#ifndef _I386_PGALLOC_H #define _I386_PGALLOC_H #include <linux/threads.h> #include <linux/mm.h> /* for struct page */ #ifdef CONFIG_PARAVIRT #include <asm/paravirt.h> #else #define paravirt_alloc_pt(pfn) do { } while (0) #define paravirt_alloc_pd(pfn) do { } while (0) #define paravirt_alloc_pd(pfn) do { } while (0) #define paravirt_alloc_pd_clone(pfn, clonepfn, start, count) do { } while (0) #define paravirt_release_pt(pfn) do { } while (0) #define paravirt_release_pd(pfn) do { } while (0) #endif #define pmd_populate_kernel(mm, pmd, pte) \ do { \ paravirt_alloc_pt(__pa(pte) >> PAGE_SHIFT); \ set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte))); \ } while (0) #define pmd_populate(mm, pmd, pte) \ do { \ paravirt_alloc_pt(page_to_pfn(pte)); \ set_pmd(pmd, __pmd(_PAGE_TABLE + \ ((unsigned long long)page_to_pfn(pte) << \ (unsigned long long) PAGE_SHIFT))); \ } while (0) /* * 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) \ do { \ paravirt_release_pt(page_to_pfn(pte)); \ tlb_remove_page((tlb),(pte)); \ } while (0) #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 #endif /* _I386_PGALLOC_H */