1 /* 2 * arch/arm/include/asm/hugetlb.h 3 * 4 * Copyright (C) 2012 ARM Ltd. 5 * 6 * Based on arch/x86/include/asm/hugetlb.h 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 #ifndef _ASM_ARM_HUGETLB_H 23 #define _ASM_ARM_HUGETLB_H 24 25 #include <asm/page.h> 26 #include <asm-generic/hugetlb.h> 27 28 #include <asm/hugetlb-3level.h> 29 30 static inline int is_hugepage_only_range(struct mm_struct *mm, 31 unsigned long addr, unsigned long len) 32 { 33 return 0; 34 } 35 36 static inline int prepare_hugepage_range(struct file *file, 37 unsigned long addr, unsigned long len) 38 { 39 struct hstate *h = hstate_file(file); 40 if (len & ~huge_page_mask(h)) 41 return -EINVAL; 42 if (addr & ~huge_page_mask(h)) 43 return -EINVAL; 44 return 0; 45 } 46 47 static inline pte_t huge_pte_wrprotect(pte_t pte) 48 { 49 return pte_wrprotect(pte); 50 } 51 52 static inline void arch_clear_hugepage_flags(struct page *page) 53 { 54 clear_bit(PG_dcache_clean, &page->flags); 55 } 56 57 #endif /* _ASM_ARM_HUGETLB_H */ 58