diff options
Diffstat (limited to 'arch/x86/mm/pgtable.c')
| -rw-r--r-- | arch/x86/mm/pgtable.c | 77 |
1 files changed, 18 insertions, 59 deletions
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index 5745a354a241..cec321fb74f2 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -12,55 +12,20 @@ phys_addr_t physical_mask __ro_after_init = (1ULL << __PHYSICAL_MASK_SHIFT) - 1; EXPORT_SYMBOL(physical_mask); #endif -#ifdef CONFIG_HIGHPTE -#define PGTABLE_HIGHMEM __GFP_HIGHMEM -#else -#define PGTABLE_HIGHMEM 0 -#endif - -#ifndef CONFIG_PARAVIRT -static inline -void paravirt_tlb_remove_table(struct mmu_gather *tlb, void *table) -{ - tlb_remove_page(tlb, table); -} -#endif - -gfp_t __userpte_alloc_gfp = GFP_PGTABLE_USER | PGTABLE_HIGHMEM; - pgtable_t pte_alloc_one(struct mm_struct *mm) { - return __pte_alloc_one(mm, __userpte_alloc_gfp); + return __pte_alloc_one(mm, GFP_PGTABLE_USER); } -static int __init setup_userpte(char *arg) -{ - if (!arg) - return -EINVAL; - - /* - * "userpte=nohigh" disables allocation of user pagetables in - * high memory. - */ - if (strcmp(arg, "nohigh") == 0) - __userpte_alloc_gfp &= ~__GFP_HIGHMEM; - else - return -EINVAL; - return 0; -} -early_param("userpte", setup_userpte); - void ___pte_free_tlb(struct mmu_gather *tlb, struct page *pte) { - pagetable_pte_dtor(page_ptdesc(pte)); paravirt_release_pte(page_to_pfn(pte)); - paravirt_tlb_remove_table(tlb, pte); + tlb_remove_table(tlb, page_ptdesc(pte)); } #if CONFIG_PGTABLE_LEVELS > 2 void ___pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd) { - struct ptdesc *ptdesc = virt_to_ptdesc(pmd); paravirt_release_pmd(__pa(pmd) >> PAGE_SHIFT); /* * NOTE! For PAE, any changes to the top page-directory-pointer-table @@ -69,25 +34,21 @@ void ___pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd) #ifdef CONFIG_X86_PAE tlb->need_flush_all = 1; #endif - pagetable_pmd_dtor(ptdesc); - paravirt_tlb_remove_table(tlb, ptdesc_page(ptdesc)); + tlb_remove_table(tlb, virt_to_ptdesc(pmd)); } #if CONFIG_PGTABLE_LEVELS > 3 void ___pud_free_tlb(struct mmu_gather *tlb, pud_t *pud) { - struct ptdesc *ptdesc = virt_to_ptdesc(pud); - - pagetable_pud_dtor(ptdesc); paravirt_release_pud(__pa(pud) >> PAGE_SHIFT); - paravirt_tlb_remove_table(tlb, virt_to_page(pud)); + tlb_remove_table(tlb, virt_to_ptdesc(pud)); } #if CONFIG_PGTABLE_LEVELS > 4 void ___p4d_free_tlb(struct mmu_gather *tlb, p4d_t *p4d) { paravirt_release_p4d(__pa(p4d) >> PAGE_SHIFT); - paravirt_tlb_remove_table(tlb, virt_to_page(p4d)); + tlb_remove_table(tlb, virt_to_ptdesc(p4d)); } #endif /* CONFIG_PGTABLE_LEVELS > 4 */ #endif /* CONFIG_PGTABLE_LEVELS > 3 */ @@ -222,7 +183,7 @@ static void free_pmds(struct mm_struct *mm, pmd_t *pmds[], int count) if (pmds[i]) { ptdesc = virt_to_ptdesc(pmds[i]); - pagetable_pmd_dtor(ptdesc); + pagetable_dtor(ptdesc); pagetable_free(ptdesc); mm_dec_nr_pmds(mm); } @@ -392,15 +353,14 @@ void __init pgtable_cache_init(void) SLAB_PANIC, NULL); } -static inline pgd_t *_pgd_alloc(void) +static inline pgd_t *_pgd_alloc(struct mm_struct *mm) { /* * If no SHARED_KERNEL_PMD, PAE kernel is running as a Xen domain. * We allocate one page for pgd. */ if (!SHARED_KERNEL_PMD) - return (pgd_t *)__get_free_pages(GFP_PGTABLE_USER, - PGD_ALLOCATION_ORDER); + return __pgd_alloc(mm, PGD_ALLOCATION_ORDER); /* * Now PAE kernel is not running as a Xen domain. We can allocate @@ -409,24 +369,23 @@ static inline pgd_t *_pgd_alloc(void) return kmem_cache_alloc(pgd_cache, GFP_PGTABLE_USER); } -static inline void _pgd_free(pgd_t *pgd) +static inline void _pgd_free(struct mm_struct *mm, pgd_t *pgd) { if (!SHARED_KERNEL_PMD) - free_pages((unsigned long)pgd, PGD_ALLOCATION_ORDER); + __pgd_free(mm, pgd); else kmem_cache_free(pgd_cache, pgd); } #else -static inline pgd_t *_pgd_alloc(void) +static inline pgd_t *_pgd_alloc(struct mm_struct *mm) { - return (pgd_t *)__get_free_pages(GFP_PGTABLE_USER, - PGD_ALLOCATION_ORDER); + return __pgd_alloc(mm, PGD_ALLOCATION_ORDER); } -static inline void _pgd_free(pgd_t *pgd) +static inline void _pgd_free(struct mm_struct *mm, pgd_t *pgd) { - free_pages((unsigned long)pgd, PGD_ALLOCATION_ORDER); + __pgd_free(mm, pgd); } #endif /* CONFIG_X86_PAE */ @@ -436,7 +395,7 @@ pgd_t *pgd_alloc(struct mm_struct *mm) pmd_t *u_pmds[MAX_PREALLOCATED_USER_PMDS]; pmd_t *pmds[MAX_PREALLOCATED_PMDS]; - pgd = _pgd_alloc(); + pgd = _pgd_alloc(mm); if (pgd == NULL) goto out; @@ -479,7 +438,7 @@ out_free_pmds: if (sizeof(pmds) != 0) free_pmds(mm, pmds, PREALLOCATED_PMDS); out_free_pgd: - _pgd_free(pgd); + _pgd_free(mm, pgd); out: return NULL; } @@ -489,7 +448,7 @@ void pgd_free(struct mm_struct *mm, pgd_t *pgd) pgd_mop_up_pmds(mm, pgd); pgd_dtor(pgd); paravirt_pgd_free(mm, pgd); - _pgd_free(pgd); + _pgd_free(mm, pgd); } /* @@ -856,7 +815,7 @@ int pud_free_pmd_page(pud_t *pud, unsigned long addr) free_page((unsigned long)pmd_sv); - pagetable_pmd_dtor(virt_to_ptdesc(pmd)); + pagetable_dtor(virt_to_ptdesc(pmd)); free_page((unsigned long)pmd); return 1; |