1// SPDX-License-Identifier: GPL-2.0
 2#include <linux/hugetlb.h>
 3#include <linux/err.h>
 4
 5int pud_huge(pud_t pud)
 6{
 7	return pud_leaf(pud);
 8}
 9
10int pmd_huge(pmd_t pmd)
11{
12	return pmd_leaf(pmd);
13}
14
15bool __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
26static __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}
33arch_initcall(gigantic_pages_init);
34#endif