diff options
| -rw-r--r-- | arch/x86/mm/pgtable.c | 18 | ||||
| -rw-r--r-- | include/asm-x86/pgalloc_32.h | 17 |
2 files changed, 19 insertions, 16 deletions
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index d526b46ae188..ed16b7704a3c 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -200,6 +200,24 @@ static int pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd) return 1; } + +void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd) +{ + paravirt_alloc_pd(mm, __pa(pmd) >> PAGE_SHIFT); + + /* Note: almost everything apart from _PAGE_PRESENT is + reserved at the pmd (PDPT) level. */ + set_pud(pudp, __pud(__pa(pmd) | _PAGE_PRESENT)); + + /* + * According to Intel App note "TLBs, Paging-Structure Caches, + * and Their Invalidation", April 2007, document 317080-001, + * section 8.1: in PAE mode we explicitly have to flush the + * TLB via cr3 if the top-level pgd is changed... + */ + if (mm == current->active_mm) + write_cr3(read_cr3()); +} #else /* !CONFIG_X86_PAE */ /* No need to prepopulate any pagetable entries in non-PAE modes. */ static int pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd) diff --git a/include/asm-x86/pgalloc_32.h b/include/asm-x86/pgalloc_32.h index d60edb14f85e..aaa322cb4b6e 100644 --- a/include/asm-x86/pgalloc_32.h +++ b/include/asm-x86/pgalloc_32.h @@ -62,23 +62,8 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) extern void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd); -static inline void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd) -{ - paravirt_alloc_pd(mm, __pa(pmd) >> PAGE_SHIFT); - - /* Note: almost everything apart from _PAGE_PRESENT is - reserved at the pmd (PDPT) level. */ - set_pud(pudp, __pud(__pa(pmd) | _PAGE_PRESENT)); +extern void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd); - /* - * According to Intel App note "TLBs, Paging-Structure Caches, - * and Their Invalidation", April 2007, document 317080-001, - * section 8.1: in PAE mode we explicitly have to flush the - * TLB via cr3 if the top-level pgd is changed... - */ - if (mm == current->active_mm) - write_cr3(read_cr3()); -} #endif /* CONFIG_X86_PAE */ #endif /* _I386_PGALLOC_H */ |
