forked from Minki/linux
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
|
#ifndef _I386_PGALLOC_H
|
||
|
|
#define _I386_PGALLOC_H
|
||
|
|
|
||
|
|
#include <asm/fixmap.h>
|
||
|
|
#include <linux/threads.h>
|
||
|
|
#include <linux/mm.h> /* for struct page */
|
||
|
|
|
||
|
|
#define pmd_populate_kernel(mm, pmd, pte) \
|
||
|
|
set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
|
||
|
|
|
||
|
|
#define pmd_populate(mm, pmd, pte) \
|
||
|
|
set_pmd(pmd, __pmd(_PAGE_TABLE + \
|
||
|
|
((unsigned long long)page_to_pfn(pte) << \
|
||
|
|
(unsigned long long) PAGE_SHIFT)))
|
||
|
|
/*
|
||
|
|
* Allocate and free page tables.
|
||
|
|
*/
|
||
|
|
extern pgd_t *pgd_alloc(struct mm_struct *);
|
||
|
|
extern void pgd_free(pgd_t *pgd);
|
||
|
|
|
||
|
|
extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
|
||
|
|
extern struct page *pte_alloc_one(struct mm_struct *, unsigned long);
|
||
|
|
|
||
|
|
static inline void pte_free_kernel(pte_t *pte)
|
||
|
|
{
|
||
|
|
free_page((unsigned long)pte);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void pte_free(struct page *pte)
|
||
|
|
{
|
||
|
|
__free_page(pte);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
|
||
|
|
|
||
|
|
#ifdef CONFIG_X86_PAE
|
||
|
|
/*
|
||
|
|
* In the PAE case we free the pmds as part of the pgd.
|
||
|
|
*/
|
||
|
|
#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
|
||
|
|
#define pmd_free(x) do { } while (0)
|
||
|
|
#define __pmd_free_tlb(tlb,x) do { } while (0)
|
||
|
|
#define pud_populate(mm, pmd, pte) BUG()
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define check_pgt_cache() do { } while (0)
|
||
|
|
|
||
|
|
#endif /* _I386_PGALLOC_H */
|