2 * Copyright (c) 1996, by Steve Passe
3 * Copyright (c) 2003, by Peter Wemm
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. The name of the developer may NOT be used to endorse or promote products
12 * derived from this software without specific prior written permission.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
34 #include "opt_kstack_pages.h"
36 #include "opt_sched.h"
39 #include <sys/param.h>
40 #include <sys/systm.h>
42 #include <sys/cons.h> /* cngetc() */
43 #include <sys/cpuset.h>
48 #include <sys/kernel.h>
51 #include <sys/malloc.h>
52 #include <sys/memrange.h>
53 #include <sys/mutex.h>
56 #include <sys/sched.h>
58 #include <sys/sysctl.h>
61 #include <vm/vm_param.h>
63 #include <vm/vm_kern.h>
64 #include <vm/vm_extern.h>
65 #include <vm/vm_map.h>
67 #include <x86/apicreg.h>
68 #include <machine/clock.h>
69 #include <machine/cpu.h>
70 #include <machine/cputypes.h>
72 #include <machine/md_var.h>
73 #include <machine/pcb.h>
74 #include <machine/psl.h>
75 #include <machine/smp.h>
76 #include <machine/specialreg.h>
77 #include <x86/ucode.h>
79 static MALLOC_DEFINE(M_CPUS, "cpus", "CPU items");
81 /* lock region used by kernel profiling */
84 int mp_naps; /* # of Applications processors */
85 int boot_cpu_id = -1; /* designated BSP */
87 /* AP uses this during bootstrap. Do not staticize. */
91 /* Free these after use */
92 void *bootstacks[MAXCPU];
95 struct pcb stoppcbs[MAXCPU];
96 struct susppcb **susppcbs;
99 /* Interrupt counts. */
100 static u_long *ipi_preempt_counts[MAXCPU];
101 static u_long *ipi_ast_counts[MAXCPU];
102 u_long *ipi_invltlb_counts[MAXCPU];
103 u_long *ipi_invlrng_counts[MAXCPU];
104 u_long *ipi_invlpg_counts[MAXCPU];
105 u_long *ipi_invlcache_counts[MAXCPU];
106 u_long *ipi_rendezvous_counts[MAXCPU];
107 static u_long *ipi_hardclock_counts[MAXCPU];
110 /* Default cpu_ops implementation. */
111 struct cpu_ops cpu_ops;
114 * Local data and functions.
117 static volatile cpuset_t ipi_stop_nmi_pending;
119 volatile cpuset_t resuming_cpus;
120 volatile cpuset_t toresume_cpus;
122 /* used to hold the AP's until we are ready to release them */
123 struct mtx ap_boot_mtx;
125 /* Set to 1 once we're ready to let the APs out of the pen. */
126 volatile int aps_ready = 0;
129 * Store data from cpu_add() until later in the boot when we actually setup
132 struct cpu_info *cpu_info;
134 int cpu_apic_ids[MAXCPU];
135 _Static_assert(MAXCPU <= MAX_APIC_ID,
136 "MAXCPU cannot be larger that MAX_APIC_ID");
137 _Static_assert(xAPIC_MAX_APIC_ID <= MAX_APIC_ID,
138 "xAPIC_MAX_APIC_ID cannot be larger that MAX_APIC_ID");
140 /* Holds pending bitmap based IPIs per CPU */
141 volatile u_int cpu_ipi_pending[MAXCPU];
143 static void release_aps(void *dummy);
144 static void cpustop_handler_post(u_int cpu);
146 static int hyperthreading_allowed = 1;
147 SYSCTL_INT(_machdep, OID_AUTO, hyperthreading_allowed, CTLFLAG_RDTUN,
148 &hyperthreading_allowed, 0, "Use Intel HTT logical CPUs");
150 static struct topo_node topo_root;
152 static int pkg_id_shift;
153 static int node_id_shift;
154 static int core_id_shift;
155 static int disabled_cpus;
160 } static caches[MAX_CACHE_LEVELS];
162 unsigned int boot_address;
164 #define MiB(v) (v ## ULL << 20)
167 mem_range_AP_init(void)
170 if (mem_range_softc.mr_op && mem_range_softc.mr_op->initAP)
171 mem_range_softc.mr_op->initAP(&mem_range_softc);
175 * Round up to the next power of two, if necessary, and then
177 * Returns -1 if argument is zero.
183 return (fls(x << (1 - powerof2(x))) - 1);
187 * Add a cache level to the cache topology description.
190 add_deterministic_cache(int type, int level, int share_count)
196 printf("unexpected cache type %d\n", type);
199 if (type == 2) /* ignore instruction cache */
201 if (level == 0 || level > MAX_CACHE_LEVELS) {
202 printf("unexpected cache level %d\n", type);
206 if (caches[level - 1].present) {
207 printf("WARNING: multiple entries for L%u data cache\n", level);
208 printf("%u => %u\n", caches[level - 1].id_shift,
209 mask_width(share_count));
211 caches[level - 1].id_shift = mask_width(share_count);
212 caches[level - 1].present = 1;
214 if (caches[level - 1].id_shift > pkg_id_shift) {
215 printf("WARNING: L%u data cache covers more "
216 "APIC IDs than a package (%u > %u)\n", level,
217 caches[level - 1].id_shift, pkg_id_shift);
218 caches[level - 1].id_shift = pkg_id_shift;
220 if (caches[level - 1].id_shift < core_id_shift) {
221 printf("WARNING: L%u data cache covers fewer "
222 "APIC IDs than a core (%u < %u)\n", level,
223 caches[level - 1].id_shift, core_id_shift);
224 caches[level - 1].id_shift = core_id_shift;
231 * Determine topology of processing units and caches for AMD CPUs.
233 * - AMD CPUID Specification (Publication # 25481)
234 * - BKDG for AMD NPT Family 0Fh Processors (Publication # 32559)
235 * - BKDG For AMD Family 10h Processors (Publication # 31116)
236 * - BKDG For AMD Family 15h Models 00h-0Fh Processors (Publication # 42301)
237 * - BKDG For AMD Family 16h Models 00h-0Fh Processors (Publication # 48751)
238 * - PPR For AMD Family 17h Models 00h-0Fh Processors (Publication # 54945)
246 int nodes_per_socket;
251 /* No multi-core capability. */
252 if ((amd_feature2 & AMDID2_CMP) == 0)
255 /* For families 10h and newer. */
256 pkg_id_shift = (cpu_procinfo2 & AMDID_COREID_SIZE) >>
257 AMDID_COREID_SIZE_SHIFT;
259 /* For 0Fh family. */
260 if (pkg_id_shift == 0)
262 mask_width((cpu_procinfo2 & AMDID_CMP_CORES) + 1);
265 * Families prior to 16h define the following value as
266 * cores per compute unit and we don't really care about the AMD
267 * compute units at the moment. Perhaps we should treat them as
268 * cores and cores within the compute units as hardware threads,
269 * but that's up for debate.
