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1355e2a6 CM |
1 | /* |
2 | * arch/arm/mm/hugetlbpage.c | |
3 | * | |
4 | * Copyright (C) 2012 ARM Ltd. | |
5 | * | |
6 | * Based on arch/x86/include/asm/hugetlb.h and Bill Carson's patches | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | ||
22 | #include <linux/init.h> | |
23 | #include <linux/fs.h> | |
24 | #include <linux/mm.h> | |
25 | #include <linux/hugetlb.h> | |
26 | #include <linux/pagemap.h> | |
27 | #include <linux/err.h> | |
28 | #include <linux/sysctl.h> | |
29 | #include <asm/mman.h> | |
30 | #include <asm/tlb.h> | |
31 | #include <asm/tlbflush.h> | |
32 | #include <asm/pgalloc.h> | |
33 | ||
34 | /* | |
35 | * On ARM, huge pages are backed by pmd's rather than pte's, so we do a lot | |
36 | * of type casting from pmd_t * to pte_t *. | |
37 | */ | |
38 | ||
1355e2a6 CM |
39 | int pud_huge(pud_t pud) |
40 | { | |
41 | return 0; | |
42 | } | |
43 | ||
1355e2a6 CM |
44 | int pmd_huge(pmd_t pmd) |
45 | { | |
46 | return pmd_val(pmd) && !(pmd_val(pmd) & PMD_TABLE_BIT); | |
47 | } |