1 /* 2 * CDDL HEADER START 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 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #include <sys/types.h> 27 #include <sys/time.h> 28 #include <sys/param.h> 29 #include <sys/systm.h> 30 #include <sys/signal.h> 31 #include <sys/sysmacros.h> 32 #include <sys/cmn_err.h> 33 #include <sys/user.h> 34 #include <sys/proc.h> 35 #include <sys/task.h> 36 #include <sys/project.h> 37 #include <sys/klwp.h> 38 #include <sys/vnode.h> 39 #include <sys/file.h> 40 #include <sys/fcntl.h> 41 #include <sys/flock.h> 42 #include <sys/var.h> 43 #include <sys/stream.h> 44 #include <sys/strsubr.h> 45 #include <sys/conf.h> 46 #include <sys/class.h> 47 #include <sys/ts.h> 48 #include <sys/rt.h> 49 #include <sys/exec.h> 50 #include <sys/exechdr.h> 51 #include <sys/buf.h> 52 #include <sys/resource.h> 53 #include <vm/seg.h> 54 #include <vm/pvn.h> 55 #include <vm/seg_kmem.h> 56 #include <sys/vmparam.h> 57 #include <sys/machparam.h> 58 #include <sys/utsname.h> 59 #include <sys/kmem.h> 60 #include <sys/stack.h> 61 #include <sys/modctl.h> 62 #include <sys/fdbuffer.h> 63 #include <sys/cyclic_impl.h> 64 #include <sys/disp.h> 65 #include <sys/tuneable.h> 66 67 #include <sys/vmem.h> 68 #include <sys/clock.h> 69 #include <sys/serializer.h> 70 71 /* 72 * The following few lines describe generic things that must be compiled 73 * into the booted executable (unix) rather than genunix or any other 74 * module because they're required by crash dump readers, etc. 75 */ 76 struct modctl modules; /* head of linked list of modules */ 77 char *default_path; /* default module loading path */ 78 struct swapinfo *swapinfo; /* protected by the swapinfo_lock */ 79 proc_t *practive; /* active process list */ 80 uint_t nproc; /* current number of processes */ 81 proc_t p0; /* process 0 */ 82 struct plock p0lock; /* p0's p_lock */ 83 klwp_t lwp0; /* t0's lwp */ 84 task_t *task0p; /* task 0 */ 85 kproject_t *proj0p; /* location of project 0 */ 86 87 /* 88 * The following are "implementation architecture" dependent constants made 89 * available here in the form of initialized data for use by "implementation 90 * architecture" independent modules. See machparam.h. 91 */ 92 const unsigned long _pagesize = (unsigned long)PAGESIZE; 93 const unsigned int _pageshift = (unsigned int)PAGESHIFT; 94 const unsigned long _pageoffset = (unsigned long)PAGEOFFSET; 95 /* 96 * XXX - This value pagemask has to be a 64bit size because 97 * large file support uses this mask on offsets which are 64 bit size. 98 * using unsigned leaves the higher 32 bits value as zero thus 99 * corrupting offset calculations in the file system and VM. 100 */ 101 const u_longlong_t _pagemask = (u_longlong_t)PAGEMASK; 102 const unsigned long _mmu_pagesize = (unsigned long)MMU_PAGESIZE; 103 const unsigned int _mmu_pageshift = (unsigned int)MMU_PAGESHIFT; 104 const unsigned long _mmu_pageoffset = (unsigned long)MMU_PAGEOFFSET; 105 const unsigned long _mmu_pagemask = (unsigned long)MMU_PAGEMASK; 106 uintptr_t _kernelbase = (uintptr_t)KERNELBASE; 107 uintptr_t _userlimit = (uintptr_t)USERLIMIT; 108 uintptr_t _userlimit32 = (uintptr_t)USERLIMIT32; 109 const uintptr_t _argsbase = (uintptr_t)ARGSBASE; 110 const unsigned int _diskrpm = (unsigned int)DISKRPM; 111 const unsigned long _pgthresh = (unsigned long)PGTHRESH; 112 const unsigned int _maxslp = (unsigned int)MAXSLP; 113 const unsigned long _maxhandspreadpages = (unsigned long)MAXHANDSPREADPAGES; 114 const int _ncpu = (int)NCPU; 115 const unsigned long _defaultstksz = (unsigned long)DEFAULTSTKSZ; 116 const unsigned int _nbpg = (unsigned int)MMU_PAGESIZE; 117 118 /* 119 * System parameter formulae. 