270 * Later families define the value as threads per compute unit,
271 * so we are following AMD's nomenclature here.
273 if ((amd_feature2 & AMDID2_TOPOLOGY) != 0 &&
274 CPUID_TO_FAMILY(cpu_id) >= 0x16) {
275 cpuid_count(0x8000001e, 0, p);
276 share_count = ((p[1] >> 8) & 0xff) + 1;
277 core_id_shift = mask_width(share_count);
280 * For Zen (17h), gather Nodes per Processor. Each node is a
281 * Zeppelin die; TR and EPYC CPUs will have multiple dies per
282 * package. Communication latency between dies is higher than
285 nodes_per_socket = ((p[2] >> 8) & 0x7) + 1;
286 node_id_shift = pkg_id_shift - mask_width(nodes_per_socket);
289 if ((amd_feature2 & AMDID2_TOPOLOGY) != 0) {
291 cpuid_count(0x8000001d, i, p);
293 level = (p[0] >> 5) & 0x7;
294 share_count = 1 + ((p[0] >> 14) & 0xfff);
296 if (!add_deterministic_cache(type, level, share_count))
300 if (cpu_exthigh >= 0x80000005) {
301 cpuid_count(0x80000005, 0, p);
302 if (((p[2] >> 24) & 0xff) != 0) {
303 caches[0].id_shift = 0;
304 caches[0].present = 1;
307 if (cpu_exthigh >= 0x80000006) {
308 cpuid_count(0x80000006, 0, p);
309 if (((p[2] >> 16) & 0xffff) != 0) {
310 caches[1].id_shift = 0;
311 caches[1].present = 1;
313 if (((p[3] >> 18) & 0x3fff) != 0) {
314 nodes_per_socket = 1;
315 if ((amd_feature2 & AMDID2_NODE_ID) != 0) {
317 * Handle multi-node processors that
318 * have multiple chips, each with its
319 * own L3 cache, on the same die.
321 v = rdmsr(0xc001100c);
322 nodes_per_socket = 1 + ((v >> 3) & 0x7);
325 pkg_id_shift - mask_width(nodes_per_socket);
326 caches[2].present = 1;
333 * Determine topology of processing units for Intel CPUs
334 * using CPUID Leaf 1 and Leaf 4, if supported.
336 * - Intel 64 Architecture Processor Topology Enumeration
337 * - Intel 64 and IA-32 ArchitecturesSoftware Developer’s Manual,
338 * Volume 3A: System Programming Guide, PROGRAMMING CONSIDERATIONS
339 * FOR HARDWARE MULTI-THREADING CAPABLE PROCESSORS
342 topo_probe_intel_0x4(void)
348 /* Both zero and one here mean one logical processor per package. */
349 max_logical = (cpu_feature & CPUID_HTT) != 0 ?
350 (cpu_procinfo & CPUID_HTT_CORES) >> 16 : 1;
351 if (max_logical <= 1)
354 if (cpu_high >= 0x4) {
355 cpuid_count(0x04, 0, p);
356 max_cores = ((p[0] >> 26) & 0x3f) + 1;
360 core_id_shift = mask_width(max_logical/max_cores);
361 KASSERT(core_id_shift >= 0,
362 ("intel topo: max_cores > max_logical\n"));
363 pkg_id_shift = core_id_shift + mask_width(max_cores);
367 * Determine topology of processing units for Intel CPUs
368 * using CPUID Leaf 11, if supported.
370 * - Intel 64 Architecture Processor Topology Enumeration
371 * - Intel 64 and IA-32 ArchitecturesSoftware Developer’s Manual,
372 * Volume 3A: System Programming Guide, PROGRAMMING CONSIDERATIONS
373 * FOR HARDWARE MULTI-THREADING CAPABLE PROCESSORS
376 topo_probe_intel_0xb(void)
383 /* Fall back if CPU leaf 11 doesn't really exist. */
384 cpuid_count(0x0b, 0, p);
386 topo_probe_intel_0x4();
390 /* We only support three levels for now. */
392 cpuid_count(0x0b, i, p);
395 type = (p[2] >> 8) & 0xff;
400 /* TODO: check for duplicate (re-)assignment */
401 if (type == CPUID_TYPE_SMT)
402 core_id_shift = bits;
403 else if (type == CPUID_TYPE_CORE)
406 printf("unknown CPU level type %d\n", type);
409 if (pkg_id_shift < core_id_shift) {
410 printf("WARNING: core covers more APIC IDs than a package\n");
411 core_id_shift = pkg_id_shift;
416 * Determine topology of caches for Intel CPUs.
418 * - Intel 64 Architecture Processor Topology Enumeration
419 * - Intel 64 and IA-32 Architectures Software Developer’s Manual
420 * Volume 2A: Instruction Set Reference, A-M,
424 topo_probe_intel_caches(void)
432 if (cpu_high < 0x4) {
434 * Available cache level and sizes can be determined
435 * via CPUID leaf 2, but that requires a huge table of hardcoded
436 * values, so for now just assume L1 and L2 caches potentially
437 * shared only by HTT processing units, if HTT is present.
439 caches[0].id_shift = pkg_id_shift;
440 caches[0].present = 1;
441 caches[1].id_shift = pkg_id_shift;
442 caches[1].present = 1;
447 cpuid_count(0x4, i, p);
449 level = (p[0] >> 5) & 0x7;
450 share_count = 1 + ((p[0] >> 14) & 0xfff);
452 if (!add_deterministic_cache(type, level, share_count))
458 * Determine topology of processing units and caches for Intel CPUs.
460 * - Intel 64 Architecture Processor Topology Enumeration
463 topo_probe_intel(void)
467 * Note that 0x1 <= cpu_high < 4 case should be
468 * compatible with topo_probe_intel_0x4() logic when
469 * CPUID.1:EBX[23:16] > 0 (cpu_cores will be 1)
470 * or it should trigger the fallback otherwise.
473 topo_probe_intel_0xb();
474 else if (cpu_high >= 0x1)
475 topo_probe_intel_0x4();
477 topo_probe_intel_caches();
481 * Topology information is queried only on BSP, on which this
482 * code runs and for which it can query CPUID information.
