/* SPDX-License-Identifier: GPL-2.0-only *//* * Based on arch/arm/include/asm/pgalloc.h * * Copyright (C) 2000-2001 Russell King * Copyright (C) 2012 ARM Ltd. */#ifndef __ASM_PGALLOC_H#define __ASM_PGALLOC_H #include <asm/pgtable-hwdef.h>#include <asm/processor.h>#include <asm/cacheflush.h>#include <asm/tlbflush.h> #define __HAVE_ARCH_PGD_FREE#define __HAVE_ARCH_PUD_FREE#include <asm-generic/pgalloc.h> #define PGD_SIZE	(PTRS_PER_PGD * sizeof(pgd_t)) #if CONFIG_PGTABLE_LEVELS > 2 static inline void __pud_populate(pud_t *pudp, phys_addr_t pmdp, pudval_t prot){	set_pud(pudp, __pud(__phys_to_pud_val(pmdp) | prot));} static inline void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmdp){	pudval_t pudval = PUD_TYPE_TABLE | PUD_TABLE_AF; 	pudval |= (mm == &init_mm) ? PUD_TABLE_UXN : PUD_TABLE_PXN;	__pud_populate(pudp, __pa(pmdp), pudval);}#elsestatic inline void __pud_populate(pud_t *pudp, phys_addr_t pmdp, pudval_t prot){	BUILD_BUG();}#endif	/* CONFIG_PGTABLE_LEVELS > 2 */ #if CONFIG_PGTABLE_LEVELS > 3 static inline void __p4d_populate(p4d_t *p4dp, phys_addr_t pudp, p4dval_t prot){	if (pgtable_l4_enabled())		set_p4d(p4dp, __p4d(__phys_to_p4d_val(pudp) | prot));} static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4dp, pud_t *pudp){	p4dval_t p4dval = P4D_TYPE_TABLE | P4D_TABLE_AF; 	p4dval |= (mm == &init_mm) ? P4D_TABLE_UXN : P4D_TABLE_PXN;	__p4d_populate(p4dp, __pa(pudp), p4dval);} static inline void pud_free(struct mm_struct *mm, pud_t *pud){	if (!pgtable_l4_enabled())		return;	__pud_free(mm, pud);}#elsestatic inline void __p4d_populate(p4d_t *p4dp, phys_addr_t pudp, p4dval_t prot){	BUILD_BUG();}#endif	/* CONFIG_PGTABLE_LEVELS > 3 */ #if CONFIG_PGTABLE_LEVELS > 4 static inline void __pgd_populate(pgd_t *pgdp, phys_addr_t p4dp, pgdval_t prot){	if (pgtable_l5_enabled())		set_pgd(pgdp, __pgd(__phys_to_pgd_val(p4dp) | prot));} static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgdp, p4d_t *p4dp){	pgdval_t pgdval = PGD_TYPE_TABLE | PGD_TABLE_AF; 	pgdval |= (mm == &init_mm) ? PGD_TABLE_UXN : PGD_TABLE_PXN;	__pgd_populate(pgdp, __pa(p4dp), pgdval);} #elsestatic inline void __pgd_populate(pgd_t *pgdp, phys_addr_t p4dp, pgdval_t prot){	BUILD_BUG();}#endif	/* CONFIG_PGTABLE_LEVELS > 4 */ extern pgd_t *pgd_alloc(struct mm_struct *mm);extern void pgd_free(struct mm_struct *mm, pgd_t *pgdp); static inline void __pmd_populate(pmd_t *pmdp, phys_addr_t ptep,				  pmdval_t prot){	set_pmd(pmdp, __pmd(__phys_to_pmd_val(ptep) | prot));} /* * Populate the pmdp entry with a pointer to the pte.  This pmd is part * of the mm address space. */static inline voidpmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep){	VM_BUG_ON(mm && mm != &init_mm);	__pmd_populate(pmdp, __pa(ptep),		       PMD_TYPE_TABLE | PMD_TABLE_AF | PMD_TABLE_UXN);} static inline voidpmd_populate(struct mm_struct *mm, pmd_t *pmdp, pgtable_t ptep){	VM_BUG_ON(mm == &init_mm);	__pmd_populate(pmdp, page_to_phys(ptep),		       PMD_TYPE_TABLE | PMD_TABLE_AF | PMD_TABLE_PXN);} #endif