120 * 121 * This file is copied into each directory where we compile 122 * the kernel; it should be modified there to suit local taste 123 * if necessary. 124 */ 125 126 /* 127 * Default hz is 100, but if we set hires_tick we get higher resolution 128 * clock behavior (currently defined to be 1000 hz). Higher values seem 129 * to work, but are not supported. 130 * 131 * If we do decide to play with higher values, remember that hz should 132 * satisfy the following constraints to avoid integer round-off problems: 133 * 134 * (1) hz should be in the range 100 <= hz <= MICROSEC. If hz exceeds 135 * MICROSEC, usec_per_tick will be zero and lots of stuff will break. 136 * Similarly, if hz < 100 then hz / 100 == 0 and stuff will break. 137 * 138 * (2) If hz <= 1000, it should be both a multiple of 100 and a 139 * divisor of 1000. 140 * 141 * (3) If hz > 1000, it should be both a multiple of 1000 and a 142 * divisor of MICROSEC. 143 * 144 * Thus the only reasonable values of hz (i.e. the values that won't 145 * cause roundoff error) are: 100, 200, 500, 1000, 2000, 4000, 5000, 146 * 8000, 10000, 20000, 25000, 40000, 50000, 100000, 125000, 200000, 147 * 250000, 500000, 1000000. As of this writing (1996) a clock rate 148 * of more than about 10 kHz seems utterly ridiculous, although 149 * this observation will no doubt seem quaintly amusing one day. 150 */ 151 int hz = 100; 152 int hires_hz = 1000; 153 int hires_tick = 0; 154 int cpu_decay_factor = 10; /* this is no longer tied to clock */ 155 int tick_per_msec; /* clock ticks per millisecond (zero if hz < 1000) */ 156 int msec_per_tick; /* millseconds per clock tick (zero if hz > 1000) */ 157 int usec_per_tick; /* microseconds per clock tick */ 158 int nsec_per_tick; /* nanoseconds per clock tick */ 159 int max_hres_adj; /* maximum adjustment of hrtime per tick */ 160 161 /* 162 * Setting "snooping" to a non-zero value will cause a deadman panic if 163 * snoop_interval microseconds elapse without lbolt increasing. The default 164 * snoop_interval is 50 seconds. 165 */ 166 #define SNOOP_INTERVAL_MIN (MICROSEC) 167 #define SNOOP_INTERVAL_DEFAULT (50 * MICROSEC) 168 169 int snooping = 0; 170 uint_t snoop_interval = SNOOP_INTERVAL_DEFAULT; 171 172 /* 173 * Tables of initialization functions, called from main(). 174 */ 175 176 extern void system_taskq_init(void); 177 extern void binit(void); 178 extern void space_init(void); 179 extern void dnlc_init(void); 180 extern void vfsinit(void); 181 extern void finit(void); 182 extern void strinit(void); 183 extern void flk_init(void); 184 extern void ftrace_init(void); 185 extern void softcall_init(void); 186 extern void ttyinit(void); 187 extern void schedctl_init(void); 188 extern void deadman_init(void); 189 extern void clock_timer_init(void); 190 extern void clock_realtime_init(void); 191 extern void clock_highres_init(void); 192 extern void pg_init(void); 193 extern void pg_cmt_class_init(void); 194 extern void pg_cpu0_init(void); 195 extern void clock_tick_mp_init(void); 196 extern void callout_mp_init(void); 197 198 void (*init_tbl[])(void) = { 199 system_taskq_init, 200 binit, 201 space_init, 202 dnlc_init, 203 vfsinit, 204 finit, 205 strinit, 206 serializer_init, 207 softcall_init, 208 ttyinit, 209 as_init, 210 pvn_init, 211 anon_init, 212 segvn_init, 213 flk_init, 214 pg_init, 215 pg_cmt_class_init, 216 pg_cpu0_init, 217 schedctl_init, 218 fdb_init, 219 deadman_init, 220 clock_timer_init, 221 clock_realtime_init, 222 clock_highres_init, 223 0 224 }; 225 226 227 #if defined(__sparc) 228 extern void siron_mp_init(); 229 #endif 230 231 /* 232 * Any per cpu resources should be initialized via 233 * an entry in mp_init_tbl(). 