| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _5LEVEL_FIXUP_H |
| #define _5LEVEL_FIXUP_H |
| |
| #define __ARCH_HAS_5LEVEL_HACK |
| #define __PAGETABLE_P4D_FOLDED 1 |
| |
| #define P4D_SHIFT PGDIR_SHIFT |
| #define P4D_SIZE PGDIR_SIZE |
| #define P4D_MASK PGDIR_MASK |
| #define MAX_PTRS_PER_P4D 1 |
| #define PTRS_PER_P4D 1 |
| |
| #define p4d_t pgd_t |
| |
| #define pud_alloc(mm, p4d, address) \ |
| ((unlikely(pgd_none(*(p4d))) && __pud_alloc(mm, p4d, address)) ? \ |
| NULL : pud_offset(p4d, address)) |
| |
| #define p4d_alloc(mm, pgd, address) (pgd) |
| #define p4d_offset(pgd, start) (pgd) |
| |
| #ifndef __ASSEMBLY__ |
| static inline int p4d_none(p4d_t p4d) |
| { |
| return 0; |
| } |
| |
| static inline int p4d_bad(p4d_t p4d) |
| { |
| return 0; |
| } |
| |
| static inline int p4d_present(p4d_t p4d) |
| { |
| return 1; |
| } |
| #endif |
| |
| #define p4d_ERROR(p4d) do { } while (0) |
| #define p4d_clear(p4d) pgd_clear(p4d) |
| #define p4d_val(p4d) pgd_val(p4d) |
| #define p4d_populate(mm, p4d, pud) pgd_populate(mm, p4d, pud) |
| #define p4d_populate_safe(mm, p4d, pud) pgd_populate(mm, p4d, pud) |
| #define p4d_page(p4d) pgd_page(p4d) |
| #define p4d_page_vaddr(p4d) pgd_page_vaddr(p4d) |
| |
| #define __p4d(x) __pgd(x) |
| #define set_p4d(p4dp, p4d) set_pgd(p4dp, p4d) |
| |
| #undef p4d_free_tlb |
| #define p4d_free_tlb(tlb, x, addr) do { } while (0) |
| #define p4d_free(mm, x) do { } while (0) |
| |
| #undef p4d_addr_end |
| #define p4d_addr_end(addr, end) (end) |
| |
| #endif |