483 * Then topology is extrapolated on all packages using an
484 * assumption that APIC ID to hardware component ID mapping is
486 * That doesn't necesserily imply that the topology is uniform.
491 static int cpu_topo_probed = 0;
492 struct x86_topo_layer {
496 } topo_layers[MAX_CACHE_LEVELS + 4];
497 struct topo_node *parent;
498 struct topo_node *node;
507 CPU_ZERO(&logical_cpus_mask);
511 else if (cpu_vendor_id == CPU_VENDOR_AMD)
513 else if (cpu_vendor_id == CPU_VENDOR_INTEL)
516 KASSERT(pkg_id_shift >= core_id_shift,
517 ("bug in APIC topology discovery"));
520 bzero(topo_layers, sizeof(topo_layers));
522 topo_layers[nlayers].type = TOPO_TYPE_PKG;
523 topo_layers[nlayers].id_shift = pkg_id_shift;
525 printf("Package ID shift: %u\n", topo_layers[nlayers].id_shift);
528 if (pkg_id_shift > node_id_shift && node_id_shift != 0) {
529 topo_layers[nlayers].type = TOPO_TYPE_GROUP;
530 topo_layers[nlayers].id_shift = node_id_shift;
532 printf("Node ID shift: %u\n",
533 topo_layers[nlayers].id_shift);
538 * Consider all caches to be within a package/chip
539 * and "in front" of all sub-components like
540 * cores and hardware threads.
542 for (i = MAX_CACHE_LEVELS - 1; i >= 0; --i) {
543 if (caches[i].present) {
544 if (node_id_shift != 0)
545 KASSERT(caches[i].id_shift <= node_id_shift,
546 ("bug in APIC topology discovery"));
547 KASSERT(caches[i].id_shift <= pkg_id_shift,
548 ("bug in APIC topology discovery"));
549 KASSERT(caches[i].id_shift >= core_id_shift,
550 ("bug in APIC topology discovery"));
552 topo_layers[nlayers].type = TOPO_TYPE_CACHE;
553 topo_layers[nlayers].subtype = i + 1;
554 topo_layers[nlayers].id_shift = caches[i].id_shift;
556 printf("L%u cache ID shift: %u\n",
557 topo_layers[nlayers].subtype,
558 topo_layers[nlayers].id_shift);
563 if (pkg_id_shift > core_id_shift) {
564 topo_layers[nlayers].type = TOPO_TYPE_CORE;
565 topo_layers[nlayers].id_shift = core_id_shift;
567 printf("Core ID shift: %u\n",
568 topo_layers[nlayers].id_shift);
572 topo_layers[nlayers].type = TOPO_TYPE_PU;
573 topo_layers[nlayers].id_shift = 0;
576 topo_init_root(&topo_root);
577 for (i = 0; i <= max_apic_id; ++i) {
578 if (!cpu_info[i].cpu_present)
582 for (layer = 0; layer < nlayers; ++layer) {
583 node_id = i >> topo_layers[layer].id_shift;
584 parent = topo_add_node_by_hwid(parent, node_id,
585 topo_layers[layer].type,
586 topo_layers[layer].subtype);
591 for (layer = 0; layer < nlayers; ++layer) {
592 node_id = boot_cpu_id >> topo_layers[layer].id_shift;
593 node = topo_find_node_by_hwid(parent, node_id,
594 topo_layers[layer].type,
595 topo_layers[layer].subtype);
596 topo_promote_child(node);
604 * Assign logical CPU IDs to local APICs.
609 struct topo_node *node;
613 smt_mask = (1u << core_id_shift) - 1;
616 * Assign CPU IDs to local APIC IDs and disable any CPUs
617 * beyond MAXCPU. CPU 0 is always assigned to the BSP.
621 TOPO_FOREACH(node, &topo_root) {
622 if (node->type != TOPO_TYPE_PU)
625 if ((node->hwid & smt_mask) != (boot_cpu_id & smt_mask))
626 cpu_info[node->hwid].cpu_hyperthread = 1;
628 if (resource_disabled("lapic", node->hwid)) {
629 if (node->hwid != boot_cpu_id)
630 cpu_info[node->hwid].cpu_disabled = 1;
632 printf("Cannot disable BSP, APIC ID = %d\n",
636 if (!hyperthreading_allowed &&
637 cpu_info[node->hwid].cpu_hyperthread)
638 cpu_info[node->hwid].cpu_disabled = 1;
640 if (mp_ncpus >= MAXCPU)
641 cpu_info[node->hwid].cpu_disabled = 1;
643 if (cpu_info[node->hwid].cpu_disabled) {
648 if (cpu_info[node->hwid].cpu_hyperthread)
651 cpu_apic_ids[mp_ncpus] = node->hwid;
652 apic_cpuids[node->hwid] = mp_ncpus;
653 topo_set_pu_id(node, mp_ncpus);
657 KASSERT(mp_maxid >= mp_ncpus - 1,
658 ("%s: counters out of sync: max %d, count %d", __func__, mp_maxid,
661 mp_ncores = mp_ncpus - nhyper;
662 smp_threads_per_core = mp_ncpus / mp_ncores;
666 * Print various information about the SMP system hardware and setup.
