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patch cstyle
patch sccs-keywords
patch SEGOP_SWAPOUT-delete


   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28 
  29 /*
  30  * Kernel Physical Mapping (kpm) segment driver (segkpm).
  31  *
  32  * This driver delivers along with the hat_kpm* interfaces an alternative
  33  * mechanism for kernel mappings within the 64-bit Solaris operating system,
  34  * which allows the mapping of all physical memory into the kernel address
  35  * space at once. This is feasible in 64 bit kernels, e.g. for Ultrasparc II
  36  * and beyond processors, since the available VA range is much larger than
  37  * possible physical memory. Momentarily all physical memory is supported,
  38  * that is represented by the list of memory segments (memsegs).
  39  *
  40  * Segkpm mappings have also very low overhead and large pages are used
  41  * (when possible) to minimize the TLB and TSB footprint. It is also
  42  * extentable for other than Sparc architectures (e.g. AMD64). Main
  43  * advantage is the avoidance of the TLB-shootdown X-calls, which are
  44  * normally needed when a kernel (global) mapping has to be removed.
  45  *
  46  * First example of a kernel facility that uses the segkpm mapping scheme
  47  * is seg_map, where it is used as an alternative to hat_memload().
  48  * See also hat layer for more information about the hat_kpm* routines.


 104  */
 105 faultcode_t segkpm_fault(struct hat *hat, struct seg *seg, caddr_t addr,
 106                         size_t len, enum fault_type type, enum seg_rw rw);
 107 static void     segkpm_dump(struct seg *);
 108 static void     segkpm_badop(void);
 109 static int      segkpm_notsup(void);
 110 static int      segkpm_capable(struct seg *, segcapability_t);
 111 
 112 #define SEGKPM_BADOP(t) (t(*)())segkpm_badop
 113 #define SEGKPM_NOTSUP   (int(*)())segkpm_notsup
 114 
 115 static struct seg_ops segkpm_ops = {
 116         SEGKPM_BADOP(int),      /* dup */
 117         SEGKPM_BADOP(int),      /* unmap */
 118         SEGKPM_BADOP(void),     /* free */
 119         segkpm_fault,
 120         SEGKPM_BADOP(int),      /* faulta */
 121         SEGKPM_BADOP(int),      /* setprot */
 122         SEGKPM_BADOP(int),      /* checkprot */
 123         SEGKPM_BADOP(int),      /* kluster */
 124         SEGKPM_BADOP(size_t),   /* swapout */
 125         SEGKPM_BADOP(int),      /* sync */
 126         SEGKPM_BADOP(size_t),   /* incore */
 127         SEGKPM_BADOP(int),      /* lockop */
 128         SEGKPM_BADOP(int),      /* getprot */
 129         SEGKPM_BADOP(u_offset_t), /* getoffset */
 130         SEGKPM_BADOP(int),      /* gettype */
 131         SEGKPM_BADOP(int),      /* getvp */
 132         SEGKPM_BADOP(int),      /* advise */
 133         segkpm_dump,            /* dump */
 134         SEGKPM_NOTSUP,          /* pagelock */
 135         SEGKPM_BADOP(int),      /* setpgsz */
 136         SEGKPM_BADOP(int),      /* getmemid */
 137         SEGKPM_BADOP(lgrp_mem_policy_info_t *), /* getpolicy */
 138         segkpm_capable,         /* capable */
 139 };
 140 
 141 /*
 142  * kpm_pgsz and kpm_pgshft are set by platform layer.
 143  */
 144 size_t          kpm_pgsz;       /* kpm page size */




   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 


  27 /*
  28  * Kernel Physical Mapping (kpm) segment driver (segkpm).
  29  *
  30  * This driver delivers along with the hat_kpm* interfaces an alternative
  31  * mechanism for kernel mappings within the 64-bit Solaris operating system,
  32  * which allows the mapping of all physical memory into the kernel address
  33  * space at once. This is feasible in 64 bit kernels, e.g. for Ultrasparc II
  34  * and beyond processors, since the available VA range is much larger than
  35  * possible physical memory. Momentarily all physical memory is supported,
  36  * that is represented by the list of memory segments (memsegs).
  37  *
  38  * Segkpm mappings have also very low overhead and large pages are used
  39  * (when possible) to minimize the TLB and TSB footprint. It is also
  40  * extentable for other than Sparc architectures (e.g. AMD64). Main
  41  * advantage is the avoidance of the TLB-shootdown X-calls, which are
  42  * normally needed when a kernel (global) mapping has to be removed.
  43  *
  44  * First example of a kernel facility that uses the segkpm mapping scheme
  45  * is seg_map, where it is used as an alternative to hat_memload().
  46  * See also hat layer for more information about the hat_kpm* routines.


 102  */
 103 faultcode_t segkpm_fault(struct hat *hat, struct seg *seg, caddr_t addr,
 104                         size_t len, enum fault_type type, enum seg_rw rw);
 105 static void     segkpm_dump(struct seg *);
 106 static void     segkpm_badop(void);
 107 static int      segkpm_notsup(void);
 108 static int      segkpm_capable(struct seg *, segcapability_t);
 109 
 110 #define SEGKPM_BADOP(t) (t(*)())segkpm_badop
 111 #define SEGKPM_NOTSUP   (int(*)())segkpm_notsup
 112 
 113 static struct seg_ops segkpm_ops = {
 114         SEGKPM_BADOP(int),      /* dup */
 115         SEGKPM_BADOP(int),      /* unmap */
 116         SEGKPM_BADOP(void),     /* free */
 117         segkpm_fault,
 118         SEGKPM_BADOP(int),      /* faulta */
 119         SEGKPM_BADOP(int),      /* setprot */
 120         SEGKPM_BADOP(int),      /* checkprot */
 121         SEGKPM_BADOP(int),      /* kluster */

 122         SEGKPM_BADOP(int),      /* sync */
 123         SEGKPM_BADOP(size_t),   /* incore */
 124         SEGKPM_BADOP(int),      /* lockop */
 125         SEGKPM_BADOP(int),      /* getprot */
 126         SEGKPM_BADOP(u_offset_t), /* getoffset */
 127         SEGKPM_BADOP(int),      /* gettype */
 128         SEGKPM_BADOP(int),      /* getvp */
 129         SEGKPM_BADOP(int),      /* advise */
 130         segkpm_dump,            /* dump */
 131         SEGKPM_NOTSUP,          /* pagelock */
 132         SEGKPM_BADOP(int),      /* setpgsz */
 133         SEGKPM_BADOP(int),      /* getmemid */
 134         SEGKPM_BADOP(lgrp_mem_policy_info_t *), /* getpolicy */
 135         segkpm_capable,         /* capable */
 136 };
 137 
 138 /*
 139  * kpm_pgsz and kpm_pgshft are set by platform layer.
 140  */
 141 size_t          kpm_pgsz;       /* kpm page size */