234 */ 235 void (*mp_init_tbl[])(void) = { 236 ftrace_init, 237 cyclic_mp_init, 238 #if defined(__sparc) 239 siron_mp_init, 240 #endif 241 clock_tick_mp_init, 242 callout_mp_init, 243 0 244 }; 245 246 int maxusers; /* kitchen-sink knob for dynamic configuration */ 247 248 /* 249 * pidmax -- highest pid value assigned by the system 250 * Settable in /etc/system 251 */ 252 int pidmax = DEFAULT_MAXPID; 253 254 /* 255 * jump_pid - if set, this value is where pid numbers should start 256 * after the first few system pids (0-3) are used. If 0, pids are 257 * chosen in the usual way. This variable can be used to quickly 258 * create large pids (by setting it to 100000, for example). pids 259 * less than this value will never be chosen. 260 */ 261 pid_t jump_pid = DEFAULT_JUMPPID; 262 263 /* 264 * autoup -- used in struct var for dynamic config of the age a delayed-write 265 * buffer must be in seconds before bdflush will write it out. 266 */ 267 #define DEFAULT_AUTOUP 30 268 int autoup = DEFAULT_AUTOUP; 269 270 /* 271 * bufhwm -- tuneable variable for struct var for v_bufhwm. 272 * high water mark for buffer cache mem usage in units of K bytes. 273 * 274 * bufhwm_pct -- ditto, but given in % of physmem. 275 */ 276 int bufhwm = 0; 277 int bufhwm_pct = 0; 278 279 /* 280 * Process table. 281 */ 282 int maxpid; 283 int max_nprocs; /* set in param_init() */ 284 int maxuprc; /* set in param_init() */ 285 int reserved_procs; 286 int nthread = 1; 287 288 /* 289 * UFS tunables 290 */ 291 int ufs_ninode; /* declared here due to backwards compatibility */ 292 int ndquot; /* declared here due to backwards compatibility */ 293 294 /* 295 * Exec switch table. This is used by the generic exec module 296 * to switch out to the desired executable type, based on the 297 * magic number. The currently supported types are ELF, a.out 298 * (both NMAGIC and ZMAGIC), interpreter (#!) files, 299 * and Java executables. 300 */ 301 /* 302 * Magic numbers 303 */ 304 short elfmagic = 0x7f45; 305 short intpmagic = 0x2321; 306 short jmagic = 0x504b; 307 308 #if defined(__sparc) 309 short aout_nmagic = NMAGIC; 310 short aout_zmagic = ZMAGIC; 311 short aout_omagic = OMAGIC; 312 #endif 313 short nomagic = 0; 314 315 /* 316 * Magic strings 317 */ 318 #define ELF32MAGIC_STRING "\x7f""ELF\x1" 319 #define ELF64MAGIC_STRING "\x7f""ELF\x2" 320 #define INTPMAGIC_STRING "#!" 321 #define JAVAMAGIC_STRING "PK\003\004" 322 #define AOUT_OMAGIC_STRING "\x1""\x07" /* 0407 */ 323 #define AOUT_NMAGIC_STRING "\x1""\x08" /* 0410 */ 324 #define AOUT_ZMAGIC_STRING "\x1""\x0b" /* 0413 */ 325 #define NOMAGIC_STRING "" 326 327 char elf32magicstr[] = ELF32MAGIC_STRING; 328 char elf64magicstr[] = ELF64MAGIC_STRING; 329 char intpmagicstr[] = INTPMAGIC_STRING; 330 char javamagicstr[] = JAVAMAGIC_STRING; 331 #if defined(__sparc) 332 char aout_nmagicstr[] = AOUT_NMAGIC_STRING; 333 char aout_zmagicstr[] = AOUT_ZMAGIC_STRING; 334 char aout_omagicstr[] = AOUT_OMAGIC_STRING; 335 #endif 336 char nomagicstr[] = NOMAGIC_STRING; 337 338 char *execswnames[] = { 339 "elfexec", /* Elf32 */ 340 #ifdef _LP64 341 "elfexec", /* Elf64 */ 342 #endif 343 "intpexec", 344 "javaexec", 345 #if defined(__sparc) 346 "aoutexec", 347 "aoutexec", 348 "aoutexec", 349 #endif 350 NULL, 351 NULL, 352 NULL 353 }; 354 355 struct execsw execsw[] = { 356 { elf32magicstr, 0, 5, NULL, NULL, NULL }, 357 #ifdef _LP64 358 { elf64magicstr, 0, 5, NULL, NULL, NULL }, 359 #endif 360 { intpmagicstr, 0, 2, NULL, NULL, NULL }, 361 { javamagicstr, 0, 4, NULL, NULL, NULL }, 362 #if defined(__sparc) 363 { aout_zmagicstr, 2, 2, NULL, NULL, NULL }, 364 { aout_nmagicstr, 2, 2, NULL, NULL, NULL }, 365 { aout_omagicstr, 2, 2, NULL, NULL, NULL }, 366 #endif 367 { nomagicstr, 0, 0, NULL, NULL, NULL }, 368 { nomagicstr, 0, 0, NULL, NULL, NULL }, 369 { nomagicstr, 0, 0, NULL, NULL, NULL }, 370 { nomagicstr, 0, 0, NULL, NULL, NULL } 371 }; 372 int nexectype = sizeof (execsw) / sizeof (execsw[0]); /* # of exec types */ 373 kmutex_t execsw_lock; /* Used for allocation of execsw entries */ 374 375 /* 376 * symbols added to make changing max-file-descriptors 377 * simple via /etc/system 378 */ 379 #define RLIM_FD_CUR 0x100 380 #define RLIM_FD_MAX 0x10000 381 382 uint_t rlim_fd_cur = RLIM_FD_CUR; 383 uint_t rlim_fd_max = RLIM_FD_MAX; 384 385 /* 386 * (Default resource limits were formerly declared here, but are now provided by 387 * the more general resource controls framework.) 388 */ 389 390 /* 391 * STREAMS tunables 392 */ 393 int nstrpush = 9; /* maximum # of modules/drivers on a stream */ 394 ssize_t strctlsz = 1024; /* maximum size of user-generated M_PROTO */ 395 ssize_t strmsgsz = 0x10000; /* maximum size of user-generated M_DATA */ 396 /* for `strmsgsz', zero means unlimited */ 397 /* 398 * Filesystem tunables 399 */ 400 int rstchown = 1; /* POSIX_CHOWN_RESTRICTED is enabled */ 401 int ngroups_max = NGROUPS_MAX_DEFAULT; 402 403 /* 404 * generic scheduling stuff 405 * 406 * Configurable parameters for RT and TS are in the respective 407 * scheduling class modules. 408 */ 409 410 pri_t maxclsyspri = MAXCLSYSPRI; 411 pri_t minclsyspri = MINCLSYSPRI; 412 char sys_name[] = "SYS"; 413 414 extern pri_t sys_init(); 415 extern classfuncs_t sys_classfuncs; 416 417 sclass_t sclass[] = { 418 { "SYS", sys_init, &sys_classfuncs, STATIC_SCHED, 0 }, 419 { "", NULL, NULL, NULL, 0 }, 420 { "", NULL, NULL, NULL, 0 }, 421 { "", NULL, NULL, NULL, 0 }, 422 { "", NULL, NULL, NULL, 0 }, 423 { "", NULL, NULL, NULL, 0 }, 424 { "", NULL, NULL, NULL, 0 }, 425 { "", NULL, NULL, NULL, 0 }, 426 { "", NULL, NULL, NULL, 0 }, 427 { "", NULL, NULL, NULL, 0 } 428 }; 429 430 int loaded_classes = 1; /* for loaded classes */ 431 kmutex_t class_lock; /* lock for class[] */ 432 433 int nclass = sizeof (sclass) / sizeof (sclass_t); 434 char initcls[] = "TS"; 435 char *defaultclass = initcls; 436 437 /* 438 * Tunable system parameters. 439 */ 440 441 /* 442 * The integers tune_* are done this way so that the tune 443 * data structure may be "tuned" if necessary from the /etc/system 444 * file. The tune data structure is initialized in param_init(); 445 */ 446 447 tune_t tune; 448 449 /* 450 * If freemem < t_getpgslow, then start to steal pages from processes. 451 */ 452 int tune_t_gpgslo = 25; 453 454 /* 455 * Rate at which fsflush is run, in seconds. 456 */ 457 #define DEFAULT_TUNE_T_FSFLUSHR 1 458 int tune_t_fsflushr = DEFAULT_TUNE_T_FSFLUSHR; 459 460 /* 461 * The minimum available resident (not swappable) memory to maintain 462 * in order to avoid deadlock. In pages. 