1 /* 2 * Copyright (c) 1995 Terrence R. Lambert 3 * All rights reserved. 4 * 5 * Copyright (c) 1982, 1986, 1989, 1991, 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * (c) UNIX System Laboratories, Inc. 8 * All or some portions of this file are derived from material licensed 9 * to the University of California by American Telephone and Telegraph 10 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 11 * the permission of UNIX System Laboratories, Inc. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgement: 23 * This product includes software developed by the University of 24 * California, Berkeley and its contributors. 25 * 4. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * @(#)init_main.c 8.9 (Berkeley) 1/21/94 42 * $FreeBSD: src/sys/kern/init_main.c,v 1.134.2.8 2003/06/06 20:21:32 tegge Exp $ 43 * $DragonFly: src/sys/kern/init_main.c,v 1.82 2007/08/15 03:15:06 dillon Exp $ 44 */ 45 46 #include "opt_init_path.h" 47 48 #include <sys/param.h> 49 #include <sys/file.h> 50 #include <sys/filedesc.h> 51 #include <sys/kernel.h> 52 #include <sys/mount.h> 53 #include <sys/sysctl.h> 54 #include <sys/proc.h> 55 #include <sys/resourcevar.h> 56 #include <sys/signalvar.h> 57 #include <sys/systm.h> 58 #include <sys/vnode.h> 59 #include <sys/sysent.h> 60 #include <sys/reboot.h> 61 #include <sys/sysproto.h> 62 #include <sys/vmmeter.h> 63 #include <sys/unistd.h> 64 #include <sys/malloc.h> 65 #include <sys/machintr.h> 66 #include <sys/file2.h> 67 #include <sys/thread2.h> 68 #include <sys/sysref2.h> 69 70 #include <machine/cpu.h> 71 72 #include <vm/vm.h> 73 #include <vm/vm_param.h> 74 #include <sys/lock.h> 75 #include <vm/pmap.h> 76 #include <vm/vm_map.h> 77 #include <vm/vm_extern.h> 78 #include <sys/user.h> 79 #include <sys/copyright.h> 80 81 /* Components of the first process -- never freed. */ 82 static struct session session0; 83 static struct pgrp pgrp0; 84 static struct sigacts sigacts0; 85 static struct filedesc filedesc0; 86 static struct plimit limit0; 87 static struct vmspace vmspace0; 88 struct proc *initproc; 89 struct proc proc0; 90 struct lwp lwp0; 91 struct thread thread0; 92 93 int cmask = CMASK; 94 extern struct user *proc0paddr; 95 extern int fallback_elf_brand; 96 97 int boothowto = 0; /* initialized so that it can be patched */ 98 SYSCTL_INT(_debug, OID_AUTO, boothowto, CTLFLAG_RD, &boothowto, 0, ""); 99 100 /* 101 * This ensures that there is at least one entry so that the sysinit_set 102 * symbol is not undefined. A sybsystem ID of SI_SPECIAL_DUMMY is never 103 * executed. 104 */ 105 SYSINIT(placeholder, SI_SPECIAL_DUMMY, SI_ORDER_ANY, NULL, NULL) 106 107 /* 108 * The sysinit table itself. Items are checked off as the are run. 109 * If we want to register new sysinit types, add them to newsysinit. 110 */ 111 SET_DECLARE(sysinit_set, struct sysinit); 112 struct sysinit **sysinit, **sysinit_end; 113 struct sysinit **newsysinit, **newsysinit_end; 114 115 116 /* 117 * Merge a new sysinit set into the current set, reallocating it if 118 * necessary. This can only be called after malloc is running. 