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 virtualizationExtensions\n");
72 void Init_V3(struct v3_os_hooks * hooks, int num_cpus) {
75 V3_Print("V3 Print statement to fix a Kitten page fault bug\n");
77 // Set global variables.
80 for (i = 0; i < CONFIG_MAX_CPUS; i++) {
81 v3_cpu_types[i] = V3_INVALID_CPU;
84 // Register all the possible device types
87 // Register all shadow paging handlers
88 V3_init_shdw_paging();
95 #ifdef CONFIG_INSTRUMENT_VMM
96 v3_init_instrumentation();
104 if ((hooks) && (hooks->call_on_cpu)) {
106 for (i = 0; i < num_cpus; i++) {
108 V3_Print("Initializing VMM extensions on cpu %d\n", i);
109 hooks->call_on_cpu(i, &init_cpu, (void *)(addr_t)i);
115 v3_cpu_arch_t v3_get_cpu_type(int cpu_id) {
116 return v3_cpu_types[cpu_id];
120 struct v3_vm_info * v3_create_vm(void * cfg, void * priv_data) {
121 struct v3_vm_info * vm = v3_config_guest(cfg);
124 PrintError("Could not configure guest\n");
128 vm->host_priv_data = priv_data;
134 static int start_core(void * p)
136 struct guest_info * info = (struct guest_info *)p;
139 PrintDebug("core %u: in start_core\n", info->cpu_id);
141 // we assume here that the APs are in INIT mode
142 // and only the BSP is in REAL
143 // the per-architecture code will rely on this
147 switch (v3_cpu_types[info->cpu_id]) {
150 case V3_SVM_REV3_CPU:
151 return v3_start_svm_guest(info);
157 return v3_start_vmx_guest(info);
161 PrintError("Attempting to enter a guest on an invalid CPU\n");
169 // For the moment very ugly. Eventually we will shift the cpu_mask to an arbitrary sized type...
172 int v3_start_vm(struct v3_vm_info * vm, unsigned int cpu_mask) {
176 uint8_t * core_mask = (uint8_t *)&cpu_mask; // This is to make future expansion easier
177 uint32_t avail_cores = 0;
181 /// CHECK IF WE ARE MULTICORE ENABLED....
183 V3_Print("V3 -- Starting VM (%u cores)\n", vm->num_cores);
185 // Check that enough cores are present in the mask to handle vcores
186 for (i = 0; i < MAX_CORES; i++) {
190 if (core_mask[major] & (0x1 << minor)) {
196 if (vm->num_cores > avail_cores) {
197 PrintError("Attempted to start a VM with too many cores (MAX=%d)\n", MAX_CORES);
202 for (i = 0; (i < MAX_CORES) && (vcore_id < vm->num_cores); i++) {
205 void * core_thread = NULL;
207 if ((core_mask[major] & (0x1 << minor)) == 0) {
208 // cpuid not set in cpu_mask
212 PrintDebug("Starting virtual core %u on logical core %u\n",
215 sprintf(tname, "core%u", vcore_id);
217 PrintDebug("run: core=%u, func=0x%p, arg=0x%p, name=%s\n",
218 i, start_core, &(vm->cores[vcore_id]), tname);
220 // TODO: actually manage these threads instead of just launching them
221 core_thread = V3_CREATE_THREAD_ON_CPU(i, start_core,
222 &(vm->cores[vcore_id]), tname);
224 if (core_thread == NULL) {
225 PrintError("Thread launch failed\n");
239 v3_cpu_mode_t v3_get_host_cpu_mode() {
249 cr4 = (struct cr4_32 *)&(cr4_val);
252 return PROTECTED_PAE;
260 v3_cpu_mode_t v3_get_host_cpu_mode() {
267 #define V3_Yield(addr) \
269 extern struct v3_os_hooks * os_hooks; \
270 if ((os_hooks) && (os_hooks)->yield_cpu) { \
271 (os_hooks)->yield_cpu(); \
277 void v3_yield_cond(struct guest_info * info) {
279 cur_cycle = v3_get_host_time(&info->time_state);
281 if (cur_cycle > (info->yield_start_cycle + info->vm_info->yield_cycle_period)) {
284 PrintDebug("Conditional Yield (cur_cyle=%p, start_cycle=%p, period=%p)\n",
285 (void *)cur_cycle, (void *)info->yield_start_cycle, (void *)info->yield_cycle_period);
288 info->yield_start_cycle = v3_get_host_time(&info->time_state);
294 * unconditional cpu yield
295 * if the yielding thread is a guest context, the guest quantum is reset on resumption
296 * Non guest context threads should call this function with a NULL argument
298 void v3_yield(struct guest_info * info) {
302 info->yield_start_cycle = v3_get_host_time(&info->time_state);
309 void v3_print_cond(const char * fmt, ...) {
310 if (v3_dbg_enable == 1) {
315 vsnprintf(buf, 2048, fmt, ap);
325 void v3_interrupt_cpu(struct v3_vm_info * vm, int logical_cpu, int vector) {
326 extern struct v3_os_hooks * os_hooks;
328 if ((os_hooks) && (os_hooks)->interrupt_cpu) {
329 (os_hooks)->interrupt_cpu(vm, logical_cpu, vector);
335 unsigned int v3_get_cpu_id() {
336 extern struct v3_os_hooks * os_hooks;
337 unsigned int ret = (unsigned int)-1;
339 if ((os_hooks) && (os_hooks)->get_cpu) {
340 ret = os_hooks->get_cpu();
348 int v3_vm_enter(struct guest_info * info) {
349 switch (v3_cpu_types[info->cpu_id]) {
352 case V3_SVM_REV3_CPU:
353 return v3_svm_enter(info);
359 return v3_vmx_enter(info);
363 PrintError("Attemping to enter a guest on an invalid CPU\n");