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1b9a9d8564
The microblaze implementation of pte_alloc_one() has a provision to allocated PTEs from high memory, but neither CONFIG_HIGHPTE nor pte_map*() versions for suitable for HIGHPTE are defined. Except that, microblaze version of pte_alloc_one() is identical to the generic one as well as the implementations of pte_free() and pte_free_kernel(). Switch microblaze to use the generic versions of these functions. Also remove pte_free_slow() that is not referenced anywhere in the code. Link: http://lkml.kernel.org/r/1565690952-32158-1-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Cc: Michal Simek <monstr@monstr.eu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
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* Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
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* Copyright (C) 2008-2009 PetaLogix
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* Copyright (C) 2006 Atmark Techno, Inc.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#ifndef _ASM_MICROBLAZE_PGALLOC_H
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#define _ASM_MICROBLAZE_PGALLOC_H
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#ifdef CONFIG_MMU
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#include <linux/kernel.h> /* For min/max macros */
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#include <linux/highmem.h>
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#include <asm/setup.h>
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#include <asm/io.h>
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#include <asm/page.h>
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#include <asm/cache.h>
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#include <asm/pgtable.h>
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#define __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL
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#include <asm-generic/pgalloc.h>
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extern void __bad_pte(pmd_t *pmd);
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static inline pgd_t *get_pgd(void)
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{
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return (pgd_t *)__get_free_pages(GFP_KERNEL|__GFP_ZERO, 0);
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}
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static inline void free_pgd(pgd_t *pgd)
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{
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free_page((unsigned long)pgd);
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}
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#define pgd_free(mm, pgd) free_pgd(pgd)
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#define pgd_alloc(mm) get_pgd()
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#define pmd_pgtable(pmd) pmd_page(pmd)
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/*
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* We don't have any real pmd's, and this code never triggers because
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* the pgd will always be present..
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*/
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#define pmd_alloc_one_fast(mm, address) ({ BUG(); ((pmd_t *)1); })
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#define pmd_alloc_one(mm, address) ({ BUG(); ((pmd_t *)2); })
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extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
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#define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, (pte))
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#define pmd_populate(mm, pmd, pte) \
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(pmd_val(*(pmd)) = (unsigned long)page_address(pte))
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#define pmd_populate_kernel(mm, pmd, pte) \
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(pmd_val(*(pmd)) = (unsigned long) (pte))
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/*
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* We don't have any real pmd's, and this code never triggers because
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* the pgd will always be present..
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*/
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#define pmd_alloc_one(mm, address) ({ BUG(); ((pmd_t *)2); })
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#define pmd_free(mm, x) do { } while (0)
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#define __pmd_free_tlb(tlb, x, addr) pmd_free((tlb)->mm, x)
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#define pgd_populate(mm, pmd, pte) BUG()
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#endif /* CONFIG_MMU */
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#endif /* _ASM_MICROBLAZE_PGALLOC_H */
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