669 cpu_mp_announce(void)
671 struct topo_node *node;
672 const char *hyperthread;
673 struct topo_analysis topology;
675 printf("FreeBSD/SMP: ");
676 if (topo_analyze(&topo_root, 1, &topology)) {
677 printf("%d package(s)", topology.entities[TOPO_LEVEL_PKG]);
678 if (topology.entities[TOPO_LEVEL_GROUP] > 1)
679 printf(" x %d groups",
680 topology.entities[TOPO_LEVEL_GROUP]);
681 if (topology.entities[TOPO_LEVEL_CACHEGROUP] > 1)
682 printf(" x %d cache groups",
683 topology.entities[TOPO_LEVEL_CACHEGROUP]);
684 if (topology.entities[TOPO_LEVEL_CORE] > 0)
685 printf(" x %d core(s)",
686 topology.entities[TOPO_LEVEL_CORE]);
687 if (topology.entities[TOPO_LEVEL_THREAD] > 1)
688 printf(" x %d hardware threads",
689 topology.entities[TOPO_LEVEL_THREAD]);
691 printf("Non-uniform topology");
696 printf("FreeBSD/SMP Online: ");
697 if (topo_analyze(&topo_root, 0, &topology)) {
698 printf("%d package(s)",
699 topology.entities[TOPO_LEVEL_PKG]);
700 if (topology.entities[TOPO_LEVEL_GROUP] > 1)
701 printf(" x %d groups",
702 topology.entities[TOPO_LEVEL_GROUP]);
703 if (topology.entities[TOPO_LEVEL_CACHEGROUP] > 1)
704 printf(" x %d cache groups",
705 topology.entities[TOPO_LEVEL_CACHEGROUP]);
706 if (topology.entities[TOPO_LEVEL_CORE] > 0)
707 printf(" x %d core(s)",
708 topology.entities[TOPO_LEVEL_CORE]);
709 if (topology.entities[TOPO_LEVEL_THREAD] > 1)
710 printf(" x %d hardware threads",
711 topology.entities[TOPO_LEVEL_THREAD]);
713 printf("Non-uniform topology");
721 TOPO_FOREACH(node, &topo_root) {
722 switch (node->type) {
724 printf("Package HW ID = %u\n", node->hwid);
727 printf("\tCore HW ID = %u\n", node->hwid);
730 if (cpu_info[node->hwid].cpu_hyperthread)
735 if (node->subtype == 0)
736 printf("\t\tCPU (AP%s): APIC ID: %u"
737 "(disabled)\n", hyperthread, node->hwid);
738 else if (node->id == 0)
739 printf("\t\tCPU0 (BSP): APIC ID: %u\n",
742 printf("\t\tCPU%u (AP%s): APIC ID: %u\n",
743 node->id, hyperthread, node->hwid);
753 * Add a scheduling group, a group of logical processors sharing
754 * a particular cache (and, thus having an affinity), to the scheduling
756 * This function recursively works on lower level caches.
759 x86topo_add_sched_group(struct topo_node *root, struct cpu_group *cg_root)
761 struct topo_node *node;
766 KASSERT(root->type == TOPO_TYPE_SYSTEM || root->type == TOPO_TYPE_CACHE ||
767 root->type == TOPO_TYPE_GROUP,
768 ("x86topo_add_sched_group: bad type: %u", root->type));
769 CPU_COPY(&root->cpuset, &cg_root->cg_mask);
770 cg_root->cg_count = root->cpu_count;
771 if (root->type == TOPO_TYPE_SYSTEM)
772 cg_root->cg_level = CG_SHARE_NONE;
774 cg_root->cg_level = root->subtype;
777 * Check how many core nodes we have under the given root node.
778 * If we have multiple logical processors, but not multiple
779 * cores, then those processors must be hardware threads.
783 while (node != NULL) {
784 if (node->type != TOPO_TYPE_CORE) {
785 node = topo_next_node(root, node);
790 node = topo_next_nonchild_node(root, node);
793 if (cg_root->cg_level != CG_SHARE_NONE &&
794 root->cpu_count > 1 && ncores < 2)
795 cg_root->cg_flags = CG_FLAG_SMT;
798 * Find out how many cache nodes we have under the given root node.
799 * We ignore cache nodes that cover all the same processors as the
800 * root node. Also, we do not descend below found cache nodes.
801 * That is, we count top-level "non-redundant" caches under the root
806 while (node != NULL) {
807 if ((node->type != TOPO_TYPE_GROUP &&
808 node->type != TOPO_TYPE_CACHE) ||
809 (root->type != TOPO_TYPE_SYSTEM &&
810 CPU_CMP(&node->cpuset, &root->cpuset) == 0)) {
811 node = topo_next_node(root, node);
815 node = topo_next_nonchild_node(root, node);
818 cg_root->cg_child = smp_topo_alloc(nchildren);
819 cg_root->cg_children = nchildren;
822 * Now find again the same cache nodes as above and recursively
823 * build scheduling topologies for them.
827 while (node != NULL) {
828 if ((node->type != TOPO_TYPE_GROUP &&
829 node->type != TOPO_TYPE_CACHE) ||
830 (root->type != TOPO_TYPE_SYSTEM &&
831 CPU_CMP(&node->cpuset, &root->cpuset) == 0)) {
832 node = topo_next_node(root, node);
835 cg_root->cg_child[i].cg_parent = cg_root;
836 x86topo_add_sched_group(node, &cg_root->cg_child[i]);
838 node = topo_next_nonchild_node(root, node);
843 * Build the MI scheduling topology from the discovered hardware topology.
848 struct cpu_group *cg_root;
851 return (smp_topo_none());
853 cg_root = smp_topo_alloc(1);
854 x86topo_add_sched_group(&topo_root, cg_root);
859 cpu_alloc(void *dummy __unused)
862 * Dynamically allocate the arrays that depend on the
865 cpu_info = malloc(sizeof(*cpu_info) * (max_apic_id + 1), M_CPUS,
867 apic_cpuids = malloc(sizeof(*apic_cpuids) * (max_apic_id + 1), M_CPUS,
870 SYSINIT(cpu_alloc, SI_SUB_CPU, SI_ORDER_FIRST, cpu_alloc, NULL);
873 * Add a logical CPU to the topology.
876 cpu_add(u_int apic_id, char boot_cpu)
879 if (apic_id > max_apic_id) {
880 panic("SMP: APIC ID %d too high", apic_id);
883 KASSERT(cpu_info[apic_id].cpu_present == 0, ("CPU %u added twice",
885 cpu_info[apic_id].cpu_present = 1;
887 KASSERT(boot_cpu_id == -1,
888 ("CPU %u claims to be BSP, but CPU %u already is", apic_id,
890 boot_cpu_id = apic_id;
891 cpu_info[apic_id].cpu_bsp = 1;
894 printf("SMP: Added CPU %u (%s)\n", apic_id, boot_cpu ? "BSP" :
899 cpu_mp_setmaxid(void)
903 * mp_ncpus and mp_maxid should be already set by calls to cpu_add().
904 * If there were no calls to cpu_add() assume this is a UP system.
915 * Always record BSP in CPU map so that the mbuf init code works
918 CPU_SETOF(0, &all_cpus);
919 return (mp_ncpus > 1);
922 /* Allocate memory for the AP trampoline. */
924 alloc_ap_trampoline(vm_paddr_t *physmap, unsigned int *physmap_idx)
930 for (i = *physmap_idx; i <= *physmap_idx; i -= 2) {
932 * Find a memory region big enough and below the 1MB boundary
933 * for the trampoline code.
934 * NB: needs to be page aligned.
