/* $Id: pgtable.h,v 1.1 2005-12-20 11:32:11 jcastillo Exp $ */
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/* $Id: pgtable.h,v 1.1 2005-12-20 11:32:11 jcastillo Exp $ */
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#ifndef _SPARC_PGTABLE_H
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#ifndef _SPARC_PGTABLE_H
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#define _SPARC_PGTABLE_H
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#define _SPARC_PGTABLE_H
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/* asm-sparc/pgtable.h: Defines and functions used to work
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/* asm-sparc/pgtable.h: Defines and functions used to work
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* with Sparc page tables.
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* with Sparc page tables.
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*
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*
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* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
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* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
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*/
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*/
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#include <linux/mm.h>
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#include <linux/mm.h>
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#include <asm/asi.h>
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#include <asm/asi.h>
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#include <asm/pgtsun4c.h>
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#include <asm/pgtsun4c.h>
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#include <asm/pgtsrmmu.h>
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#include <asm/pgtsrmmu.h>
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#include <asm/vac-ops.h>
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#include <asm/vac-ops.h>
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#include <asm/oplib.h>
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#include <asm/oplib.h>
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#include <asm/sbus.h>
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#include <asm/sbus.h>
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extern void load_mmu(void);
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extern void load_mmu(void);
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extern int io_remap_page_range(unsigned long from, unsigned long to,
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extern int io_remap_page_range(unsigned long from, unsigned long to,
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unsigned long size, pgprot_t prot, int space);
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unsigned long size, pgprot_t prot, int space);
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extern void (*quick_kernel_fault)(unsigned long);
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extern void (*quick_kernel_fault)(unsigned long);
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/* mmu-specific process creation/cloning/etc hooks. */
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/* mmu-specific process creation/cloning/etc hooks. */
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extern void (*mmu_exit_hook)(void);
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extern void (*mmu_exit_hook)(void);
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extern void (*mmu_flush_hook)(void);
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extern void (*mmu_flush_hook)(void);
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/* translate between physical and virtual addresses */
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/* translate between physical and virtual addresses */
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extern unsigned long (*mmu_v2p)(unsigned long);
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extern unsigned long (*mmu_v2p)(unsigned long);
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extern unsigned long (*mmu_p2v)(unsigned long);
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extern unsigned long (*mmu_p2v)(unsigned long);
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/* Routines for data transfer buffers. */
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/* Routines for data transfer buffers. */
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extern char *(*mmu_lockarea)(char *, unsigned long);
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extern char *(*mmu_lockarea)(char *, unsigned long);
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extern void (*mmu_unlockarea)(char *, unsigned long);
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extern void (*mmu_unlockarea)(char *, unsigned long);
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/* Routines for getting a dvma scsi buffer. */
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/* Routines for getting a dvma scsi buffer. */
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struct mmu_sglist {
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struct mmu_sglist {
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/* ick, I know... */
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/* ick, I know... */
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char *addr;
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char *addr;
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char *alt_addr;
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char *alt_addr;
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unsigned int len;
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unsigned int len;
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};
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};
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extern char *(*mmu_get_scsi_one)(char *, unsigned long, struct linux_sbus *sbus);
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extern char *(*mmu_get_scsi_one)(char *, unsigned long, struct linux_sbus *sbus);
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extern void (*mmu_get_scsi_sgl)(struct mmu_sglist *, int, struct linux_sbus *sbus);
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extern void (*mmu_get_scsi_sgl)(struct mmu_sglist *, int, struct linux_sbus *sbus);
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extern void (*mmu_release_scsi_one)(char *, unsigned long, struct linux_sbus *sbus);
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extern void (*mmu_release_scsi_one)(char *, unsigned long, struct linux_sbus *sbus);
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extern void (*mmu_release_scsi_sgl)(struct mmu_sglist *, int, struct linux_sbus *sbus);
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extern void (*mmu_release_scsi_sgl)(struct mmu_sglist *, int, struct linux_sbus *sbus);
