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As part of the conversions to replace pgtable constructor/destructors with ptdesc equivalents, convert various page table functions to use ptdescs. Some of the functions use the *get*page*() helper functions. Convert these to use pagetable_alloc() and ptdesc_address() instead to help standardize page tables further. Link: https://lkml.kernel.org/r/20230807230513.102486-23-vishal.moola@gmail.com Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com> Acked-by: Mike Rapoport (IBM) <rppt@kernel.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Claudio Imbrenda <imbrenda@linux.ibm.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Hugh Dickins <hughd@google.com> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Jonas Bonn <jonas@southpole.se> Cc: Matthew Wilcox <willy@infradead.org> Cc: Palmer Dabbelt <palmer@rivosinc.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Weinberger <richard@nod.at> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* sun3_pgalloc.h --
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* reorganization around 2.3.39, routines moved from sun3_pgtable.h
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*
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*
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* 02/27/2002 -- Modified to support "highpte" implementation in 2.5.5 (Sam)
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*
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* moved 1/26/2000 Sam Creasey
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*/
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#ifndef _SUN3_PGALLOC_H
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#define _SUN3_PGALLOC_H
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#include <asm/tlb.h>
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#include <asm-generic/pgalloc.h>
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extern const char bad_pmd_string[];
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#define __pte_free_tlb(tlb, pte, addr) \
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do { \
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pagetable_pte_dtor(page_ptdesc(pte)); \
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tlb_remove_page_ptdesc((tlb), page_ptdesc(pte)); \
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} while (0)
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static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
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{
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pmd_val(*pmd) = __pa((unsigned long)pte);
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}
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static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page)
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{
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pmd_val(*pmd) = __pa((unsigned long)page_address(page));
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}
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/*
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* allocating and freeing a pmd is trivial: the 1-entry pmd is
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* inside the pgd, so has no extra memory associated with it.
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*/
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#define pmd_free(mm, x) do { } while (0)
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static inline pgd_t * pgd_alloc(struct mm_struct *mm)
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{
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pgd_t *new_pgd;
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new_pgd = (pgd_t *)get_zeroed_page(GFP_KERNEL);
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memcpy(new_pgd, swapper_pg_dir, PAGE_SIZE);
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memset(new_pgd, 0, (PAGE_OFFSET >> PGDIR_SHIFT));
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return new_pgd;
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}
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#endif /* SUN3_PGALLOC_H */
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