936 if (physmap[i] >= MiB(1) ||
937 (trunc_page(physmap[i + 1]) - round_page(physmap[i])) <
938 round_page(bootMP_size))
943 * Try to steal from the end of the region to mimic previous
944 * behaviour, else fallback to steal from the start.
946 if (physmap[i + 1] < MiB(1)) {
947 boot_address = trunc_page(physmap[i + 1]);
948 if ((physmap[i + 1] - boot_address) < bootMP_size)
949 boot_address -= round_page(bootMP_size);
950 physmap[i + 1] = boot_address;
952 boot_address = round_page(physmap[i]);
953 physmap[i] = boot_address + round_page(bootMP_size);
955 if (physmap[i] == physmap[i + 1] && *physmap_idx != 0) {
956 memmove(&physmap[i], &physmap[i + 2],
957 sizeof(*physmap) * (*physmap_idx - i + 2));
964 boot_address = basemem * 1024 - bootMP_size;
967 "Cannot find enough space for the boot trampoline, placing it at %#x",
973 * AP CPU's call this to initialize themselves.
976 init_secondary_tail(void)
980 pmap_activate_boot(vmspace_pmap(proc0.p_vmspace));
983 * On real hardware, switch to x2apic mode if possible. Do it
984 * after aps_ready was signalled, to avoid manipulating the
985 * mode while BSP might still want to send some IPI to us
986 * (second startup IPI is ignored on modern hardware etc).
990 /* Initialize the PAT MSR. */
993 /* set up CPU registers and state */
999 /* set up FPU state on the AP */
1006 if (cpu_ops.cpu_init)
1009 /* A quick check from sanity claus */
1010 cpuid = PCPU_GET(cpuid);
1011 if (PCPU_GET(apic_id) != lapic_id()) {
1012 printf("SMP: cpuid = %d\n", cpuid);
1013 printf("SMP: actual apic_id = %d\n", lapic_id());
1014 printf("SMP: correct apic_id = %d\n", PCPU_GET(apic_id));
1015 panic("cpuid mismatch! boom!!");
1018 /* Initialize curthread. */
1019 KASSERT(PCPU_GET(idlethread) != NULL, ("no idle thread"));
1020 PCPU_SET(curthread, PCPU_GET(idlethread));
1022 mtx_lock_spin(&ap_boot_mtx);
1026 /* Init local apic for irq's */
1029 /* Set memory range attributes for this CPU to match the BSP */
1030 mem_range_AP_init();
1034 CTR1(KTR_SMP, "SMP: AP CPU #%d Launched", cpuid);
1036 printf("SMP: AP CPU #%d Launched!\n", cpuid);
1038 printf("%s%d%s", smp_cpus == 2 ? "Launching APs: " : "",
1039 cpuid, smp_cpus == mp_ncpus ? "\n" : " ");
1041 /* Determine if we are a logical CPU. */
1042 if (cpu_info[PCPU_GET(apic_id)].cpu_hyperthread)
1043 CPU_SET(cpuid, &logical_cpus_mask);
1048 if (smp_cpus == mp_ncpus) {
1049 /* enable IPI's, tlb shootdown, freezes etc */
1050 atomic_store_rel_int(&smp_started, 1);
1055 * Enable global pages TLB extension
1056 * This also implicitly flushes the TLB
1058 load_cr4(rcr4() | CR4_PGE);
1059 if (pmap_pcid_enabled)
1060 load_cr4(rcr4() | CR4_PCIDE);
1066 mtx_unlock_spin(&ap_boot_mtx);
1068 /* Wait until all the AP's are up. */
1069 while (atomic_load_acq_int(&smp_started) == 0)
1072 #ifndef EARLY_AP_STARTUP
1073 /* Start per-CPU event timers. */
1074 cpu_initclocks_ap();
1079 panic("scheduler returned us to %s", __func__);
1084 smp_after_idle_runnable(void *arg __unused)
1086 struct thread *idle_td;
1089 for (cpu = 1; cpu < mp_ncpus; cpu++) {
1090 idle_td = pcpu_find(cpu)->pc_idlethread;
1091 while (atomic_load_int(&idle_td->td_lastcpu) == NOCPU &&
1092 atomic_load_int(&idle_td->td_oncpu) == NOCPU)
1094 kmem_free((vm_offset_t)bootstacks[cpu], kstack_pages *
1098 SYSINIT(smp_after_idle_runnable, SI_SUB_SMP, SI_ORDER_ANY,
1099 smp_after_idle_runnable, NULL);
1102 * We tell the I/O APIC code about all the CPUs we want to receive
1103 * interrupts. If we don't want certain CPUs to receive IRQs we
1104 * can simply not tell the I/O APIC code about them in this function.
1105 * We also do not tell it about the BSP since it tells itself about
1106 * the BSP internally to work with UP kernels and on UP machines.
1109 set_interrupt_apic_ids(void)
1113 for (i = 0; i < MAXCPU; i++) {
1114 apic_id = cpu_apic_ids[i];
1117 if (cpu_info[apic_id].cpu_bsp)
1119 if (cpu_info[apic_id].cpu_disabled)
1122 /* Don't let hyperthreads service interrupts. */
1123 if (cpu_info[apic_id].cpu_hyperthread)
1131 #ifdef COUNT_XINVLTLB_HITS
1132 u_int xhits_gbl[MAXCPU];
1133 u_int xhits_pg[MAXCPU];
1134 u_int xhits_rng[MAXCPU];
1135 static SYSCTL_NODE(_debug, OID_AUTO, xhits, CTLFLAG_RW, 0, "");
1136 SYSCTL_OPAQUE(_debug_xhits, OID_AUTO, global, CTLFLAG_RW, &xhits_gbl,
1137 sizeof(xhits_gbl), "IU", "");
1138 SYSCTL_OPAQUE(_debug_xhits, OID_AUTO, page, CTLFLAG_RW, &xhits_pg,
1139 sizeof(xhits_pg), "IU", "");
1140 SYSCTL_OPAQUE(_debug_xhits, OID_AUTO, range, CTLFLAG_RW, &xhits_rng,
1141 sizeof(xhits_rng), "IU", "");
1146 u_int ipi_range_size;
1147 SYSCTL_INT(_debug_xhits, OID_AUTO, ipi_global, CTLFLAG_RW, &ipi_global, 0, "");
1148 SYSCTL_INT(_debug_xhits, OID_AUTO, ipi_page, CTLFLAG_RW, &ipi_page, 0, "");
1149 SYSCTL_INT(_debug_xhits, OID_AUTO, ipi_range, CTLFLAG_RW, &ipi_range, 0, "");
1150 SYSCTL_INT(_debug_xhits, OID_AUTO, ipi_range_size, CTLFLAG_RW, &ipi_range_size,
1152 #endif /* COUNT_XINVLTLB_HITS */
1155 * Init and startup IPI.
