diff options
Diffstat (limited to 'include/asm-generic/5level-fixup.h')
| -rw-r--r-- | include/asm-generic/5level-fixup.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/include/asm-generic/5level-fixup.h b/include/asm-generic/5level-fixup.h new file mode 100644 index 000000000..73474bb52 --- /dev/null +++ b/include/asm-generic/5level-fixup.h @@ -0,0 +1,43 @@ +/* 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) +#define p4d_none(p4d) 0 +#define p4d_bad(p4d) 0 +#define p4d_present(p4d) 1 +#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_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) +#define __p4d_free_tlb(tlb, x, addr) do { } while (0) + +#undef p4d_addr_end +#define p4d_addr_end(addr, end) (end) + +#endif |