nds32__mtsr_dsb(kaddr, NDS32_SR_TLB_VPN);
-	__nds32__tlbop_rwlk(pte);
-	__nds32__isb();
-	return kaddr;
-}
-
-static inline void kunmap01(unsigned long kaddr)
-{
-	__nds32__tlbop_unlk(kaddr);
-	__nds32__tlbop_inv(kaddr);
-	__nds32__isb();
-}
-
-static inline unsigned long kremap1(unsigned long uaddr, unsigned long pa)
-{
-	unsigned long kaddr, pte;
-
-#define BASE_ADDR1 0xffff8000
-	kaddr = BASE_ADDR1 | (uaddr & L1_cache_info[DCACHE].aliasing_mask);
-	pte = (pa | PAGE_KERNEL);
-	__nds32__mtsr_dsb(kaddr, NDS32_SR_TLB_VPN);
-	__nds32__tlbop_rwlk(pte);
-	__nds32__isb();
-	return kaddr;
-}
-
-void flush_cache_mm(struct mm_struct *mm)
-{
-	unsigned long flags;
-
-	local_irq_save(flags);
-	cpu_dcache_wbinval_all();
-	cpu_icache_inval_all();
-	local_irq_restore(flags);
-}
-
-void flush_cache_dup_mm(struct mm_struct *mm)
-{
-}
-
-void flush_cache_range(struct vm_area_struct *vma,
-		       unsigned long start, unsigned long end)
-{
-	unsigned long flags;
-
-	if ((end - start) > 8 * PAGE_SIZE) {
-		cpu_dcache_wbinval_all();
-		if (vma->vm_flags & VM_EXEC)
-			cpu_icache_inval_all();
-		return;
-	}
-	local_irq_save(flags);
-	while (start < end) {
-		if (va_present(vma->vm_mm, start))
-			cpu_cache_wbinval_page(start, vma->vm_flags & VM_EXEC);
-		start += PAGE_SIZE;
-	}
-	local_irq_restore(flags);
-	return;
-}
-
-void flush_cache_page(struct vm_area_struct *vma,
-		      unsigned long addr, unsigned long pfn)
-{
-	unsigned long vto, flags;
-
-	local_irq_save(flags);
-	vto = kremap0(addr, pfn << PAGE_SHIFT);
-	cpu_cache_wbinval_page(vto, vma->vm_flags & VM_EXEC);
-	kunmap01(vto);
-	local_irq_restore(flags);
-}
-
-void flush_cache_vmap(unsigned long start, unsigned long end)
-{
-	cpu_dcache_wbinval_all();
-	cpu_icache_inval_all();
-}
-
-void flush_cache_vunmap(unsigned long start, unsigned long end)
-{
-	cpu_dcache_wbinval_all();
-	cpu_icache_inval_all();
-}
-
-void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
-		    struct page *to)
-{
-	cpu_dcache_wbinval_page((unsigned long)vaddr);
-	cpu_icache_inval_page((unsigned long)vaddr);
-	copy_page(vto, vfrom);
-	cpu_dcache_wbinval_page((unsigned long)vto);
-	cpu_icache_inval_page((unsigned long)vto);
-}
-
-void clear_user_page(void *addr, unsigned long vaddr, struct page *page)
-{
-	cpu_dcache_wbinval_page((unsigned long)vaddr);
-	cpu_icache_inval_page((unsigned long)vaddr);
-	clear_page(addr);
-	cpu_dcache_wbinval_page((unsigned long)addr);
-	cpu_icache_inval_page((unsigned long)addr);
-}
-
-void copy_user_highpage(struct page *to, struct page *from,
-			unsigned long vaddr, struct vm_area_struct *vma)
-{
-	unsigned long vto, vfrom, flags, kto, kfrom, pfrom, pto;
-	kto = ((unsigned long)page_address(to) & PAGE_MASK);
-	kfrom = ((unsigned long)page_address(from) & PAGE_MASK);
-	pto = page_to_phys(to);
-	pfrom = page_to_phys(from);
-
-	local_irq_save(flags);
-	if (aliasing(vaddr, (unsigned long)kfrom))
-		cpu_dcache_wb_page((unsigned long)kfrom);
-	vto = kremap0(vaddr, pto);
-	vfrom = kremap1(vaddr, pfrom);
-	copy_page((void *)vto, (void *)vfrom);
-	kunmap01(vfrom);
-	kunmap01(vto);
-	local_irq_restore(flags);
-}
-
-EXPORT_SYMBOL(copy_user_highpage);
-
