1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/hugetlb.h>
3 #include <linux/err.h>
4 
pud_huge(pud_t pud)5 int pud_huge(pud_t pud)
6 {
7 	return pud_leaf(pud);
8 }
9 
pmd_huge(pmd_t pmd)10 int pmd_huge(pmd_t pmd)
11 {
12 	return pmd_leaf(pmd);
13 }
14 
arch_hugetlb_valid_size(unsigned long size)15 bool __init arch_hugetlb_valid_size(unsigned long size)
16 {
17 	if (size == HPAGE_SIZE)
18 		return true;
19 	else if (IS_ENABLED(CONFIG_64BIT) && size == PUD_SIZE)
20 		return true;
21 	else
22 		return false;
23 }
24 
25 #ifdef CONFIG_CONTIG_ALLOC
gigantic_pages_init(void)26 static __init int gigantic_pages_init(void)
27 {
28 	/* With CONTIG_ALLOC, we can allocate gigantic pages at runtime */
29 	if (IS_ENABLED(CONFIG_64BIT))
30 		hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
31 	return 0;
32 }
33 arch_initcall(gigantic_pages_init);
34 #endif
35