119 */ 120 void 121 sysinit_add(struct sysinit **set, struct sysinit **set_end) 122 { 123 struct sysinit **newset; 124 struct sysinit **sipp; 125 struct sysinit **xipp; 126 int count; 127 128 count = set_end - set; 129 if (newsysinit) 130 count += newsysinit_end - newsysinit; 131 else 132 count += sysinit_end - sysinit; 133 newset = kmalloc(count * sizeof(*sipp), M_TEMP, M_WAITOK); 134 if (newset == NULL) 135 panic("cannot malloc for sysinit"); 136 xipp = newset; 137 if (newsysinit) { 138 for (sipp = newsysinit; sipp < newsysinit_end; sipp++) 139 *xipp++ = *sipp; 140 } else { 141 for (sipp = sysinit; sipp < sysinit_end; sipp++) 142 *xipp++ = *sipp; 143 } 144 for (sipp = set; sipp < set_end; sipp++) 145 *xipp++ = *sipp; 146 if (newsysinit) 147 kfree(newsysinit, M_TEMP); 148 newsysinit = newset; 149 newsysinit_end = newset + count; 150 } 151 152 /* 153 * Callbacks from machine-dependant startup code (e.g. init386) to set 154 * up low level entities related to cpu #0's globaldata. 155 * 156 * Called from very low level boot code. 157 */ 158 void 159 mi_proc0init(struct globaldata *gd, struct user *proc0paddr) 160 { 161 lwkt_init_thread(&thread0, proc0paddr, LWKT_THREAD_STACK, 0, gd); 162 lwkt_set_comm(&thread0, "thread0"); 163 RB_INIT(&proc0.p_lwp_tree); 164 proc0.p_lasttid = 0; /* +1 = next TID */ 165 lwp_rb_tree_RB_INSERT(&proc0.p_lwp_tree, &lwp0); 166 lwp0.lwp_thread = &thread0; 167 lwp0.lwp_proc = &proc0; 168 proc0.p_usched = usched_init(); 169 lwp0.lwp_cpumask = 0xFFFFFFFF; 170 varsymset_init(&proc0.p_varsymset, NULL); 171 thread0.td_flags |= TDF_RUNNING; 172 thread0.td_proc = &proc0; 173 thread0.td_lwp = &lwp0; 174 thread0.td_switch = cpu_heavy_switch; /* YYY eventually LWKT */ 175 lwkt_schedule_self(curthread); 176 } 177 178 /* 179 * System startup; initialize the world, create process 0, mount root 180 * filesystem, and fork to create init and pagedaemon. Most of the 181 * hard work is done in the lower-level initialization routines including 182 * startup(), which does memory initialization and autoconfiguration. 183 * 184 * This allows simple addition of new kernel subsystems that require 185 * boot time initialization. It also allows substitution of subsystem 186 * (for instance, a scheduler, kernel profiler, or VM system) by object 187 * module. Finally, it allows for optional "kernel threads". 188 */ 189 void 190 mi_startup(void) 191 { 192 struct sysinit *sip; /* system initialization*/ 193 struct sysinit **sipp; /* system initialization*/ 194 struct sysinit **xipp; /* interior loop of sort*/ 195 struct sysinit *save; /* bubble*/ 196 197 if (sysinit == NULL) { 198 sysinit = SET_BEGIN(sysinit_set); 199 sysinit_end = SET_LIMIT(sysinit_set); 200 } 201 202 restart: 203 /* 204 * Perform a bubble sort of the system initialization objects by 205 * their subsystem (primary key) and order (secondary key). 206 */ 207 for (sipp = sysinit; sipp < sysinit_end; sipp++) { 208 for (xipp = sipp + 1; xipp < sysinit_end; xipp++) { 209 if ((*sipp)->subsystem < (*xipp)->subsystem || 210 ((*sipp)->subsystem == (*xipp)->subsystem && 211 (*sipp)->order <= (*xipp)->order)) 212 continue; /* skip*/ 213 save = *sipp; 214 *sipp = *xipp; 215 *xipp = save; 216 } 217 } 218 219 /* 220 * Traverse the (now) ordered list of system initialization tasks. 