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