1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _5LEVEL_FIXUP_H 3 #define _5LEVEL_FIXUP_H 4 5 #define __ARCH_HAS_5LEVEL_HACK 6 #define __PAGETABLE_P4D_FOLDED 1 7 8 #define P4D_SHIFT PGDIR_SHIFT 9 #define P4D_SIZE PGDIR_SIZE 10 #define P4D_MASK PGDIR_MASK 11 #define MAX_PTRS_PER_P4D 1 12 #define PTRS_PER_P4D 1 13 14 #define p4d_t pgd_t 15 16 #define pud_alloc(mm, p4d, address) \ 17 ((unlikely(pgd_none(*(p4d))) && __pud_alloc(mm, p4d, address)) ? \ 18 NULL : pud_offset(p4d, address)) 19 20 #define p4d_alloc(mm, pgd, address) (pgd) 21 #define p4d_offset(pgd, start) (pgd) 22 #define p4d_none(p4d) 0 23 #define p4d_bad(p4d) 0 24 #define p4d_present(p4d) 1 25 #define p4d_ERROR(p4d) do { } while (0) 26 #define p4d_clear(p4d) pgd_clear(p4d) 27 #define p4d_val(p4d) pgd_val(p4d) 28 #define p4d_populate(mm, p4d, pud) pgd_populate(mm, p4d, pud) 29 #define p4d_page(p4d) pgd_page(p4d) 30 #define p4d_page_vaddr(p4d) pgd_page_vaddr(p4d) 31 32 #define __p4d(x) __pgd(x) 33 #define set_p4d(p4dp, p4d) set_pgd(p4dp, p4d) 34 35 #undef p4d_free_tlb 36 #define p4d_free_tlb(tlb, x, addr) do { } while (0) 37 #define p4d_free(mm, x) do { } while (0) 38 #define __p4d_free_tlb(tlb, x, addr) do { } while (0) 39 40 #undef p4d_addr_end 41 #define p4d_addr_end(addr, end) (end) 42 43 #endif 44