221 * Perform each task, and continue on to the next task. 222 * 223 * The last item on the list is expected to be the scheduler, 224 * which will not return. 225 */ 226 for (sipp = sysinit; sipp < sysinit_end; sipp++) { 227 sip = *sipp; 228 if (sip->subsystem == SI_SPECIAL_DUMMY) 229 continue; /* skip dummy task(s)*/ 230 231 if (sip->subsystem == SI_SPECIAL_DONE) 232 continue; 233 234 /* Call function */ 235 (*(sip->func))(sip->udata); 236 237 /* Check off the one we're just done */ 238 sip->subsystem = SI_SPECIAL_DONE; 239 240 /* Check if we've installed more sysinit items via KLD */ 241 if (newsysinit != NULL) { 242 if (sysinit != SET_BEGIN(sysinit_set)) 243 kfree(sysinit, M_TEMP); 244 sysinit = newsysinit; 245 sysinit_end = newsysinit_end; 246 newsysinit = NULL; 247 newsysinit_end = NULL; 248 goto restart; 249 } 250 } 251 252 panic("Shouldn't get here!"); 253 /* NOTREACHED*/ 254 } 255 256 257 /* 258 *************************************************************************** 259 **** 260 **** The following SYSINIT's belong elsewhere, but have not yet 261 **** been moved. 262 **** 263 *************************************************************************** 264 */ 265 static void 266 print_caddr_t(void *data __unused) 267 { 268 kprintf("%s", (char *)data); 269 } 270 SYSINIT(announce, SI_BOOT1_COPYRIGHT, SI_ORDER_FIRST, print_caddr_t, copyright) 271 272 /* 273 * Leave the critical section that protected us from spurious interrupts 274 * so device probes work. 275 */ 276 static void 277 leavecrit(void *dummy __unused) 278 { 279 MachIntrABI.finalize(); 280 cpu_enable_intr(); 281 MachIntrABI.cleanup(); 282 crit_exit(); 283 KKASSERT(!IN_CRITICAL_SECT(curthread)); 284 285 if (bootverbose) 286 kprintf("Leaving critical section, allowing interrupts\n"); 287 } 288 SYSINIT(leavecrit, SI_BOOT2_LEAVE_CRIT, SI_ORDER_ANY, leavecrit, NULL) 289 290 /* 291 * This is called after the threading system is up and running, 292 * including the softclock, clock interrupts, and SMP. 293 */ 294 static void 295 tsleepworks(void *dummy __unused) 296 { 297 tsleep_now_works = 1; 298 } 299 SYSINIT(tsleepworks, SI_BOOT2_FINISH_SMP, SI_ORDER_SECOND, tsleepworks, NULL) 300 301 /* 302 * This is called after devices have configured. Tell the kernel we are 303 * no longer in cold boot. 304 */ 305 static void 306 endofcoldboot(void *dummy __unused) 307 { 308 cold = 0; 309 } 310 SYSINIT(endofcoldboot, SI_SUB_ISWARM, SI_ORDER_ANY, endofcoldboot, NULL) 311 312 /* 313 *************************************************************************** 314 **** 315 **** The two following SYSINT's are proc0 specific glue code. I am not 316 **** convinced that they can not be safely combined, but their order of 317 **** operation has been maintained as the same as the original init_main.c 318 **** for right now. 319 **** 320 **** These probably belong in init_proc.c or kern_proc.c, since they 321 **** deal with proc0 (the fork template process). 322 **** 323 *************************************************************************** 324 */ 325 /* ARGSUSED*/ 326 static void 327 proc0_init(void *dummy __unused) 328 { 329 struct proc *p; 330 struct lwp *lp; 331 332 p = &proc0; 333 lp = &lwp0; 334 335 /* 336 * Initialize process and pgrp structures. 