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extern unsigned int pmd_shift;
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extern unsigned int pmd_shift;
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extern unsigned int pmd_size;
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extern unsigned int pmd_size;
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extern unsigned int pmd_mask;
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extern unsigned int pmd_mask;
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extern unsigned int (*pmd_align)(unsigned int);
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extern unsigned int (*pmd_align)(unsigned int);
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extern unsigned int pgdir_shift;
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extern unsigned int pgdir_shift;
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extern unsigned int pgdir_size;
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extern unsigned int pgdir_size;
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extern unsigned int pgdir_mask;
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extern unsigned int pgdir_mask;
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extern unsigned int (*pgdir_align)(unsigned int);
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extern unsigned int (*pgdir_align)(unsigned int);
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extern unsigned int ptrs_per_pte;
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extern unsigned int ptrs_per_pte;
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extern unsigned int ptrs_per_pmd;
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extern unsigned int ptrs_per_pmd;
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extern unsigned int ptrs_per_pgd;
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extern unsigned int ptrs_per_pgd;
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extern unsigned int ptrs_per_page;
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extern unsigned int ptrs_per_page;
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extern unsigned long (*(vmalloc_start))(void);
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extern unsigned long (*(vmalloc_start))(void);
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#define VMALLOC_VMADDR(x) ((unsigned long)(x))
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#define VMALLOC_VMADDR(x) ((unsigned long)(x))
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#define VMALLOC_START vmalloc_start()
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#define VMALLOC_START vmalloc_start()
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extern pgprot_t page_none;
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extern pgprot_t page_none;
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extern pgprot_t page_shared;
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extern pgprot_t page_shared;
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extern pgprot_t page_copy;
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extern pgprot_t page_copy;
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extern pgprot_t page_readonly;
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extern pgprot_t page_readonly;
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extern pgprot_t page_kernel;
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extern pgprot_t page_kernel;
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#define PMD_SHIFT (pmd_shift)
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#define PMD_SHIFT (pmd_shift)
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#define PMD_SIZE (pmd_size)
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#define PMD_SIZE (pmd_size)
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#define PMD_MASK (pmd_mask)
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#define PMD_MASK (pmd_mask)
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#define PMD_ALIGN (pmd_align)
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#define PMD_ALIGN (pmd_align)
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#define PGDIR_SHIFT (pgdir_shift)
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#define PGDIR_SHIFT (pgdir_shift)
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#define PGDIR_SIZE (pgdir_size)
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#define PGDIR_SIZE (pgdir_size)
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#define PGDIR_MASK (pgdir_mask)
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#define PGDIR_MASK (pgdir_mask)
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#define PGDIR_ALIGN (pgdir_align)
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#define PGDIR_ALIGN (pgdir_align)
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#define PTRS_PER_PTE (ptrs_per_pte)
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#define PTRS_PER_PTE (ptrs_per_pte)
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#define PTRS_PER_PMD (ptrs_per_pmd)
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#define PTRS_PER_PMD (ptrs_per_pmd)
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#define PTRS_PER_PGD (ptrs_per_pgd)
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#define PTRS_PER_PGD (ptrs_per_pgd)
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#define PAGE_NONE (page_none)
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#define PAGE_NONE (page_none)
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#define PAGE_SHARED (page_shared)
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#define PAGE_SHARED (page_shared)
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#define PAGE_COPY (page_copy)
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#define PAGE_COPY (page_copy)
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#define PAGE_READONLY (page_readonly)
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#define PAGE_READONLY (page_readonly)
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#define PAGE_KERNEL (page_kernel)
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#define PAGE_KERNEL (page_kernel)
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#define PAGE_INVALID (page_invalid)
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#define PAGE_INVALID (page_invalid)
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/* Top-level page directory */
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/* Top-level page directory */
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extern pgd_t swapper_pg_dir[1024];
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extern pgd_t swapper_pg_dir[1024];
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/* Page table for 0-4MB for everybody, on the Sparc this
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/* Page table for 0-4MB for everybody, on the Sparc this
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* holds the same as on the i386.
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* holds the same as on the i386.
