text: /* SPDX-License-Identifier: GPL-2.0-or-later */
  #ifndef _ASM_POWERPC_PGALLOC_64_H
  #define _ASM_POWERPC_PGALLOC_64_H
  /*
   */
  
  #include <linux/slab.h>
  #include <linux/cpumask.h>
  #include <linux/percpu.h>
  
  struct vmemmap_backing {
  	struct vmemmap_backing *list;
  	unsigned long phys;
  	unsigned long virt_addr;
  };
  extern struct vmemmap_backing *vmemmap_list;
  
  #define p4d_populate(MM, P4D, PUD)	p4d_set(P4D, (unsigned long)PUD)
  
  static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
  {
  	return kmem_cache_alloc(PGT_CACHE(PUD_INDEX_SIZE),
  			pgtable_gfp_flags(mm, GFP_KERNEL));
  }
  
  static inline void pud_free(struct mm_struct *mm, pud_t *pud)
  {
  	kmem_cache_free(PGT_CACHE(PUD_INDEX_SIZE), pud);
  }
  
  static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
  {
  	pud_set(pud, (unsigned long)pmd);
  }
  
  static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
  				       pte_t *pte)
  {
  	pmd_set(pmd, (unsigned long)pte);
  }
  
  static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
  				pgtable_t pte_page)
  {
  	pmd_set(pmd, (unsigned long)pte_page);
  }
  
  static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
  {
  	return kmem_cache_alloc(PGT_CACHE(PMD_CACHE_INDEX),
  			pgtable_gfp_flags(mm, GFP_KERNEL));
  }
  
  static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
  {
  	kmem_cache_free(PGT_CACHE(PMD_CACHE_INDEX), pmd);
  }
  
  #define __pmd_free_tlb(tlb, pmd, addr)		      \
  	pgtable_free_tlb(tlb, pmd, PMD_CACHE_INDEX)
  #define __pud_free_tlb(tlb, pud, addr)		      \
  	pgtable_free_tlb(tlb, pud, PUD_INDEX_SIZE)
  
  #endif /* _ASM_POWERPC_PGALLOC_64_H */
  