463 */ 464 int tune_t_minarmem = 25; 465 466 /* 467 * The minimum available swappable memory to maintain in order to avoid 468 * deadlock. In pages. 469 */ 470 int tune_t_minasmem = 25; 471 472 int tune_t_flckrec = 512; /* max # of active frlocks */ 473 474 /* 475 * Number of currently available pages that cannot be 'locked' 476 * This is set in init_pages_pp_maximum, and must be initialized 477 * to zero here to detect an override in /etc/system 478 */ 479 pgcnt_t pages_pp_maximum = 0; 480 481 int boothowto; /* boot flags passed to kernel */ 482 struct var v; /* System Configuration Information */ 483 484 /* 485 * System Configuration Information 486 */ 487 488 #if defined(__sparc) 489 490 /* 491 * On sparc machines, read hw_serial from the firmware at boot time 492 * and simply assert Sun is the hardware provider. Hmm. 493 */ 494 char architecture[] = "sparcv9"; 495 char architecture_32[] = "sparc"; 496 char hw_serial[11]; 497 char hw_provider[] = "Sun_Microsystems"; 498 499 #elif defined(__i386) 500 501 /* 502 * On x86 machines, read hw_serial, hw_provider and srpc_domain from 503 * /etc/bootrc at boot time. 504 */ 505 char architecture[] = "i386"; 506 char architecture_32[] = "i386"; 507 char hw_serial[11] = "0"; 508 char hw_provider[SYS_NMLN] = ""; 509 510 #elif defined(__amd64) 511 512 /* 513 * On amd64 machines, read hw_serial, hw_provider and srpc_domain from 514 * /etc/bootrc at boot time. 515 */ 516 char architecture[] = "amd64"; 517 char architecture_32[] = "i386"; 518 char hw_serial[11] = "0"; 519 char hw_provider[SYS_NMLN] = ""; 520 521 #else 522 #error "unknown processor architecture" 523 #endif 524 525 char srpc_domain[SYS_NMLN] = ""; 526 char platform[SYS_NMLN] = ""; /* read from the devinfo root node */ 527 528 /* Initialize isa_list */ 529 char *isa_list = architecture; 530 531 static pgcnt_t original_physmem = 0; 532 533 #define MIN_DEFAULT_MAXUSERS 8u 534 #define MAX_DEFAULT_MAXUSERS 2048u 535 #define MAX_MAXUSERS 4096u 536 537 void 538 param_preset(void) 539 { 540 original_physmem = physmem; 541 } 542 543 void 544 param_calc(int platform_max_nprocs) 545 { 546 /* 547 * Default to about one "user" per megabyte, taking into 548 * account both physical and virtual constraints. 549 * Note: 2^20 is a meg; shifting right by (20 - PAGESHIFT) 550 * converts pages to megs without integer overflow. 551 */ 552 #if defined(__sparc) 553 if (physmem > original_physmem) { 554 physmem = original_physmem; 555 cmn_err(CE_NOTE, "physmem limited to %ld", physmem); 556 } 557 #endif 558 if (maxusers == 0) { 559 pgcnt_t physmegs = physmem >> (20 - PAGESHIFT); 560 pgcnt_t virtmegs = vmem_size(heap_arena, VMEM_FREE) >> 20; 561 maxusers = MIN(MAX(MIN(physmegs, virtmegs), 562 MIN_DEFAULT_MAXUSERS), MAX_DEFAULT_MAXUSERS); 563 } 564 if (maxusers > MAX_MAXUSERS) { 565 maxusers = MAX_MAXUSERS; 566 cmn_err(CE_NOTE, "maxusers limited to %d", MAX_MAXUSERS); 567 } 568 569 if (ngroups_max > NGROUPS_MAX_DEFAULT) 570 cmn_err(CE_WARN, "ngroups_max of %d > %d, NFS AUTH_SYS will" 571 " not work properly", ngroups_max, NGROUPS_MAX_DEFAULT); 572 573 #ifdef DEBUG 574 /* 575 * The purpose of maxusers is to prevent memory overcommit. 