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*/
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*/
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extern pte_t pg0[1024];
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extern pte_t pg0[1024];
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extern unsigned long ptr_in_current_pgd;
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extern unsigned long ptr_in_current_pgd;
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/* the no. of pointers that fit on a page: this will go away */
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/* the no. of pointers that fit on a page: this will go away */
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#define PTRS_PER_PAGE (PAGE_SIZE/sizeof(void*))
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#define PTRS_PER_PAGE (PAGE_SIZE/sizeof(void*))
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/* Here is a trick, since mmap.c need the initializer elements for
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/* Here is a trick, since mmap.c need the initializer elements for
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* protection_map[] to be constant at compile time, I set the following
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* protection_map[] to be constant at compile time, I set the following
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* to all zeros. I set it to the real values after I link in the
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* to all zeros. I set it to the real values after I link in the
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* appropriate MMU page table routines at boot time.
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* appropriate MMU page table routines at boot time.
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*/
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*/
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#define __P000 __pgprot(0)
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#define __P000 __pgprot(0)
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#define __P001 __pgprot(0)
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#define __P001 __pgprot(0)
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#define __P010 __pgprot(0)
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#define __P010 __pgprot(0)
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#define __P011 __pgprot(0)
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#define __P011 __pgprot(0)
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#define __P100 __pgprot(0)
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#define __P100 __pgprot(0)
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#define __P101 __pgprot(0)
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#define __P101 __pgprot(0)
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#define __P110 __pgprot(0)
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#define __P110 __pgprot(0)
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#define __P111 __pgprot(0)
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#define __P111 __pgprot(0)
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#define __S000 __pgprot(0)
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#define __S000 __pgprot(0)
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#define __S001 __pgprot(0)
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#define __S001 __pgprot(0)
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#define __S010 __pgprot(0)
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#define __S010 __pgprot(0)
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#define __S011 __pgprot(0)
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#define __S011 __pgprot(0)
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#define __S100 __pgprot(0)
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#define __S100 __pgprot(0)
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#define __S101 __pgprot(0)
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#define __S101 __pgprot(0)
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#define __S110 __pgprot(0)
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#define __S110 __pgprot(0)
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#define __S111 __pgprot(0)
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#define __S111 __pgprot(0)
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extern int num_contexts;
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extern int num_contexts;
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/*
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/*
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* BAD_PAGETABLE is used when we need a bogus page-table, while
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* BAD_PAGETABLE is used when we need a bogus page-table, while
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* BAD_PAGE is used for a bogus page.
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* BAD_PAGE is used for a bogus page.
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*
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*
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* ZERO_PAGE is a global shared page that is always zero: used
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* ZERO_PAGE is a global shared page that is always zero: used
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* for zero-mapped memory areas etc..
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* for zero-mapped memory areas etc..
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*/
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*/
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extern pte_t __bad_page(void);
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extern pte_t __bad_page(void);
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extern pte_t * __bad_pagetable(void);
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extern pte_t * __bad_pagetable(void);
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extern unsigned long empty_zero_page;
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extern unsigned long empty_zero_page;
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#define BAD_PAGETABLE __bad_pagetable()
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#define BAD_PAGETABLE __bad_pagetable()
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#define BAD_PAGE __bad_page()
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#define BAD_PAGE __bad_page()
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#define ZERO_PAGE ((unsigned long)(&(empty_zero_page)))
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#define ZERO_PAGE ((unsigned long)(&(empty_zero_page)))
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/* number of bits that fit into a memory pointer */
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/* number of bits that fit into a memory pointer */
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#define BITS_PER_PTR (8*sizeof(unsigned long))
