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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _M68KNOMMU_PGTABLE_H #define _M68KNOMMU_PGTABLE_H #include <asm-generic/pgtable-nopud.h> /* * (C) Copyright 2000-2002, Greg Ungerer <gerg@snapgear.com> */ #include <linux/slab.h> #include <asm/processor.h> #include <asm/page.h> #include <asm/io.h> /* * Trivial page table functions. */ #define pgd_present(pgd) (1) #define pgd_none(pgd) (0) #define pgd_bad(pgd) (0) #define pgd_clear(pgdp) #define pmd_offset(a, b) ((void *)0) #define PAGE_NONE __pgprot(0) #define PAGE_SHARED __pgprot(0) #define PAGE_COPY __pgprot(0) #define PAGE_READONLY __pgprot(0) #define PAGE_KERNEL __pgprot(0) #define swapper_pg_dir ((pgd_t *) 0) /* * ZERO_PAGE is a global shared page that is always zero: used * for zero-mapped memory areas etc.. */ extern void *empty_zero_page; #define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page)) /* * All 32bit addresses are effectively valid for vmalloc... * Sort of meaningless for non-VM targets. */ #define VMALLOC_START 0 #define VMALLOC_END 0xffffffff #define KMAP_START 0 #define KMAP_END 0xffffffff #endif /* _M68KNOMMU_PGTABLE_H */