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12045 segkmem_page_create(): Fire Walk With Me


   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
  23  * Copyright 2016 Joyent, Inc.
  24  */
  25 
  26 #include <sys/types.h>
  27 #include <sys/t_lock.h>
  28 #include <sys/param.h>
  29 #include <sys/sysmacros.h>
  30 #include <sys/tuneable.h>
  31 #include <sys/systm.h>
  32 #include <sys/vm.h>
  33 #include <sys/kmem.h>
  34 #include <sys/vmem.h>
  35 #include <sys/mman.h>
  36 #include <sys/cmn_err.h>
  37 #include <sys/debug.h>
  38 #include <sys/dumphdr.h>
  39 #include <sys/bootconf.h>
  40 #include <sys/lgrp.h>
  41 #include <vm/seg_kmem.h>
  42 #include <vm/hat.h>
  43 #include <vm/page.h>


 808         seg->s_ops = &segkmem_ops;
 809         seg->s_data = &zvp;
 810         kas.a_size += seg->s_size;
 811         return (0);
 812 }
 813 
 814 int
 815 segkmem_create(struct seg *seg)
 816 {
 817         ASSERT(seg->s_as == &kas && RW_WRITE_HELD(&kas.a_lock));
 818         seg->s_ops = &segkmem_ops;
 819         seg->s_data = &kvp;
 820         kas.a_size += seg->s_size;
 821         return (0);
 822 }
 823 
 824 /*ARGSUSED*/
 825 page_t *
 826 segkmem_page_create(void *addr, size_t size, int vmflag, void *arg)
 827 {
 828         struct seg kseg;
 829         int pgflags;
 830         struct vnode *vp = arg;
 831 
 832         if (vp == NULL)
 833                 vp = &kvp;
 834 
 835         kseg.s_as = &kas;
 836         pgflags = PG_EXCL;
 837 
 838         if (segkmem_reloc == 0 || (vmflag & VM_NORELOC))
 839                 pgflags |= PG_NORELOC;
 840         if ((vmflag & VM_NOSLEEP) == 0)
 841                 pgflags |= PG_WAIT;
 842         if (vmflag & VM_PANIC)
 843                 pgflags |= PG_PANIC;
 844         if (vmflag & VM_PUSHPAGE)
 845                 pgflags |= PG_PUSHPAGE;
 846         if (vmflag & VM_NORMALPRI) {
 847                 ASSERT(vmflag & VM_NOSLEEP);
 848                 pgflags |= PG_NORMALPRI;
 849         }
 850 
 851         return (page_create_va(vp, (u_offset_t)(uintptr_t)addr, size,
 852             pgflags, &kseg, addr));
 853 }
 854 
 855 /*
 856  * Allocate pages to back the virtual address range [addr, addr + size).




   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
  23  * Copyright 2019 Joyent, Inc.
  24  */
  25 
  26 #include <sys/types.h>
  27 #include <sys/t_lock.h>
  28 #include <sys/param.h>
  29 #include <sys/sysmacros.h>
  30 #include <sys/tuneable.h>
  31 #include <sys/systm.h>
  32 #include <sys/vm.h>
  33 #include <sys/kmem.h>
  34 #include <sys/vmem.h>
  35 #include <sys/mman.h>
  36 #include <sys/cmn_err.h>
  37 #include <sys/debug.h>
  38 #include <sys/dumphdr.h>
  39 #include <sys/bootconf.h>
  40 #include <sys/lgrp.h>
  41 #include <vm/seg_kmem.h>
  42 #include <vm/hat.h>
  43 #include <vm/page.h>


 808         seg->s_ops = &segkmem_ops;
 809         seg->s_data = &zvp;
 810         kas.a_size += seg->s_size;
 811         return (0);
 812 }
 813 
 814 int
 815 segkmem_create(struct seg *seg)
 816 {
 817         ASSERT(seg->s_as == &kas && RW_WRITE_HELD(&kas.a_lock));
 818         seg->s_ops = &segkmem_ops;
 819         seg->s_data = &kvp;
 820         kas.a_size += seg->s_size;
 821         return (0);
 822 }
 823 
 824 /*ARGSUSED*/
 825 page_t *
 826 segkmem_page_create(void *addr, size_t size, int vmflag, void *arg)
 827 {
 828         struct seg kseg = { 0 };
 829         int pgflags = PG_EXCL;
 830         struct vnode *vp = arg;
 831 
 832         if (vp == NULL)
 833                 vp = &kvp;
 834 
 835         kseg.s_as = &kas;

 836 
 837         if (segkmem_reloc == 0 || (vmflag & VM_NORELOC))
 838                 pgflags |= PG_NORELOC;
 839         if ((vmflag & VM_NOSLEEP) == 0)
 840                 pgflags |= PG_WAIT;
 841         if (vmflag & VM_PANIC)
 842                 pgflags |= PG_PANIC;
 843         if (vmflag & VM_PUSHPAGE)
 844                 pgflags |= PG_PUSHPAGE;
 845         if (vmflag & VM_NORMALPRI) {
 846                 ASSERT(vmflag & VM_NOSLEEP);
 847                 pgflags |= PG_NORMALPRI;
 848         }
 849 
 850         return (page_create_va(vp, (u_offset_t)(uintptr_t)addr, size,
 851             pgflags, &kseg, addr));
 852 }
 853 
 854 /*
 855  * Allocate pages to back the virtual address range [addr, addr + size).