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#define BITS_PER_PTR (8*sizeof(unsigned long))
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/* to align the pointer to a pointer address */
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/* to align the pointer to a pointer address */
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#define PTR_MASK (~(sizeof(void*)-1))
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#define PTR_MASK (~(sizeof(void*)-1))
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#define SIZEOF_PTR_LOG2 2
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#define SIZEOF_PTR_LOG2 2
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extern unsigned long (*pte_page)(pte_t);
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extern unsigned long (*pte_page)(pte_t);
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extern unsigned long (*pmd_page)(pmd_t);
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extern unsigned long (*pmd_page)(pmd_t);
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extern unsigned long (*pgd_page)(pgd_t);
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extern unsigned long (*pgd_page)(pgd_t);
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extern void (*sparc_update_rootmmu_dir)(struct task_struct *, pgd_t *pgdir);
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extern void (*sparc_update_rootmmu_dir)(struct task_struct *, pgd_t *pgdir);
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#define SET_PAGE_DIR(tsk,pgdir) sparc_update_rootmmu_dir(tsk, pgdir)
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#define SET_PAGE_DIR(tsk,pgdir) sparc_update_rootmmu_dir(tsk, pgdir)
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/* to find an entry in a page-table */
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/* to find an entry in a page-table */
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#define PAGE_PTR(address) \
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#define PAGE_PTR(address) \
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((unsigned long)(address)>>(PAGE_SHIFT-SIZEOF_PTR_LOG2)&PTR_MASK&~PAGE_MASK)
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((unsigned long)(address)>>(PAGE_SHIFT-SIZEOF_PTR_LOG2)&PTR_MASK&~PAGE_MASK)
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extern unsigned long high_memory;
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extern unsigned long high_memory;
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extern int (*pte_none)(pte_t);
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extern int (*pte_none)(pte_t);
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extern int (*pte_present)(pte_t);
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extern int (*pte_present)(pte_t);
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extern void (*pte_clear)(pte_t *);
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extern void (*pte_clear)(pte_t *);
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extern int (*pmd_none)(pmd_t);
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extern int (*pmd_none)(pmd_t);
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extern int (*pmd_bad)(pmd_t);
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extern int (*pmd_bad)(pmd_t);
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extern int (*pmd_present)(pmd_t);
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extern int (*pmd_present)(pmd_t);
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extern void (*pmd_clear)(pmd_t *);
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extern void (*pmd_clear)(pmd_t *);
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extern int (*pgd_none)(pgd_t);
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extern int (*pgd_none)(pgd_t);
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extern int (*pgd_bad)(pgd_t);
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extern int (*pgd_bad)(pgd_t);
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extern int (*pgd_present)(pgd_t);
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extern int (*pgd_present)(pgd_t);
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extern void (*pgd_clear)(pgd_t *);
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extern void (*pgd_clear)(pgd_t *);
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/*
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/*
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* The following only work if pte_present() is true.
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* The following only work if pte_present() is true.
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* Undefined behaviour if not..
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* Undefined behaviour if not..
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*/
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*/
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extern int (*pte_write)(pte_t);
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extern int (*pte_write)(pte_t);
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extern int (*pte_dirty)(pte_t);
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extern int (*pte_dirty)(pte_t);
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extern int (*pte_young)(pte_t);
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extern int (*pte_young)(pte_t);
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extern pte_t (*pte_wrprotect)(pte_t);
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extern pte_t (*pte_wrprotect)(pte_t);
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extern pte_t (*pte_mkclean)(pte_t);
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extern pte_t (*pte_mkclean)(pte_t);
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extern pte_t (*pte_mkold)(pte_t);
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extern pte_t (*pte_mkold)(pte_t);
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extern pte_t (*pte_mkwrite)(pte_t);
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extern pte_t (*pte_mkwrite)(pte_t);
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extern pte_t (*pte_mkdirty)(pte_t);
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extern pte_t (*pte_mkdirty)(pte_t);
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extern pte_t (*pte_mkyoung)(pte_t);
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extern pte_t (*pte_mkyoung)(pte_t);
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/*
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/*
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* Conversion functions: convert a page and protection to a page entry,
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* Conversion functions: convert a page and protection to a page entry,
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* and a page entry and page directory to the page they refer to.
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* and a page entry and page directory to the page they refer to.
