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| author |   Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2015-04-14 15:46:14 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-14 16:49:02 -0700 |
| commit | 982333683385343d8d2db9a1df69c98406f42687 (patch) | |
| tree | 2ce273cf325bcad64d032090344778fb0267f59a /arch/x86/mm | |
| parent | um: expose number of page table levels (diff) | |
| download | linux-dev-982333683385343d8d2db9a1df69c98406f42687.tar.xz linux-dev-982333683385343d8d2db9a1df69c98406f42687.zip | |
x86: expose number of page table levels on Kconfig level
We would want to use number of page table level to define mm_struct.
Let's expose it as CONFIG_PGTABLE_LEVELS.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/pgtable.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index 5a7e5252c878..b28edfecbdfe 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -58,7 +58,7 @@ void ___pte_free_tlb(struct mmu_gather *tlb, struct page *pte) tlb_remove_page(tlb, pte); } -#if PAGETABLE_LEVELS > 2 +#if CONFIG_PGTABLE_LEVELS > 2 void ___pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd) { struct page *page = virt_to_page(pmd); @@ -74,14 +74,14 @@ void ___pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd) tlb_remove_page(tlb, page); } -#if PAGETABLE_LEVELS > 3 +#if CONFIG_PGTABLE_LEVELS > 3 void ___pud_free_tlb(struct mmu_gather *tlb, pud_t *pud) { paravirt_release_pud(__pa(pud) >> PAGE_SHIFT); tlb_remove_page(tlb, virt_to_page(pud)); } -#endif /* PAGETABLE_LEVELS > 3 */ -#endif /* PAGETABLE_LEVELS > 2 */ +#endif /* CONFIG_PGTABLE_LEVELS > 3 */ +#endif /* CONFIG_PGTABLE_LEVELS > 2 */ static inline void pgd_list_add(pgd_t *pgd) { @@ -117,9 +117,9 @@ static void pgd_ctor(struct mm_struct *mm, pgd_t *pgd) /* If the pgd points to a shared pagetable level (either the ptes in non-PAE, or shared PMD in PAE), then just copy the references from swapper_pg_dir. */ - if (PAGETABLE_LEVELS == 2 || - (PAGETABLE_LEVELS == 3 && SHARED_KERNEL_PMD) || - PAGETABLE_LEVELS == 4) { + if (CONFIG_PGTABLE_LEVELS == 2 || + (CONFIG_PGTABLE_LEVELS == 3 && SHARED_KERNEL_PMD) || + CONFIG_PGTABLE_LEVELS == 4) { clone_pgd_range(pgd + KERNEL_PGD_BOUNDARY, swapper_pg_dir + KERNEL_PGD_BOUNDARY, KERNEL_PGD_PTRS); |