1158 ipi_startup(int apic_id, int vector)
1162 * This attempts to follow the algorithm described in the
1163 * Intel Multiprocessor Specification v1.4 in section B.4.
1164 * For each IPI, we allow the local APIC ~20us to deliver the
1165 * IPI. If that times out, we panic.
1169 * first we do an INIT IPI: this INIT IPI might be run, resetting
1170 * and running the target CPU. OR this INIT IPI might be latched (P5
1171 * bug), CPU waiting for STARTUP IPI. OR this INIT IPI might be
1174 lapic_ipi_raw(APIC_DEST_DESTFLD | APIC_TRIGMOD_LEVEL |
1175 APIC_LEVEL_ASSERT | APIC_DESTMODE_PHY | APIC_DELMODE_INIT, apic_id);
1176 lapic_ipi_wait(100);
1178 /* Explicitly deassert the INIT IPI. */
1179 lapic_ipi_raw(APIC_DEST_DESTFLD | APIC_TRIGMOD_LEVEL |
1180 APIC_LEVEL_DEASSERT | APIC_DESTMODE_PHY | APIC_DELMODE_INIT,
1183 DELAY(10000); /* wait ~10mS */
1186 * next we do a STARTUP IPI: the previous INIT IPI might still be
1187 * latched, (P5 bug) this 1st STARTUP would then terminate
1188 * immediately, and the previously started INIT IPI would continue. OR
1189 * the previous INIT IPI has already run. and this STARTUP IPI will
1190 * run. OR the previous INIT IPI was ignored. and this STARTUP IPI
1193 lapic_ipi_raw(APIC_DEST_DESTFLD | APIC_TRIGMOD_EDGE |
1194 APIC_LEVEL_ASSERT | APIC_DESTMODE_PHY | APIC_DELMODE_STARTUP |
1196 if (!lapic_ipi_wait(100))
1197 panic("Failed to deliver first STARTUP IPI to APIC %d",
1199 DELAY(200); /* wait ~200uS */
1202 * finally we do a 2nd STARTUP IPI: this 2nd STARTUP IPI should run IF
1203 * the previous STARTUP IPI was cancelled by a latched INIT IPI. OR
1204 * this STARTUP IPI will be ignored, as only ONE STARTUP IPI is
1205 * recognized after hardware RESET or INIT IPI.
1207 lapic_ipi_raw(APIC_DEST_DESTFLD | APIC_TRIGMOD_EDGE |
1208 APIC_LEVEL_ASSERT | APIC_DESTMODE_PHY | APIC_DELMODE_STARTUP |
1210 if (!lapic_ipi_wait(100))
1211 panic("Failed to deliver second STARTUP IPI to APIC %d",
1214 DELAY(200); /* wait ~200uS */
1218 * Send an IPI to specified CPU handling the bitmap logic.
1221 ipi_send_cpu(int cpu, u_int ipi)
1223 u_int bitmap, old_pending, new_pending;
1225 KASSERT(cpu_apic_ids[cpu] != -1, ("IPI to non-existent CPU %d", cpu));
1227 if (IPI_IS_BITMAPED(ipi)) {
1229 ipi = IPI_BITMAP_VECTOR;
1231 old_pending = cpu_ipi_pending[cpu];
1232 new_pending = old_pending | bitmap;
1233 } while (!atomic_cmpset_int(&cpu_ipi_pending[cpu],
1234 old_pending, new_pending));
1238 lapic_ipi_vectored(ipi, cpu_apic_ids[cpu]);
1242 ipi_bitmap_handler(struct trapframe frame)
1244 struct trapframe *oldframe;
1246 int cpu = PCPU_GET(cpuid);
1251 td->td_intr_nesting_level++;
1252 oldframe = td->td_intr_frame;
1253 td->td_intr_frame = &frame;
1254 ipi_bitmap = atomic_readandclear_int(&cpu_ipi_pending[cpu]);
1255 if (ipi_bitmap & (1 << IPI_PREEMPT)) {
1257 (*ipi_preempt_counts[cpu])++;
1261 if (ipi_bitmap & (1 << IPI_AST)) {
1263 (*ipi_ast_counts[cpu])++;
1265 /* Nothing to do for AST */
1267 if (ipi_bitmap & (1 << IPI_HARDCLOCK)) {
1269 (*ipi_hardclock_counts[cpu])++;
1273 td->td_intr_frame = oldframe;
1274 td->td_intr_nesting_level--;
1279 * send an IPI to a set of cpus.
1282 ipi_selected(cpuset_t cpus, u_int ipi)
1287 * IPI_STOP_HARD maps to a NMI and the trap handler needs a bit
1288 * of help in order to understand what is the source.
1289 * Set the mask of receiving CPUs for this purpose.
1291 if (ipi == IPI_STOP_HARD)
1292 CPU_OR_ATOMIC(&ipi_stop_nmi_pending, &cpus);
1294 while ((cpu = CPU_FFS(&cpus)) != 0) {
1296 CPU_CLR(cpu, &cpus);
1297 CTR3(KTR_SMP, "%s: cpu: %d ipi: %x", __func__, cpu, ipi);
1298 ipi_send_cpu(cpu, ipi);
1303 * send an IPI to a specific CPU.
1306 ipi_cpu(int cpu, u_int ipi)
1310 * IPI_STOP_HARD maps to a NMI and the trap handler needs a bit
1311 * of help in order to understand what is the source.
1312 * Set the mask of receiving CPUs for this purpose.
1314 if (ipi == IPI_STOP_HARD)
1315 CPU_SET_ATOMIC(cpu, &ipi_stop_nmi_pending);
1317 CTR3(KTR_SMP, "%s: cpu: %d ipi: %x", __func__, cpu, ipi);
1318 ipi_send_cpu(cpu, ipi);
1322 * send an IPI to all CPUs EXCEPT myself
1325 ipi_all_but_self(u_int ipi)
1327 cpuset_t other_cpus;
1329 other_cpus = all_cpus;
1330 CPU_CLR(PCPU_GET(cpuid), &other_cpus);
1331 if (IPI_IS_BITMAPED(ipi)) {
1332 ipi_selected(other_cpus, ipi);
1337 * IPI_STOP_HARD maps to a NMI and the trap handler needs a bit
1338 * of help in order to understand what is the source.