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*/
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*/
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extern pte_t (*mk_pte)(unsigned long, pgprot_t);
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extern pte_t (*mk_pte)(unsigned long, pgprot_t);
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extern pte_t (*mk_pte_io)(unsigned long, pgprot_t, int);
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extern pte_t (*mk_pte_io)(unsigned long, pgprot_t, int);
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extern void (*pgd_set)(pgd_t *, pmd_t *);
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extern void (*pgd_set)(pgd_t *, pmd_t *);
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extern pte_t (*pte_modify)(pte_t, pgprot_t);
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extern pte_t (*pte_modify)(pte_t, pgprot_t);
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/* to find an entry in a page-table-directory */
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/* to find an entry in a page-table-directory */
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extern pgd_t * (*pgd_offset)(struct mm_struct *, unsigned long);
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extern pgd_t * (*pgd_offset)(struct mm_struct *, unsigned long);
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/* Find an entry in the second-level page table.. */
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/* Find an entry in the second-level page table.. */
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extern pmd_t * (*pmd_offset)(pgd_t *, unsigned long);
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extern pmd_t * (*pmd_offset)(pgd_t *, unsigned long);
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/* Find an entry in the third-level page table.. */
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/* Find an entry in the third-level page table.. */
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extern pte_t * (*pte_offset)(pmd_t *, unsigned long);
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extern pte_t * (*pte_offset)(pmd_t *, unsigned long);
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/*
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/*
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* Allocate and free page tables. The xxx_kernel() versions are
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* Allocate and free page tables. The xxx_kernel() versions are
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* used to allocate a kernel page table - this turns on ASN bits
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* used to allocate a kernel page table - this turns on ASN bits
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* if any, and marks the page tables reserved.
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* if any, and marks the page tables reserved.
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*/
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*/
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extern void (*pte_free_kernel)(pte_t *);
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extern void (*pte_free_kernel)(pte_t *);
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extern pte_t * (*pte_alloc_kernel)(pmd_t *, unsigned long);
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extern pte_t * (*pte_alloc_kernel)(pmd_t *, unsigned long);
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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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* 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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* inside the pgd, so has no extra memory associated with it.
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*/
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*/
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extern void (*pmd_free_kernel)(pmd_t *);
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extern void (*pmd_free_kernel)(pmd_t *);
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extern pmd_t * (*pmd_alloc_kernel)(pgd_t *, unsigned long);
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extern pmd_t * (*pmd_alloc_kernel)(pgd_t *, unsigned long);
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extern void (*pte_free)(pte_t *);
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extern void (*pte_free)(pte_t *);
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extern pte_t * (*pte_alloc)(pmd_t *, unsigned long);
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extern pte_t * (*pte_alloc)(pmd_t *, unsigned long);
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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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* 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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* inside the pgd, so has no extra memory associated with it.
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*/
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*/
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extern void (*pmd_free)(pmd_t *);
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extern void (*pmd_free)(pmd_t *);
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extern pmd_t * (*pmd_alloc)(pgd_t *, unsigned long);
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extern pmd_t * (*pmd_alloc)(pgd_t *, unsigned long);
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extern void (*pgd_free)(pgd_t *);
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extern void (*pgd_free)(pgd_t *);
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extern pgd_t * (*pgd_alloc)(void);
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extern pgd_t * (*pgd_alloc)(void);
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/* Fine grained cache/tlb flushing. */
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/* Fine grained cache/tlb flushing. */
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#ifdef __SMP__
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#ifdef __SMP__
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extern void (*local_flush_cache_all)(void);
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extern void (*local_flush_cache_all)(void);
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extern void (*local_flush_cache_mm)(struct mm_struct *);
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extern void (*local_flush_cache_mm)(struct mm_struct *);
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extern void (*local_flush_cache_range)(struct mm_struct *, unsigned long start,
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extern void (*local_flush_cache_range)(struct mm_struct *, unsigned long start,
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unsigned long end);
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unsigned long end);
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extern void (*local_flush_cache_page)(struct vm_area_struct *, unsigned long address);
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extern void (*local_flush_cache_page)(struct vm_area_struct *, unsigned long address);
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extern void (*local_flush_tlb_all)(void);
