文件操作 - 4level-fixup.h
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文件: /usr/src/kernels/4.18.0-553.124.4.el8_10.x86_64/include/asm-generic/4level-fixup.h
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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _4LEVEL_FIXUP_H #define _4LEVEL_FIXUP_H #define __ARCH_HAS_4LEVEL_HACK #define __PAGETABLE_PUD_FOLDED 1 #define PUD_SHIFT PGDIR_SHIFT #define PUD_SIZE PGDIR_SIZE #define PUD_MASK PGDIR_MASK #define PTRS_PER_PUD 1 #define pud_t pgd_t #define pmd_alloc(mm, pud, address) \ ((unlikely(pgd_none(*(pud))) && __pmd_alloc(mm, pud, address))? \ NULL: pmd_offset(pud, address)) #define pud_offset(pgd, start) (pgd) #define pud_none(pud) 0 #define pud_bad(pud) 0 #define pud_present(pud) 1 #define pud_ERROR(pud) do { } while (0) #define pud_clear(pud) pgd_clear(pud) #define pud_val(pud) pgd_val(pud) #define pud_populate(mm, pud, pmd) pgd_populate(mm, pud, pmd) #define pud_page(pud) pgd_page(pud) #define pud_page_vaddr(pud) pgd_page_vaddr(pud) #undef pud_free_tlb #define pud_free_tlb(tlb, x, addr) do { } while (0) #define pud_free(mm, x) do { } while (0) #define __pud_free_tlb(tlb, x, addr) do { } while (0) #undef pud_addr_end #define pud_addr_end(addr, end) (end) #include <asm-generic/5level-fixup.h> #endif
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