2 * This file is part of the Palacios Virtual Machine Monitor developed
3 * by the V3VEE Project with funding from the United States National
4 * Science Foundation and the Department of Energy.
6 * The V3VEE Project is a joint project between Northwestern University
7 * and the University of New Mexico. You can find out more at
10 * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
11 * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
12 * All rights reserved.
14 * Author: Jack Lange <jarusl@cs.northwestern.edu>
16 * This is free software. You are permitted to use,
17 * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
20 #include <palacios/vmm.h>
21 #include <palacios/vmm_intr.h>
22 #include <palacios/vmm_config.h>
23 #include <palacios/vm_guest.h>
24 #include <palacios/vmm_instrument.h>
25 #include <palacios/vmm_ctrl_regs.h>
26 #include <palacios/vmm_lowlevel.h>
27 #include <palacios/vmm_sprintf.h>
30 #include <palacios/svm.h>
33 #include <palacios/vmx.h>
37 #include <palacios/vmm_vnet.h>
41 v3_cpu_arch_t v3_cpu_types[CONFIG_MAX_CPUS];
42 struct v3_os_hooks * os_hooks = NULL;
44 int v3_dbg_enable = 0;
48 static void init_cpu(void * arg) {
49 uint32_t cpu_id = (uint32_t)(addr_t)arg;
52 if (v3_is_svm_capable()) {
53 PrintDebug("Machine is SVM Capable\n");
54 v3_init_svm_cpu(cpu_id);
59 if (v3_is_vmx_capable()) {
60 PrintDebug("Machine is VMX Capable\n");
61 v3_init_vmx_cpu(cpu_id);
66 PrintError("CPU has no virtualization Extensions\n");
71 static void deinit_cpu(void * arg) {
72 // uint32_t cpu_id = (uint32_t)(addr_t)arg;
75 if (v3_is_svm_capable()) {
76 PrintDebug("Machine is SVM Capable\n");
77 //v3_deinit_svm_cpu(cpu_id);
82 if (v3_is_vmx_capable()) {
83 PrintDebug("Machine is VMX Capable\n");
84 //v3_deinit_vmx_cpu(cpu_id);
89 PrintError("CPU has no virtualization Extensions\n");
95 void Init_V3(struct v3_os_hooks * hooks, int num_cpus) {
98 V3_Print("V3 Print statement to fix a Kitten page fault bug\n");
100 // Set global variables.
103 for (i = 0; i < CONFIG_MAX_CPUS; i++) {
104 v3_cpu_types[i] = V3_INVALID_CPU;
107 // Register all the possible device types
110 // Register all shadow paging handlers
111 V3_init_shdw_paging();
118 #ifdef CONFIG_INSTRUMENT_VMM
119 v3_init_instrumentation();
128 #ifdef CONFIG_MULTITHREAD_OS
129 if ((hooks) && (hooks->call_on_cpu)) {
131 for (i = 0; i < num_cpus; i++) {
133 V3_Print("Initializing VMM extensions on cpu %d\n", i);
134 hooks->call_on_cpu(i, &init_cpu, (void *)(addr_t)i);
148 V3_deinit_shdw_paging();
156 #ifdef CONFIG_INSTRUMENT_VMM
157 v3_deinit_instrumentation();
164 #ifdef CONFIG_MULTITHREAD_OS
165 if ((hooks) && (hooks->call_on_cpu)) {
166 for (i = 0; i < CONFIG_MAX_CPUS; i++) {
167 if (v3_cpu_types[i] != V3_INVALID_CPU) {
181 v3_cpu_arch_t v3_get_cpu_type(int cpu_id) {
182 return v3_cpu_types[cpu_id];
186 struct v3_vm_info * v3_create_vm(void * cfg, void * priv_data, char * name) {
187 struct v3_vm_info * vm = v3_config_guest(cfg, priv_data);
189 V3_Print("CORE 0 RIP=%p\n", (void *)(addr_t)(vm->cores[0].rip));
193 PrintError("Could not configure guest\n");
199 } else if (strlen(name) >= 128) {
200 PrintError("VM name is too long. Will be truncated to 128 chars.\n");
203 memset(vm->name, 0, 128);
204 strncpy(vm->name, name, 127);
210 static int start_core(void * p)
212 struct guest_info * core = (struct guest_info *)p;
215 PrintDebug("core %u: in start_core (RIP=%p)\n",
216 core->cpu_id, (void *)(addr_t)core->rip);
219 // JRL: Whoa WTF? cpu_types are tied to the vcoreID????
220 switch (v3_cpu_types[core->cpu_id]) {
223 case V3_SVM_REV3_CPU:
224 return v3_start_svm_guest(core);
230 return v3_start_vmx_guest(core);
234 PrintError("Attempting to enter a guest on an invalid CPU\n");
242 // For the moment very ugly. Eventually we will shift the cpu_mask to an arbitrary sized type...