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extern void (*local_flush_tlb_all)(void);
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extern void (*local_flush_tlb_mm)(struct mm_struct *);
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extern void (*local_flush_tlb_mm)(struct mm_struct *);
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extern void (*local_flush_tlb_range)(struct mm_struct *, unsigned long start,
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extern void (*local_flush_tlb_range)(struct mm_struct *, unsigned long start,
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unsigned long end);
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unsigned long end);
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extern void (*local_flush_tlb_page)(struct vm_area_struct *, unsigned long address);
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extern void (*local_flush_tlb_page)(struct vm_area_struct *, unsigned long address);
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extern void (*local_flush_page_to_ram)(unsigned long address);
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extern void (*local_flush_page_to_ram)(unsigned long address);
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extern void smp_flush_cache_all(void);
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extern void smp_flush_cache_all(void);
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extern void smp_flush_cache_mm(struct mm_struct *mm);
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extern void smp_flush_cache_mm(struct mm_struct *mm);
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extern void smp_flush_cache_range(struct mm_struct *mm,
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extern void smp_flush_cache_range(struct mm_struct *mm,
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unsigned long start,
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unsigned long start,
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unsigned long end);
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unsigned long end);
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extern void smp_flush_cache_page(struct vm_area_struct *vma, unsigned long page);
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extern void smp_flush_cache_page(struct vm_area_struct *vma, unsigned long page);
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extern void smp_flush_tlb_all(void);
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extern void smp_flush_tlb_all(void);
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extern void smp_flush_tlb_mm(struct mm_struct *mm);
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extern void smp_flush_tlb_mm(struct mm_struct *mm);
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extern void smp_flush_tlb_range(struct mm_struct *mm,
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extern void smp_flush_tlb_range(struct mm_struct *mm,
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unsigned long start,
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unsigned long start,
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unsigned long end);
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unsigned long end);
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extern void smp_flush_tlb_page(struct vm_area_struct *mm, unsigned long page);
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extern void smp_flush_tlb_page(struct vm_area_struct *mm, unsigned long page);
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extern void smp_flush_page_to_ram(unsigned long page);
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extern void smp_flush_page_to_ram(unsigned long page);
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#endif
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#endif
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extern void (*flush_cache_all)(void);
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extern void (*flush_cache_all)(void);
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extern void (*flush_cache_mm)(struct mm_struct *);
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extern void (*flush_cache_mm)(struct mm_struct *);
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extern void (*flush_cache_range)(struct mm_struct *, unsigned long start,
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extern void (*flush_cache_range)(struct mm_struct *, unsigned long start,
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unsigned long end);
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unsigned long end);
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extern void (*flush_cache_page)(struct vm_area_struct *, unsigned long address);
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extern void (*flush_cache_page)(struct vm_area_struct *, unsigned long address);
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extern void (*flush_tlb_all)(void);
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extern void (*flush_tlb_all)(void);
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extern void (*flush_tlb_mm)(struct mm_struct *);
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extern void (*flush_tlb_mm)(struct mm_struct *);
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extern void (*flush_tlb_range)(struct mm_struct *, unsigned long start, unsigned long end);
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extern void (*flush_tlb_range)(struct mm_struct *, unsigned long start, unsigned long end);
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extern void (*flush_tlb_page)(struct vm_area_struct *, unsigned long address);
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extern void (*flush_tlb_page)(struct vm_area_struct *, unsigned long address);
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extern void (*flush_page_to_ram)(unsigned long page);
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extern void (*flush_page_to_ram)(unsigned long page);
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/* The permissions for pgprot_val to make a page mapped on the obio space */
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/* The permissions for pgprot_val to make a page mapped on the obio space */
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extern unsigned int pg_iobits;
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extern unsigned int pg_iobits;
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/* MMU context switching. */
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/* MMU context switching. */
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extern void (*switch_to_context)(struct task_struct *tsk);
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extern void (*switch_to_context)(struct task_struct *tsk);
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/* Certain architectures need to do special things when pte's
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/* Certain architectures need to do special things when pte's
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* within a page table are directly modified. Thus, the following
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* within a page table are directly modified. Thus, the following
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* hook is made available.
