/usr/arm-linux-androideabi/include/asm-generic/4level-fixup.h is in gcc-arm-linux-androideabi 0.20130705.1-0ubuntu9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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****************************************************************************
***
*** This header was automatically generated from a Linux kernel header
*** of the same name, to make information necessary for userspace to
*** call into the kernel available to libc. It contains only constants,
*** structures, and macros generated from the original header, and thus,
*** contains no copyrightable information.
***
*** To edit the content of this header, modify the corresponding
*** source file (e.g. under external/kernel-headers/original/) then
*** run bionic/libc/kernel/tools/update_all.py
***
*** Any manual change here will be lost the next time this script will
*** be run. You've been warned!
***
****************************************************************************
****************************************************************************/
#ifndef _4LEVEL_FIXUP_H
#define _4LEVEL_FIXUP_H
#define __ARCH_HAS_4LEVEL_HACK
#define __PAGETABLE_PUD_FOLDED
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#define PUD_SIZE PGDIR_SIZE
#define PUD_MASK PGDIR_MASK
#define PTRS_PER_PUD 1
#define pud_t pgd_t
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#define pmd_alloc(mm, pud, address) ((unlikely(pgd_none(*(pud))) && __pmd_alloc(mm, pud, address))? NULL: pmd_offset(pud, address))
#define pud_alloc(mm, pgd, address) (pgd)
#define pud_offset(pgd, start) (pgd)
#define pud_none(pud) 0
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#define pud_bad(pud) 0
#define pud_present(pud) 1
#define pud_ERROR(pud) do { } while (0)
#define pud_clear(pud) pgd_clear(pud)
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#undef pud_free_tlb
#define pud_free_tlb(tlb, x) do { } while (0)
#define pud_free(x) do { } while (0)
#define __pud_free_tlb(tlb, x) do { } while (0)
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
#undef pud_addr_end
#define pud_addr_end(addr, end) (end)
#endif
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