337 */ 338 procinit(); 339 340 /* 341 * additional VM structures 342 */ 343 vm_init2(); 344 345 /* 346 * Create process 0 (the swapper). 347 */ 348 LIST_INSERT_HEAD(&allproc, p, p_list); 349 p->p_pgrp = &pgrp0; 350 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash); 351 LIST_INIT(&pgrp0.pg_members); 352 LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist); 353 354 pgrp0.pg_session = &session0; 355 session0.s_count = 1; 356 session0.s_leader = p; 357 358 p->p_sysent = &aout_sysvec; 359 360 p->p_flag = P_SYSTEM; 361 p->p_stat = SACTIVE; 362 lp->lwp_stat = LSRUN; 363 p->p_nice = NZERO; 364 p->p_rtprio.type = RTP_PRIO_NORMAL; 365 p->p_rtprio.prio = 0; 366 lp->lwp_rtprio = p->p_rtprio; 367 368 p->p_peers = 0; 369 p->p_leader = p; 370 371 bcopy("swapper", p->p_comm, sizeof ("swapper")); 372 bcopy("swapper", thread0.td_comm, sizeof ("swapper")); 373 374 /* Create credentials. */ 375 p->p_ucred = crget(); 376 p->p_ucred->cr_ruidinfo = uifind(0); 377 p->p_ucred->cr_ngroups = 1; /* group 0 */ 378 p->p_ucred->cr_uidinfo = uifind(0); 379 380 /* Don't jail it */ 381 p->p_ucred->cr_prison = NULL; 382 383 /* Create sigacts. */ 384 p->p_sigacts = &sigacts0; 385 p->p_sigacts->ps_refcnt = 1; 386 387 /* Initialize signal state for process 0. */ 388 siginit(p); 389 390 /* Create the file descriptor table. */ 391 fdinit_bootstrap(p, &filedesc0, cmask); 392 393 /* Create the limits structures. */ 394 plimit_init0(&limit0); 395 p->p_limit = &limit0; 396 397 /* Allocate a prototype map so we have something to fork. */ 398 pmap_pinit0(vmspace_pmap(&vmspace0)); 399 p->p_vmspace = &vmspace0; 400 lp->lwp_vmspace = p->p_vmspace; 401 sysref_init(&vmspace0.vm_sysref, &vmspace_sysref_class); 402 vm_map_init(&vmspace0.vm_map, 403 round_page(VM_MIN_USER_ADDRESS), 404 trunc_page(VM_MAX_USER_ADDRESS), 405 vmspace_pmap(&vmspace0)); 406 sysref_activate(&vmspace0.vm_sysref); 407 408 /* 409 * Charge root for one process. 410 */ 411 (void)chgproccnt(p->p_ucred->cr_uidinfo, 1, 0); 412 vm_init_limits(p); 413 } 414 SYSINIT(p0init, SI_BOOT2_PROC0, SI_ORDER_FIRST, proc0_init, NULL) 415 416 static int proc0_post_callback(struct proc *p, void *data __unused); 417 418 /* ARGSUSED*/ 419 static void 420 proc0_post(void *dummy __unused) 421 { 422 struct timespec ts; 423 424 /* 425 * Now we can look at the time, having had a chance to verify the 426 * time from the file system. Pretend that proc0 started now. 427 */ 428 allproc_scan(proc0_post_callback, NULL); 429 430 /* 431 * Give the ``random'' number generator a thump. 432 * XXX: Does read_random() contain enough bits to be used here ? 433 */ 434 nanotime(&ts); 435 skrandom(ts.tv_sec ^ ts.tv_nsec); 436 } 437 438 static int 439 proc0_post_callback(struct proc *p, void *data __unused) 440 { 441 microtime(&p->p_start); 442 return(0); 443 } 444 445 SYSINIT(p0post, SI_SUB_PROC0_POST, SI_ORDER_FIRST, proc0_post, NULL) 446 447 /* 448 *************************************************************************** 449 **** 450 **** The following SYSINIT's and glue code should be moved to the 451 **** respective files on a per subsystem basis. 