1339 * Set the mask of receiving CPUs for this purpose.
1341 if (ipi == IPI_STOP_HARD)
1342 CPU_OR_ATOMIC(&ipi_stop_nmi_pending, &other_cpus);
1344 CTR2(KTR_SMP, "%s: ipi: %x", __func__, ipi);
1345 lapic_ipi_vectored(ipi, APIC_IPI_DEST_OTHERS);
1349 ipi_nmi_handler(void)
1354 * As long as there is not a simple way to know about a NMI's
1355 * source, if the bitmask for the current CPU is present in
1356 * the global pending bitword an IPI_STOP_HARD has been issued
1357 * and should be handled.
1359 cpuid = PCPU_GET(cpuid);
1360 if (!CPU_ISSET(cpuid, &ipi_stop_nmi_pending))
1363 CPU_CLR_ATOMIC(cpuid, &ipi_stop_nmi_pending);
1371 nmi_call_kdb_smp(u_int type, struct trapframe *frame)
1376 cpu = PCPU_GET(cpuid);
1377 if (atomic_cmpset_acq_int(&nmi_kdb_lock, 0, 1)) {
1378 nmi_call_kdb(cpu, type, frame);
1381 savectx(&stoppcbs[cpu]);
1382 CPU_SET_ATOMIC(cpu, &stopped_cpus);
1383 while (!atomic_cmpset_acq_int(&nmi_kdb_lock, 0, 1))
1387 atomic_store_rel_int(&nmi_kdb_lock, 0);
1389 cpustop_handler_post(cpu);
1393 * Handle an IPI_STOP by saving our current context and spinning until we
1397 cpustop_handler(void)
1401 cpu = PCPU_GET(cpuid);
1403 savectx(&stoppcbs[cpu]);
1405 /* Indicate that we are stopped */
1406 CPU_SET_ATOMIC(cpu, &stopped_cpus);
1408 /* Wait for restart */
1409 while (!CPU_ISSET(cpu, &started_cpus))
1412 cpustop_handler_post(cpu);
1416 cpustop_handler_post(u_int cpu)
1419 CPU_CLR_ATOMIC(cpu, &started_cpus);
1420 CPU_CLR_ATOMIC(cpu, &stopped_cpus);
1423 * We don't broadcast TLB invalidations to other CPUs when they are
1424 * stopped. Hence, we clear the TLB before resuming.
1428 #if defined(__amd64__) && defined(DDB)
1429 amd64_db_resume_dbreg();
1432 if (cpu == 0 && cpustop_restartfunc != NULL) {
1433 cpustop_restartfunc();
1434 cpustop_restartfunc = NULL;
1439 * Handle an IPI_SUSPEND by saving our current context and spinning until we
1443 cpususpend_handler(void)
1447 mtx_assert(&smp_ipi_mtx, MA_NOTOWNED);
1449 cpu = PCPU_GET(cpuid);
1450 if (savectx(&susppcbs[cpu]->sp_pcb)) {
1452 fpususpend(susppcbs[cpu]->sp_fpususpend);
1454 npxsuspend(susppcbs[cpu]->sp_fpususpend);
1457 * suspended_cpus is cleared shortly after each AP is restarted
1458 * by a Startup IPI, so that the BSP can proceed to restarting
1461 * resuming_cpus gets cleared when the AP completes
1462 * initialization after having been released by the BSP.
1463 * resuming_cpus is probably not the best name for the
1464 * variable, because it is actually a set of processors that
1465 * haven't resumed yet and haven't necessarily started resuming.
1467 * Note that suspended_cpus is meaningful only for ACPI suspend
1468 * as it's not really used for Xen suspend since the APs are
1469 * automatically restored to the running state and the correct
1470 * context. For the same reason resumectx is never called in
1473 CPU_SET_ATOMIC(cpu, &suspended_cpus);
1474 CPU_SET_ATOMIC(cpu, &resuming_cpus);
1477 * Invalidate the cache after setting the global status bits.
1478 * The last AP to set its bit may end up being an Owner of the
1479 * corresponding cache line in MOESI protocol. The AP may be
1480 * stopped before the cache line is written to the main memory.
1485 fpuresume(susppcbs[cpu]->sp_fpususpend);
1487 npxresume(susppcbs[cpu]->sp_fpususpend);
1491 PCPU_SET(switchtime, 0);
1492 PCPU_SET(switchticks, ticks);
1494 /* Indicate that we have restarted and restored the context. */
1495 CPU_CLR_ATOMIC(cpu, &suspended_cpus);
1498 /* Wait for resume directive */
1499 while (!CPU_ISSET(cpu, &toresume_cpus))
1502 /* Re-apply microcode updates. */
1506 /* Finish removing the identity mapping of low memory for this AP. */
1510 if (cpu_ops.cpu_resume)
1511 cpu_ops.cpu_resume();
1517 /* Resume MCA and local APIC */
1522 /* Indicate that we are resumed */
1523 CPU_CLR_ATOMIC(cpu, &resuming_cpus);
1524 CPU_CLR_ATOMIC(cpu, &suspended_cpus);
1525 CPU_CLR_ATOMIC(cpu, &toresume_cpus);
1530 invlcache_handler(void)
1532 uint32_t generation;
1535 (*ipi_invlcache_counts[PCPU_GET(cpuid)])++;
1536 #endif /* COUNT_IPIS */
1539 * Reading the generation here allows greater parallelism
1540 * since wbinvd is a serializing instruction. Without the
1541 * temporary, we'd wait for wbinvd to complete, then the read
1542 * would execute, then the dependent write, which must then
1543 * complete before return from interrupt.
1545 generation = smp_tlb_generation;
1547 PCPU_SET(smp_tlb_done, generation);
1551 * This is called once the rest of the system is up and running and we're
1552 * ready to let the AP's out of the pen.
1555 release_aps(void *dummy __unused)
1560 atomic_store_rel_int(&aps_ready, 1);
1561 while (smp_started == 0)
1564 SYSINIT(start_aps, SI_SUB_SMP, SI_ORDER_FIRST, release_aps, NULL);
1568 * Setup interrupt counters for IPI handlers.
