1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_IA64_PGALLOC_H
3 #define _ASM_IA64_PGALLOC_H
6 * This file contains the functions and defines necessary to allocate
9 * This hopefully works with any (fixed) ia-64 page-size, as defined
10 * in <asm/page.h> (currently 8192).
12 * Copyright (C) 1998-2001 Hewlett-Packard Co
13 * David Mosberger-Tang <davidm@hpl.hp.com>
14 * Copyright (C) 2000, Goutham Rao <goutham.rao@intel.com>
18 #include <linux/compiler.h>
20 #include <linux/page-flags.h>
21 #include <linux/threads.h>
23 #include <asm-generic/pgalloc.h>
25 #include <asm/mmu_context.h>
27 static inline pgd_t
*pgd_alloc(struct mm_struct
*mm
)
29 return (pgd_t
*)__get_free_page(GFP_KERNEL
| __GFP_ZERO
);
32 static inline void pgd_free(struct mm_struct
*mm
, pgd_t
*pgd
)
34 free_page((unsigned long)pgd
);
37 #if CONFIG_PGTABLE_LEVELS == 4
39 pgd_populate(struct mm_struct
*mm
, pgd_t
* pgd_entry
, pud_t
* pud
)
41 pgd_val(*pgd_entry
) = __pa(pud
);
44 static inline pud_t
*pud_alloc_one(struct mm_struct
*mm
, unsigned long addr
)
46 return (pud_t
*)__get_free_page(GFP_KERNEL
| __GFP_ZERO
);
49 static inline void pud_free(struct mm_struct
*mm
, pud_t
*pud
)
51 free_page((unsigned long)pud
);
53 #define __pud_free_tlb(tlb, pud, address) pud_free((tlb)->mm, pud)
54 #endif /* CONFIG_PGTABLE_LEVELS == 4 */
57 pud_populate(struct mm_struct
*mm
, pud_t
* pud_entry
, pmd_t
* pmd
)
59 pud_val(*pud_entry
) = __pa(pmd
);
62 static inline pmd_t
*pmd_alloc_one(struct mm_struct
*mm
, unsigned long addr
)
64 return (pmd_t
*)__get_free_page(GFP_KERNEL
| __GFP_ZERO
);
67 static inline void pmd_free(struct mm_struct
*mm
, pmd_t
*pmd
)
69 free_page((unsigned long)pmd
);
72 #define __pmd_free_tlb(tlb, pmd, address) pmd_free((tlb)->mm, pmd)
75 pmd_populate(struct mm_struct
*mm
, pmd_t
* pmd_entry
, pgtable_t pte
)
77 pmd_val(*pmd_entry
) = page_to_phys(pte
);
79 #define pmd_pgtable(pmd) pmd_page(pmd)
82 pmd_populate_kernel(struct mm_struct
*mm
, pmd_t
* pmd_entry
, pte_t
* pte
)
84 pmd_val(*pmd_entry
) = __pa(pte
);
87 #define __pte_free_tlb(tlb, pte, address) pte_free((tlb)->mm, pte)
89 #endif /* _ASM_IA64_PGALLOC_H */