243 #ifdef CONFIG_MULTITHREAD_OS
250 int v3_start_vm(struct v3_vm_info * vm, unsigned int cpu_mask) {
252 #ifdef CONFIG_MULTITHREAD_OS
255 uint8_t * core_mask = (uint8_t *)&cpu_mask; // This is to make future expansion easier
256 uint32_t avail_cores = 0;
260 /// CHECK IF WE ARE MULTICORE ENABLED....
262 V3_Print("V3 -- Starting VM (%u cores)\n", vm->num_cores);
263 V3_Print("CORE 0 RIP=%p\n", (void *)(addr_t)(vm->cores[0].rip));
265 // Check that enough cores are present in the mask to handle vcores
266 for (i = 0; i < MAX_CORES; i++) {
270 if (core_mask[major] & (0x1 << minor)) {
276 if (vm->num_cores > avail_cores) {
277 PrintError("Attempted to start a VM with too many cores (vm->num_cores = %d, avail_cores = %d, MAX=%d)\n", vm->num_cores, avail_cores, MAX_CORES);
282 #ifdef CONFIG_MULTITHREAD_OS
283 // spawn off new threads, for other cores
284 for (i = 0, vcore_id = 1; (i < MAX_CORES) && (vcore_id < vm->num_cores); i++) {
287 void * core_thread = NULL;
288 struct guest_info * core = &(vm->cores[vcore_id]);
290 if (i == V3_Get_CPU()) {
291 // We skip the local CPU, because it is reserved for vcore 0
296 if ((core_mask[major] & (0x1 << minor)) == 0) {
297 // cpuid not set in cpu_mask
301 PrintDebug("Starting virtual core %u on logical core %u\n",
304 sprintf(core->exec_name, "%s-%u", vm->name, vcore_id);
306 PrintDebug("run: core=%u, func=0x%p, arg=0x%p, name=%s\n",
307 i, start_core, core, core->exec_name);
309 // TODO: actually manage these threads instead of just launching them
310 core_thread = V3_CREATE_THREAD_ON_CPU(i, start_core, core, core->exec_name);
312 if (core_thread == NULL) {
313 PrintError("Thread launch failed\n");
321 sprintf(vm->cores[0].exec_name, "%s", vm->name);
323 if (start_core(&(vm->cores[0])) != 0) {
324 PrintError("Error starting VM core 0\n");
336 int v3_stop_vm(struct v3_vm_info * vm) {
338 vm->run_state = VM_STOPPED;
340 // force exit all cores via a cross call/IPI
344 int still_running = 0;
346 for (i = 0; i < vm->num_cores; i++) {
347 if (vm->cores[i].core_run_state != CORE_STOPPED) {
352 if (still_running == 0) {
356 V3_Print("Yielding\n");
361 V3_Print("VM stopped. Returning\n");
367 int v3_free_vm(struct v3_vm_info * vm) {
369 // deinitialize guest (free memory, etc...)
371 v3_free_vm_devices(vm);
374 for (i = 0; i < vm->num_cores; i++) {
375 v3_free_core(&(vm->cores[i]));
379 v3_free_vm_internal(vm);
391 v3_cpu_mode_t v3_get_host_cpu_mode() {
401 cr4 = (struct cr4_32 *)&(cr4_val);
404 return PROTECTED_PAE;
412 v3_cpu_mode_t v3_get_host_cpu_mode() {
419 #define V3_Yield(addr) \
421 extern struct v3_os_hooks * os_hooks; \
422 if ((os_hooks) && (os_hooks)->yield_cpu) { \
423 (os_hooks)->yield_cpu(); \
429 void v3_yield_cond(struct guest_info * info) {
431 cur_cycle = v3_get_host_time(&info->time_state);
433 if (cur_cycle > (info->yield_start_cycle + info->vm_info->yield_cycle_period)) {
436 PrintDebug("Conditional Yield (cur_cyle=%p, start_cycle=%p, period=%p)\n",
437 (void *)cur_cycle, (void *)info->yield_start_cycle, (void *)info->yield_cycle_period);
440 info->yield_start_cycle = v3_get_host_time(&info->time_state);
446 * unconditional cpu yield
447 * if the yielding thread is a guest context, the guest quantum is reset on resumption
448 * Non guest context threads should call this function with a NULL argument
450 void v3_yield(struct guest_info * info) {
454 info->yield_start_cycle = v3_get_host_time(&info->time_state);
461 void v3_print_cond(const char * fmt, ...) {
462 if (v3_dbg_enable == 1) {
467 vsnprintf(buf, 2048, fmt, ap);
475 #ifdef CONFIG_MULTITHREAD_OS
477 void v3_interrupt_cpu(struct v3_vm_info * vm, int logical_cpu, int vector) {
478 extern struct v3_os_hooks * os_hooks;
480 if ((os_hooks) && (os_hooks)->interrupt_cpu) {
481 (os_hooks)->interrupt_cpu(vm, logical_cpu, vector);
488 int v3_vm_enter(struct guest_info * info) {
489 switch (v3_cpu_types[info->cpu_id]) {
492 case V3_SVM_REV3_CPU:
493 return v3_svm_enter(info);
499 return v3_vmx_enter(info);
503 PrintError("Attemping to enter a guest on an invalid CPU\n");