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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /arch/m68k/include/asm/sun3_pgalloc.h | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/m68k/include/asm/sun3_pgalloc.h')
-rw-r--r-- | arch/m68k/include/asm/sun3_pgalloc.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/sun3_pgalloc.h b/arch/m68k/include/asm/sun3_pgalloc.h new file mode 100644 index 000000000..ff48573db --- /dev/null +++ b/arch/m68k/include/asm/sun3_pgalloc.h @@ -0,0 +1,52 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* sun3_pgalloc.h -- + * reorganization around 2.3.39, routines moved from sun3_pgtable.h + * + * + * 02/27/2002 -- Modified to support "highpte" implementation in 2.5.5 (Sam) + * + * moved 1/26/2000 Sam Creasey + */ + +#ifndef _SUN3_PGALLOC_H +#define _SUN3_PGALLOC_H + +#include <asm/tlb.h> + +#include <asm-generic/pgalloc.h> + +extern const char bad_pmd_string[]; + +#define __pte_free_tlb(tlb, pte, addr) \ +do { \ + pagetable_pte_dtor(page_ptdesc(pte)); \ + tlb_remove_page_ptdesc((tlb), page_ptdesc(pte)); \ +} while (0) + +static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) +{ + pmd_val(*pmd) = __pa((unsigned long)pte); +} + +static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page) +{ + pmd_val(*pmd) = __pa((unsigned long)page_address(page)); +} + +/* + * allocating and freeing a pmd is trivial: the 1-entry pmd is + * inside the pgd, so has no extra memory associated with it. + */ +#define pmd_free(mm, x) do { } while (0) + +static inline pgd_t * pgd_alloc(struct mm_struct *mm) +{ + pgd_t *new_pgd; + + new_pgd = (pgd_t *)get_zeroed_page(GFP_KERNEL); + memcpy(new_pgd, swapper_pg_dir, PAGE_SIZE); + memset(new_pgd, 0, (PAGE_OFFSET >> PGDIR_SHIFT)); + return new_pgd; +} + +#endif /* SUN3_PGALLOC_H */ |