576 * DEBUG kernels take more space, so reduce maxusers a bit. 577 */ 578 maxusers = (3 * maxusers) / 4; 579 #endif 580 581 /* 582 * We need to dynamically change any variables now so that 583 * the setting of maxusers and pidmax propagate to the other 584 * variables that are dependent on them. 585 */ 586 if (reserved_procs == 0) 587 reserved_procs = 5; 588 if (pidmax < reserved_procs || pidmax > MAX_MAXPID) 589 maxpid = MAX_MAXPID; 590 else 591 maxpid = pidmax; 592 593 /* 594 * This allows platform-dependent code to constrain the maximum 595 * number of processes allowed in case there are e.g. VM limitations 596 * with how many contexts are available. 597 */ 598 if (max_nprocs == 0) 599 max_nprocs = (10 + 16 * maxusers); 600 if (platform_max_nprocs > 0 && max_nprocs > platform_max_nprocs) 601 max_nprocs = platform_max_nprocs; 602 if (max_nprocs > maxpid) 603 max_nprocs = maxpid; 604 605 if (maxuprc == 0) 606 maxuprc = (max_nprocs - reserved_procs); 607 } 608 609 void 610 param_init(void) 611 { 612 /* 613 * Set each individual element of struct var v to be the 614 * default value. This is done this way 615 * so that a user can set the assigned integer value in the 616 * /etc/system file *IF* tuning is needed. 617 */ 618 v.v_proc = max_nprocs; /* v_proc - max # of processes system wide */ 619 v.v_maxupttl = max_nprocs - reserved_procs; 620 v.v_maxsyspri = (int)maxclsyspri; /* max global pri for sysclass */ 621 v.v_maxup = MIN(maxuprc, v.v_maxupttl); /* max procs per user */ 622 v.v_autoup = autoup; /* v_autoup - delay for delayed writes */ 623 624 /* 625 * Set each individual element of struct tune to be the 626 * default value. Each struct element This is done this way 627 * so that a user can set the assigned integer value in the 628 * /etc/system file *IF* tuning is needed. 629 */ 630 tune.t_gpgslo = tune_t_gpgslo; 631 tune.t_fsflushr = tune_t_fsflushr; 632 tune.t_minarmem = tune_t_minarmem; 633 tune.t_minasmem = tune_t_minasmem; 634 tune.t_flckrec = tune_t_flckrec; 635 636 /* 637 * Initialization for file descriptors to correct mistaken settings in 638 * /etc/system. Initialization of limits performed by resource control 639 * system. 640 */ 641 if (rlim_fd_cur > rlim_fd_max) 642 rlim_fd_cur = rlim_fd_max; 643 644 /* 645 * calculations needed if hz was set in /etc/system 646 */ 647 if (hires_tick) 648 hz = hires_hz; 649 650 tick_per_msec = hz / MILLISEC; 651 msec_per_tick = MILLISEC / hz; 652 usec_per_tick = MICROSEC / hz; 653 nsec_per_tick = NANOSEC / hz; 654 max_hres_adj = nsec_per_tick >> ADJ_SHIFT; 655 } 656 657 /* 658 * Validate tuneable parameters following /etc/system processing, 659 * but prior to param_init(). 660 */ 661 void 662 param_check(void) 663 { 664 #if defined(__x86) 665 if (physmem != original_physmem) { 666 cmn_err(CE_NOTE, "physmem cannot be modified to 0x%lx" 667 " via /etc/system. Please use eeprom(1M) instead.", 668 physmem); 669 physmem = original_physmem; 670 } 671 #endif 672 if (ngroups_max < NGROUPS_UMIN || ngroups_max > NGROUPS_UMAX) 673 ngroups_max = NGROUPS_MAX_DEFAULT; 674 675 if (autoup <= 0) { 676 autoup = DEFAULT_AUTOUP; 677 cmn_err(CE_WARN, "autoup <= 0; defaulting to %d", autoup); 678 } 679 680 if (tune_t_fsflushr <= 0) { 681 tune_t_fsflushr = DEFAULT_TUNE_T_FSFLUSHR; 682 cmn_err(CE_WARN, "tune_t_fsflushr <= 0; defaulting to %d", 683 tune_t_fsflushr); 684 } 685 686 if (jump_pid < 0 || jump_pid >= pidmax) { 687 jump_pid = 0; 688 cmn_err(CE_WARN, "jump_pid < 0 or >= pidmax; ignored"); 689 } 690 691 if (snoop_interval < SNOOP_INTERVAL_MIN) { 692 snoop_interval = SNOOP_INTERVAL_DEFAULT; 693 cmn_err(CE_WARN, "snoop_interval < minimum (%d); defaulting" 694 " to %d", SNOOP_INTERVAL_MIN, SNOOP_INTERVAL_DEFAULT); 695 } 696 } 697