452 **** 453 *************************************************************************** 454 */ 455 456 457 /* 458 *************************************************************************** 459 **** 460 **** The following code probably belongs in another file, like 461 **** kern/init_init.c. 462 **** 463 *************************************************************************** 464 */ 465 466 /* 467 * List of paths to try when searching for "init". 468 */ 469 static char init_path[MAXPATHLEN] = 470 #ifdef INIT_PATH 471 __XSTRING(INIT_PATH); 472 #else 473 "/sbin/init:/sbin/oinit:/sbin/init.bak:/stand/sysinstall"; 474 #endif 475 SYSCTL_STRING(_kern, OID_AUTO, init_path, CTLFLAG_RD, init_path, 0, ""); 476 477 /* 478 * Start the initial user process; try exec'ing each pathname in init_path. 479 * The program is invoked with one argument containing the boot flags. 480 * 481 * The MP lock is held on entry. 482 */ 483 static void 484 start_init(void *dummy, struct trapframe *frame) 485 { 486 vm_offset_t addr; 487 struct execve_args args; 488 int options, error; 489 char *var, *path, *next, *s; 490 char *ucp, **uap, *arg0, *arg1; 491 struct proc *p; 492 struct lwp *lp; 493 struct mount *mp; 494 struct vnode *vp; 495 496 p = curproc; 497 498 lp = ONLY_LWP_IN_PROC(p); 499 500 /* Get the vnode for '/'. Set p->p_fd->fd_cdir to reference it. */ 501 mp = mountlist_boot_getfirst(); 502 if (VFS_ROOT(mp, &vp)) 503 panic("cannot find root vnode"); 504 if (mp->mnt_ncmountpt.ncp == NULL) { 505 cache_allocroot(&mp->mnt_ncmountpt, mp, vp); 506 cache_unlock(&mp->mnt_ncmountpt); /* leave ref intact */ 507 } 508 p->p_fd->fd_cdir = vp; 509 vref(p->p_fd->fd_cdir); 510 p->p_fd->fd_rdir = vp; 511 vref(p->p_fd->fd_rdir); 512 vfs_cache_setroot(vp, cache_hold(&mp->mnt_ncmountpt)); 513 vn_unlock(vp); /* leave ref intact */ 514 cache_copy(&mp->mnt_ncmountpt, &p->p_fd->fd_ncdir); 515 cache_copy(&mp->mnt_ncmountpt, &p->p_fd->fd_nrdir); 516 517 /* 518 * Need just enough stack to hold the faked-up "execve()" arguments. 519 */ 520 addr = trunc_page(USRSTACK - PAGE_SIZE); 521 error = vm_map_find(&p->p_vmspace->vm_map, NULL, 0, &addr, PAGE_SIZE, 522 FALSE, 523 VM_MAPTYPE_NORMAL, 524 VM_PROT_ALL, VM_PROT_ALL, 525 0); 526 if (error) 527 panic("init: couldn't allocate argument space"); 528 p->p_vmspace->vm_maxsaddr = (caddr_t)addr; 529 p->p_vmspace->vm_ssize = 1; 530 531 if ((var = kgetenv("init_path")) != NULL) { 532 strncpy(init_path, var, sizeof init_path); 533 init_path[sizeof init_path - 1] = 0; 534 } 535 if ((var = kgetenv("kern.fallback_elf_brand")) != NULL) 536 fallback_elf_brand = strtol(var, NULL, 0); 537 538 for (path = init_path; *path != '\0'; path = next) { 539 while (*path == ':') 540 path++; 541 if (*path == '\0') 542 break; 543 for (next = path; *next != '\0' && *next != ':'; next++) 544 /* nothing */ ; 545 if (bootverbose) 546 kprintf("start_init: trying %.*s\n", (int)(next - path), 547 path); 548 549 /* 550 * Move out the boot flag argument. 