 @@ -1,190 +1,188 @@
-/*	$NetBSD: uvm_init.c,v 1.52 2019/12/27 12:51:57 ad Exp $	*/
+/*	$NetBSD: uvm_init.c,v 1.53 2020/03/06 20:46:12 ad Exp $	*/
 /*
  * Copyright (c) 1997 Charles D. Cranor and Washington University.
  * All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
+ *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
  * from: Id: uvm_init.c,v 1.1.2.3 1998/02/06 05:15:27 chs Exp
  */
 /*
  * uvm_init.c: init the vm system.
  */
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uvm_init.c,v 1.52 2019/12/27 12:51:57 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uvm_init.c,v 1.53 2020/03/06 20:46:12 ad Exp $");
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/debug.h>
 #include <sys/file.h>
 #include <sys/filedesc.h>
 #include <sys/resourcevar.h>
 #include <sys/kmem.h>
 #include <sys/mman.h>
 #include <sys/vnode.h>
 #include <uvm/uvm.h>
 #include <uvm/uvm_pdpolicy.h>
 #include <uvm/uvm_physseg.h>
 #include <uvm/uvm_readahead.h>
 /*
  * struct uvm: we store most global vars in this structure to make them
  * easier to spot...
  */
 struct uvm uvm;		/* decl */
 struct uvmexp uvmexp;	/* decl */
 struct uvm_object *uvm_kernel_object;
 #if defined(__uvmexp_pagesize)
 const int * const uvmexp_pagesize = &uvmexp.pagesize;
 const int * const uvmexp_pagemask = &uvmexp.pagemask;
 const int * const uvmexp_pageshift = &uvmexp.pageshift;
 #endif
 kmutex_t uvm_kentry_lock __cacheline_aligned;
 /*
  * uvm_md_init: Init dependant on the MD boot context.
  *		called from MD code.
  */
 void
 uvm_md_init(void)
+{
 	uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */
 	uvm_physseg_init();
+}
 /*
  * uvm_init: init the VM system.   called from kern/init_main.c.
  */
 void
 uvm_init(void)
+{
 	vaddr_t kvm_start, kvm_end;
 	/*
 	 * Ensure that the hardware set the page size, zero the UVM structure.
 	 */
 	if (uvmexp.pagesize == 0) {
 		panic("uvm_init: page size not set");
+	}
 	memset(&uvm, 0, sizeof(uvm));
 	averunnable.fscale = FSCALE;
 	/*
 	 * Init the page sub-system.  This includes allocating the vm_page
 	 * structures, and setting up all the page queues (and locks).
 	 * Available memory will be put in the "free" queue, kvm_start and
 	 * kvm_end will be set to the area of kernel virtual memory which
 	 * is available for general use.
 	 */
 	uvm_page_init(&kvm_start, &kvm_end);
 	/*
 	 * Init the map sub-system.
 	 */
 	uvm_map_init();
 	/*
 	 * Setup the kernel's virtual memory data structures.  This includes
 	 * setting up the kernel_map/kernel_object.
 	 * Bootstrap all kernel memory allocators.
 	 */
 	uao_init();
 	uvm_km_bootstrap(kvm_start, kvm_end);
 	/*
 	 * Setup uvm_map caches and init the amap.
 	 */
 	uvm_map_init_caches();
 	uvm_amap_init();
 	/*
 	 * Init the pmap module.  The pmap module is free to allocate
 	 * memory for its private use (e.g. pvlists).
 	 */
 	pmap_init();
 	/*
 	 * Make kernel memory allocators ready for use.
 	 * After this call the pool/kmem memory allocators can be used.
 	 */
 	uvm_km_init();
 #ifdef __HAVE_PMAP_PV_TRACK
 	pmap_pv_init();
 #endif
 #ifdef DEBUG
 	debug_init();
 #endif
 	/*
 	 * Init all pagers and the pager_map.
 	 */
 	uvm_pager_init();
 	/*
 	 * Initialize the uvm_loan() facility.
 	 */
 	uvm_loan_init();
 	/*
-	 * The VM system is now up!  Now that kmem is up we can resize the
+	 * Enable paging of kernel objects.
 	 * <obj,off> => <page> hash table for general use and enable paging
 	 * of kernel objects.
 	 */
 	uao_create(VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS,
 	    UAO_FLAG_KERNSWAP);
 	uvmpdpol_reinit();
 	/*
 	 * Init anonymous memory systems.
 	 */
 	uvm_anon_init();
 	uvm_uarea_init();
 	/*
 	 * Init readahead mechanism.
 	 */
 	uvm_ra_init();
+}