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Diffstat (limited to 'arch/um/include/asm/pgalloc.h')
| -rw-r--r-- | arch/um/include/asm/pgalloc.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/um/include/asm/pgalloc.h b/arch/um/include/asm/pgalloc.h new file mode 100644 index 0000000000..de5e31c647 --- /dev/null +++ b/arch/um/include/asm/pgalloc.h @@ -0,0 +1,45 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) + * Copyright 2003 PathScale, Inc. + * Derived from include/asm-i386/pgalloc.h and include/asm-i386/pgtable.h + */ + +#ifndef __UM_PGALLOC_H +#define __UM_PGALLOC_H + +#include <linux/mm.h> + +#include <asm-generic/pgalloc.h> + +#define pmd_populate_kernel(mm, pmd, pte) \ + set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) __pa(pte))) + +#define pmd_populate(mm, pmd, pte) \ + set_pmd(pmd, __pmd(_PAGE_TABLE + \ + ((unsigned long long)page_to_pfn(pte) << \ + (unsigned long long) PAGE_SHIFT))) + +/* + * Allocate and free page tables. + */ +extern pgd_t *pgd_alloc(struct mm_struct *); + +#define __pte_free_tlb(tlb, pte, address) \ +do { \ + pagetable_pte_dtor(page_ptdesc(pte)); \ + tlb_remove_page_ptdesc((tlb), (page_ptdesc(pte))); \ +} while (0) + +#ifdef CONFIG_3_LEVEL_PGTABLES + +#define __pmd_free_tlb(tlb, pmd, address) \ +do { \ + pagetable_pmd_dtor(virt_to_ptdesc(pmd)); \ + tlb_remove_page_ptdesc((tlb), virt_to_ptdesc(pmd)); \ +} while (0) + +#endif + +#endif + |