1571 mp_ipi_intrcnt(void *dummy)
1577 snprintf(buf, sizeof(buf), "cpu%d:invltlb", i);
1578 intrcnt_add(buf, &ipi_invltlb_counts[i]);
1579 snprintf(buf, sizeof(buf), "cpu%d:invlrng", i);
1580 intrcnt_add(buf, &ipi_invlrng_counts[i]);
1581 snprintf(buf, sizeof(buf), "cpu%d:invlpg", i);
1582 intrcnt_add(buf, &ipi_invlpg_counts[i]);
1583 snprintf(buf, sizeof(buf), "cpu%d:invlcache", i);
1584 intrcnt_add(buf, &ipi_invlcache_counts[i]);
1585 snprintf(buf, sizeof(buf), "cpu%d:preempt", i);
1586 intrcnt_add(buf, &ipi_preempt_counts[i]);
1587 snprintf(buf, sizeof(buf), "cpu%d:ast", i);
1588 intrcnt_add(buf, &ipi_ast_counts[i]);
1589 snprintf(buf, sizeof(buf), "cpu%d:rendezvous", i);
1590 intrcnt_add(buf, &ipi_rendezvous_counts[i]);
1591 snprintf(buf, sizeof(buf), "cpu%d:hardclock", i);
1592 intrcnt_add(buf, &ipi_hardclock_counts[i]);
1595 SYSINIT(mp_ipi_intrcnt, SI_SUB_INTR, SI_ORDER_MIDDLE, mp_ipi_intrcnt, NULL);
1599 * Flush the TLB on other CPU's
1602 /* Variables needed for SMP tlb shootdown. */
1603 vm_offset_t smp_tlb_addr1, smp_tlb_addr2;
1604 pmap_t smp_tlb_pmap;
1605 volatile uint32_t smp_tlb_generation;
1608 #define read_eflags() read_rflags()
1612 smp_targeted_tlb_shootdown(cpuset_t mask, u_int vector, pmap_t pmap,
1613 vm_offset_t addr1, vm_offset_t addr2)
1615 cpuset_t other_cpus;
1616 volatile uint32_t *p_cpudone;
1617 uint32_t generation;
1620 /* It is not necessary to signal other CPUs while in the debugger. */
1621 if (kdb_active || panicstr != NULL)
1625 * Check for other cpus. Return if none.
1627 if (CPU_ISFULLSET(&mask)) {
1631 CPU_CLR(PCPU_GET(cpuid), &mask);
1632 if (CPU_EMPTY(&mask))
1636 if (!(read_eflags() & PSL_I))
1637 panic("%s: interrupts disabled", __func__);
1638 mtx_lock_spin(&smp_ipi_mtx);
1639 smp_tlb_addr1 = addr1;
1640 smp_tlb_addr2 = addr2;
1641 smp_tlb_pmap = pmap;
1642 generation = ++smp_tlb_generation;
1643 if (CPU_ISFULLSET(&mask)) {
1644 ipi_all_but_self(vector);
1645 other_cpus = all_cpus;
1646 CPU_CLR(PCPU_GET(cpuid), &other_cpus);
1649 while ((cpu = CPU_FFS(&mask)) != 0) {
1651 CPU_CLR(cpu, &mask);
1652 CTR3(KTR_SMP, "%s: cpu: %d ipi: %x", __func__,
1654 ipi_send_cpu(cpu, vector);
1657 while ((cpu = CPU_FFS(&other_cpus)) != 0) {
1659 CPU_CLR(cpu, &other_cpus);
1660 p_cpudone = &cpuid_to_pcpu[cpu]->pc_smp_tlb_done;
1661 while (*p_cpudone != generation)
1664 mtx_unlock_spin(&smp_ipi_mtx);
1668 smp_masked_invltlb(cpuset_t mask, pmap_t pmap)
1672 smp_targeted_tlb_shootdown(mask, IPI_INVLTLB, pmap, 0, 0);
1673 #ifdef COUNT_XINVLTLB_HITS
1680 smp_masked_invlpg(cpuset_t mask, vm_offset_t addr, pmap_t pmap)
1684 smp_targeted_tlb_shootdown(mask, IPI_INVLPG, pmap, addr, 0);
1685 #ifdef COUNT_XINVLTLB_HITS
1692 smp_masked_invlpg_range(cpuset_t mask, vm_offset_t addr1, vm_offset_t addr2,
1697 smp_targeted_tlb_shootdown(mask, IPI_INVLRNG, pmap,
1699 #ifdef COUNT_XINVLTLB_HITS
1701 ipi_range_size += (addr2 - addr1) / PAGE_SIZE;
1707 smp_cache_flush(void)
1711 smp_targeted_tlb_shootdown(all_cpus, IPI_INVLCACHE, NULL,
1717 * Handlers for TLB related IPIs
1720 invltlb_handler(void)
1722 uint32_t generation;
1724 #ifdef COUNT_XINVLTLB_HITS
1725 xhits_gbl[PCPU_GET(cpuid)]++;
1726 #endif /* COUNT_XINVLTLB_HITS */
1728 (*ipi_invltlb_counts[PCPU_GET(cpuid)])++;
1729 #endif /* COUNT_IPIS */
1732 * Reading the generation here allows greater parallelism
1733 * since invalidating the TLB is a serializing operation.
1735 generation = smp_tlb_generation;
1736 if (smp_tlb_pmap == kernel_pmap)
1742 PCPU_SET(smp_tlb_done, generation);
1746 invlpg_handler(void)
1748 uint32_t generation;
1750 #ifdef COUNT_XINVLTLB_HITS
1751 xhits_pg[PCPU_GET(cpuid)]++;
1752 #endif /* COUNT_XINVLTLB_HITS */
1754 (*ipi_invlpg_counts[PCPU_GET(cpuid)])++;
1755 #endif /* COUNT_IPIS */
1757 generation = smp_tlb_generation; /* Overlap with serialization */
1759 if (smp_tlb_pmap == kernel_pmap)
1761 invlpg(smp_tlb_addr1);
1762 PCPU_SET(smp_tlb_done, generation);
1766 invlrng_handler(void)
1768 vm_offset_t addr, addr2;
1769 uint32_t generation;
1771 #ifdef COUNT_XINVLTLB_HITS
1772 xhits_rng[PCPU_GET(cpuid)]++;
1773 #endif /* COUNT_XINVLTLB_HITS */
1775 (*ipi_invlrng_counts[PCPU_GET(cpuid)])++;
1776 #endif /* COUNT_IPIS */
1778 addr = smp_tlb_addr1;
1779 addr2 = smp_tlb_addr2;
1780 generation = smp_tlb_generation; /* Overlap with serialization */
1782 if (smp_tlb_pmap == kernel_pmap)
1787 } while (addr < addr2);
1789 PCPU_SET(smp_tlb_done, generation);