/* SPDX-License-Identifier: GPL-2.0-only *//* * include/asm-xtensa/pgalloc.h * * Copyright (C) 2001-2007 Tensilica Inc. */ #ifndef _XTENSA_PGALLOC_H#define _XTENSA_PGALLOC_H #ifdef CONFIG_MMU#include <linux/highmem.h>#include <linux/slab.h> #define __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL#define __HAVE_ARCH_PTE_ALLOC_ONE#include <asm-generic/pgalloc.h> /* * Allocating and freeing a pmd is trivial: the 1-entry pmd is * inside the pgd, so has no extra memory associated with it. */ #define pmd_populate_kernel(mm, pmdp, ptep)				     \	(pmd_val(*(pmdp)) = ((unsigned long)ptep))#define pmd_populate(mm, pmdp, page)					     \	(pmd_val(*(pmdp)) = ((unsigned long)page_to_virt(page)))#define pmd_pgtable(pmd) pmd_page(pmd) static inline pgd_t*pgd_alloc(struct mm_struct *mm){	return (pgd_t*) __get_free_pages(GFP_KERNEL | __GFP_ZERO, PGD_ORDER);} static inline void ptes_clear(pte_t *ptep){	int i; 	for (i = 0; i < PTRS_PER_PTE; i++)		pte_clear(NULL, 0, ptep + i);} static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm){	pte_t *ptep; 	ptep = (pte_t *)__pte_alloc_one_kernel(mm);	if (!ptep)		return NULL;	ptes_clear(ptep);	return ptep;} static inline pgtable_t pte_alloc_one(struct mm_struct *mm){	struct page *page; 	page = __pte_alloc_one(mm, GFP_PGTABLE_USER);	if (!page)		return NULL;	ptes_clear(page_address(page));	return page;} #define pmd_pgtable(pmd) pmd_page(pmd)#endif /* CONFIG_MMU */ #endif /* _XTENSA_PGALLOC_H */