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* hook is made available.
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*/
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*/
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#if 0 /* XXX try this soon XXX */
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#if 0 /* XXX try this soon XXX */
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extern void (*set_pte)(struct vm_area_struct *vma, unsigned long address,
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extern void (*set_pte)(struct vm_area_struct *vma, unsigned long address,
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pte_t *pteptr, pte_t pteval);
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pte_t *pteptr, pte_t pteval);
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#else
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#else
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extern void (*set_pte)(pte_t *pteptr, pte_t pteval);
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extern void (*set_pte)(pte_t *pteptr, pte_t pteval);
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#endif
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#endif
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extern char *(*mmu_info)(void);
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extern char *(*mmu_info)(void);
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/* Fault handler stuff... */
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/* Fault handler stuff... */
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#define FAULT_CODE_PROT 0x1
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#define FAULT_CODE_PROT 0x1
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#define FAULT_CODE_WRITE 0x2
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#define FAULT_CODE_WRITE 0x2
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#define FAULT_CODE_USER 0x4
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#define FAULT_CODE_USER 0x4
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extern void (*update_mmu_cache)(struct vm_area_struct *vma, unsigned long address, pte_t pte);
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extern void (*update_mmu_cache)(struct vm_area_struct *vma, unsigned long address, pte_t pte);
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extern int invalid_segment;
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extern int invalid_segment;
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#define SWP_TYPE(entry) (((entry)>>2) & 0x7f)
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#define SWP_TYPE(entry) (((entry)>>2) & 0x7f)
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#define SWP_OFFSET(entry) (((entry) >> 9) & 0x7ffff)
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#define SWP_OFFSET(entry) (((entry) >> 9) & 0x7ffff)
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#define SWP_ENTRY(type,offset) (((type) << 2) | ((offset) << 9))
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#define SWP_ENTRY(type,offset) (((type) << 2) | ((offset) << 9))
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struct ctx_list {
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struct ctx_list {
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struct ctx_list *next;
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struct ctx_list *next;
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struct ctx_list *prev;
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struct ctx_list *prev;
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unsigned int ctx_number;
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unsigned int ctx_number;
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struct mm_struct *ctx_mm;
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struct mm_struct *ctx_mm;
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};
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};
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extern struct ctx_list *ctx_list_pool; /* Dynamically allocated */
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extern struct ctx_list *ctx_list_pool; /* Dynamically allocated */
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extern struct ctx_list ctx_free; /* Head of free list */
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extern struct ctx_list ctx_free; /* Head of free list */
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extern struct ctx_list ctx_used; /* Head of used contexts list */
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extern struct ctx_list ctx_used; /* Head of used contexts list */
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#define NO_CONTEXT -1
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#define NO_CONTEXT -1
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extern inline void remove_from_ctx_list(struct ctx_list *entry)
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extern inline void remove_from_ctx_list(struct ctx_list *entry)
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{
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{
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entry->next->prev = entry->prev;
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entry->next->prev = entry->prev;
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entry->prev->next = entry->next;
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entry->prev->next = entry->next;
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}
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}
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extern inline void add_to_ctx_list(struct ctx_list *head, struct ctx_list *entry)
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extern inline void add_to_ctx_list(struct ctx_list *head, struct ctx_list *entry)
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{
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{
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entry->next = head;
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entry->next = head;
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(entry->prev = head->prev)->next = entry;
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(entry->prev = head->prev)->next = entry;
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head->prev = entry;
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head->prev = entry;
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}
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}
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#define add_to_free_ctxlist(entry) add_to_ctx_list(&ctx_free, entry)
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#define add_to_free_ctxlist(entry) add_to_ctx_list(&ctx_free, entry)
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#define add_to_used_ctxlist(entry) add_to_ctx_list(&ctx_used, entry)
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#define add_to_used_ctxlist(entry) add_to_ctx_list(&ctx_used, entry)
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#endif /* !(_SPARC_PGTABLE_H) */
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#endif /* !(_SPARC_PGTABLE_H) */
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