The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/mips/include/tlb.h

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    1 /*-
    2  * Copyright (c) 2004-2010 Juli Mallett <jmallett@FreeBSD.org>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  * $FreeBSD: stable/8/sys/mips/include/tlb.h 215938 2010-11-27 12:26:40Z jchandra $
   27  */
   28 
   29 #ifndef _MACHINE_TLB_H_
   30 #define _MACHINE_TLB_H_
   31 
   32 /*
   33  * The first TLB entry that write random hits.
   34  * TLB entry 0 maps the kernel stack of the currently running thread
   35  * TLB entry 1 maps the pcpu area of processor (only for SMP builds)
   36  */
   37 #define KSTACK_TLB_ENTRY        0
   38 #ifdef SMP
   39 #define PCPU_TLB_ENTRY          1
   40 #define VMWIRED_ENTRIES         2
   41 #else
   42 #define VMWIRED_ENTRIES         1
   43 #endif  /* SMP */
   44 
   45 /*
   46  * The number of process id entries.
   47  */
   48 #define VMNUM_PIDS              256
   49 
   50 extern int num_tlbentries;
   51 
   52 void tlb_insert_wired(unsigned, vm_offset_t, pt_entry_t, pt_entry_t);
   53 void tlb_invalidate_address(struct pmap *, vm_offset_t);
   54 void tlb_invalidate_all(void);
   55 void tlb_invalidate_all_user(struct pmap *);
   56 void tlb_save(void);
   57 void tlb_update(struct pmap *, vm_offset_t, pt_entry_t);
   58 
   59 #endif /* !_MACHINE_TLB_H_ */

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