551 */ 552 options = 0; 553 ucp = (char *)USRSTACK; 554 (void)subyte(--ucp, 0); /* trailing zero */ 555 if (boothowto & RB_SINGLE) { 556 (void)subyte(--ucp, 's'); 557 options = 1; 558 } 559 #ifdef notyet 560 if (boothowto & RB_FASTBOOT) { 561 (void)subyte(--ucp, 'f'); 562 options = 1; 563 } 564 #endif 565 566 #ifdef BOOTCDROM 567 (void)subyte(--ucp, 'C'); 568 options = 1; 569 #endif 570 if (options == 0) 571 (void)subyte(--ucp, '-'); 572 (void)subyte(--ucp, '-'); /* leading hyphen */ 573 arg1 = ucp; 574 575 /* 576 * Move out the file name (also arg 0). 577 */ 578 (void)subyte(--ucp, 0); 579 for (s = next - 1; s >= path; s--) 580 (void)subyte(--ucp, *s); 581 arg0 = ucp; 582 583 /* 584 * Move out the arg pointers. 585 */ 586 uap = (char **)((intptr_t)ucp & ~(sizeof(intptr_t)-1)); 587 (void)suword((caddr_t)--uap, (long)0); /* terminator */ 588 (void)suword((caddr_t)--uap, (long)(intptr_t)arg1); 589 (void)suword((caddr_t)--uap, (long)(intptr_t)arg0); 590 591 /* 592 * Point at the arguments. 593 */ 594 args.fname = arg0; 595 args.argv = uap; 596 args.envv = NULL; 597 598 /* 599 * Now try to exec the program. If can't for any reason 600 * other than it doesn't exist, complain. 601 * 602 * Otherwise, return via fork_trampoline() all the way 603 * to user mode as init! 604 * 605 * WARNING! We may have been moved to another cpu after 606 * acquiring the current user process designation. The 607 * MP lock will migrate with us though so we still have to 608 * release it. 609 */ 610 if ((error = sys_execve(&args)) == 0) { 611 rel_mplock(); 612 lp->lwp_proc->p_usched->acquire_curproc(lp); 613 return; 614 } 615 if (error != ENOENT) 616 kprintf("exec %.*s: error %d\n", (int)(next - path), 617 path, error); 618 } 619 kprintf("init: not found in path %s\n", init_path); 620 panic("no init"); 621 } 622 623 /* 624 * Like kthread_create(), but runs in it's own address space. 625 * We do this early to reserve pid 1. 626 * 627 * Note special case - do not make it runnable yet. Other work 628 * in progress will change this more. 629 */ 630 static void 631 create_init(const void *udata __unused) 632 { 633 int error; 634 struct lwp *lp; 635 636 crit_enter(); 637 error = fork1(&lwp0, RFFDG | RFPROC, &initproc); 638 if (error) 639 panic("cannot fork init: %d", error); 640 initproc->p_flag |= P_SYSTEM; 641 lp = ONLY_LWP_IN_PROC(initproc); 642 cpu_set_fork_handler(lp, start_init, NULL); 643 crit_exit(); 644 } 645 SYSINIT(init, SI_SUB_CREATE_INIT, SI_ORDER_FIRST, create_init, NULL) 646 647 /* 648 * Make it runnable now. 649 */ 650 static void 651 kick_init(const void *udata __unused) 652 { 653 start_forked_proc(&lwp0, initproc); 654 } 655 SYSINIT(kickinit, SI_SUB_KTHREAD_INIT, SI_ORDER_FIRST, kick_init, NULL) 656 657 /* 658 * Machine independant globaldata initialization 659 * 660 * WARNING! Called from early boot, 'mycpu' may not work yet. 661 */ 662 void 663 mi_gdinit(struct globaldata *gd, int cpuid) 664 { 665 TAILQ_INIT(&gd->gd_tdfreeq); /* for pmap_{new,dispose}_thread() */ 666 TAILQ_INIT(&gd->gd_systimerq); 667 gd->gd_sysid_alloc = cpuid; /* prime low bits for cpu lookup */ 668 gd->gd_cpuid = cpuid; 669 gd->gd_cpumask = (cpumask_t)1 << cpuid; 670 lwkt_gdinit(gd); 671 vm_map_entry_reserve_cpu_init(gd); 672 sleep_gdinit(gd); 673 } 674 675