| /* |
| * arch/arm/mm/hugetlbpage.c |
| * |
| * Copyright (C) 2012 ARM Ltd. |
| * |
| * Based on arch/x86/include/asm/hugetlb.h and Bill Carson's patches |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/fs.h> |
| #include <linux/mm.h> |
| #include <linux/hugetlb.h> |
| #include <linux/pagemap.h> |
| #include <linux/err.h> |
| #include <linux/sysctl.h> |
| #include <asm/mman.h> |
| #include <asm/tlb.h> |
| #include <asm/tlbflush.h> |
| #include <asm/pgalloc.h> |
| |
| /* |
| * On ARM, huge pages are backed by pmd's rather than pte's, so we do a lot |
| * of type casting from pmd_t * to pte_t *. |
| */ |
| |
| int pud_huge(pud_t pud) |
| { |
| return 0; |
| } |
| |
| int pmd_huge(pmd_t pmd) |
| { |
| return pmd_val(pmd) && !(pmd_val(pmd) & PMD_TABLE_BIT); |
| } |