1 files changed, 0 insertions, 96 deletions
diff --git a/arch/nds32/mm/mm-nds32.c b/arch/nds32/mm/mm-nds32.c
deleted file mode 100644
index f2778f2b39f6..000000000000
--- a/arch/nds32/mm/mm-nds32.c
+++ /dev/null
@@ -1,96 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/init_task.h>
-
-#define __HAVE_ARCH_PGD_FREE
-#include <asm/pgalloc.h>
-
-#define FIRST_KERNEL_PGD_NR	(USER_PTRS_PER_PGD)
-
-/*
- * need to get a page for level 1
- */
-
-pgd_t *pgd_alloc(struct mm_struct *mm)
-{
-	pgd_t *new_pgd, *init_pgd;
-	int i;
-
-	new_pgd = (pgd_t *) __get_free_pages(GFP_KERNEL, 0);
-	if (!new_pgd)
-		return NULL;
-	for (i = 0; i < PTRS_PER_PGD; i++) {
-		(*new_pgd) = 1;
-		new_pgd++;
-	}
-	new_pgd -= PTRS_PER_PGD;
-
-	init_pgd = pgd_offset_k(0);
-
-	memcpy(new_pgd + FIRST_KERNEL_PGD_NR, init_pgd + FIRST_KERNEL_PGD_NR,
-	       (PTRS_PER_PGD - FIRST_KERNEL_PGD_NR) * sizeof(pgd_t));
-
-	cpu_dcache_wb_range((unsigned long)new_pgd,
-			    (unsigned long)new_pgd +
-			    PTRS_PER_PGD * sizeof(pgd_t));
-	inc_lruvec_page_state(virt_to_page((unsigned long *)new_pgd),
-			      NR_PAGETABLE);
-
-	return new_pgd;
-}
-
-void pgd_free(struct mm_struct *mm, pgd_t * pgd)
-{
-	pmd_t *pmd;
-	struct page *pte;
-
-	if (!pgd)
-		return;
-
-	pmd = (pmd_t *) pgd;
-	if (pmd_none(*pmd))
-		goto free;
-	if (pmd_bad(*pmd)) {
-		pmd_ERROR(*pmd);
-		pmd_clear(pmd);
-		goto free;
-	}
-
-	pte = pmd_page(*pmd);
-	pmd_clear(pmd);
-	dec_lruvec_page_state(virt_to_page((unsigned long *)pgd), NR_PAGETABLE);
-	pte_free(mm, pte);
-	mm_dec_nr_ptes(mm);
-	pmd_free(mm, pmd);
-free:
-	free_pages((unsigned long)pgd, 0);
-}
-
-/*
- * In order to soft-boot, we need to insert a 1:1 mapping in place of
- * the user-mode pages.  This will then ensure that we have predictable
- * results when turning the mmu off
- */
-void setup_mm_for_reboot(char mode)
-{
-	unsigned long pmdval;
-	pgd_t *pgd;
-	p4d_t *p4d;
-	pud_t *pud;
-	pmd_t *pmd;
-	int i;
-
-	if (current->mm && current->mm->pgd)
-		pgd = current->mm->pgd;
-	else
-		pgd = init_mm.pgd;
-
-	for (i = 0; i < USER_PTRS_PER_PGD; i++) {
-		pmdval = (i << PGDIR_SHIFT);
-		p4d = p4d_offset(pgd, i << PGDIR_SHIFT);
-		pud = pud_offset(p4d, i << PGDIR_SHIFT);
-		pmd = pmd_offset(pud + i, i << PGDIR_SHIFT);
-		set_pmd(pmd, __pmd(pmdval));
-	}
-}