-void clear_user_highpage(struct page *page, unsigned long vaddr)
-{
-	unsigned long vto, flags, kto;
-
-	kto = ((unsigned long)page_address(page) & PAGE_MASK);
-
-	local_irq_save(flags);
-	if (aliasing(kto, vaddr) && kto != 0) {
-		cpu_dcache_inval_page(kto);
-		cpu_icache_inval_page(kto);
-	}
-	vto = kremap0(vaddr, page_to_phys(page));
-	clear_page((void *)vto);
-	kunmap01(vto);
-	local_irq_restore(flags);
-}
-
-EXPORT_SYMBOL(clear_user_highpage);
-
-void flush_dcache_page(struct page *page)
-{
-	struct address_space *mapping;
-
-	mapping = page_mapping_file(page);
-	if (mapping && !mapping_mapped(mapping))
-		set_bit(PG_dcache_dirty, &page->flags);
-	else {
-		unsigned long kaddr, flags;
-
-		kaddr = (unsigned long)page_address(page);
-		local_irq_save(flags);
-		cpu_dcache_wbinval_page(kaddr);
-		if (mapping) {
-			unsigned long vaddr, kto;
-
-			vaddr = page->index << PAGE_SHIFT;
-			if (aliasing(vaddr, kaddr)) {
-				kto = kremap0(vaddr, page_to_phys(page));
-				cpu_dcache_wbinval_page(kto);
-				kunmap01(kto);
-			}
-		}
-		local_irq_restore(flags);
-	}
-}
-EXPORT_SYMBOL(flush_dcache_page);
-
-void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
-		       unsigned long vaddr, void *dst, void *src, int len)
-{
-	unsigned long line_size, start, end, vto, flags;
-
-	local_irq_save(flags);
-	vto = kremap0(vaddr, page_to_phys(page));
-	dst = (void *)(vto | (vaddr & (PAGE_SIZE - 1)));
-	memcpy(dst, src, len);
-	if (vma->vm_flags & VM_EXEC) {
-		line_size = L1_cache_info[DCACHE].line_size;
-		start = (unsigned long)dst & ~(line_size - 1);
-		end =
-		    ((unsigned long)dst + len + line_size - 1) & ~(line_size -
-								   1);
-		cpu_cache_wbinval_range(start, end, 1);
-	}
-	kunmap01(vto);
-	local_irq_restore(flags);
-}
-
-void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
-			 unsigned long vaddr, void *dst, void *src, int len)
-{
-	unsigned long vto, flags;
-
-	local_irq_save(flags);
-	vto = kremap0(vaddr, page_to_phys(page));
-	src = (void *)(vto | (vaddr & (PAGE_SIZE - 1)));
-	memcpy(dst, src, len);
-	kunmap01(vto);
-	local_irq_restore(flags);
-}
-
-void flush_anon_page(struct vm_area_struct *vma,
-		     struct page *page, unsigned long vaddr)
-{
-	unsigned long kaddr, flags, ktmp;
-	if (!PageAnon(page))
-		return;
-
-	if (vma->vm_mm != current->active_mm)
-		return;
-
-	local_irq_save(flags);
-	if (vma->vm_flags & VM_EXEC)
-		cpu_icache_inval_page(vaddr & PAGE_MASK);
-	kaddr = (unsigned long)page_address(page);
-	if (aliasing(vaddr, kaddr)) {
-		ktmp = kremap0(vaddr, page_to_phys(page));
-		cpu_dcache_wbinval_page(ktmp);
-		kunmap01(ktmp);
-	}
-	local_irq_restore(flags);
-}
-
-void flush_kernel_vmap_range(void *addr, int size)
-{
-	unsigned long flags;
-	local_irq_save(flags);
-	cpu_dcache_wb_range((unsigned long)addr, (unsigned long)addr +  size);
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(flush_kernel_vmap_range);
-
-void invalidate_kernel_vmap_range(void *addr, int size)
-{
-	unsigned long flags;
-	local_irq_save(flags);
-	cpu_dcache_inval_range((unsigned long)addr, (unsigned long)addr + size);
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(invalidate_kernel_vmap_range);
-#endif