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>
28 #include <palacios/vmm_vnet.h>
31 #include <palacios/svm.h>
34 #include <palacios/vmx.h>
38 v3_cpu_arch_t v3_cpu_types[CONFIG_MAX_CPUS];
39 struct v3_os_hooks * os_hooks = NULL;
41 int v3_dbg_enable = 0;
44 static struct guest_info * allocate_guest() {
45 void * info = V3_Malloc(sizeof(struct guest_info));
46 memset(info, 0, sizeof(struct guest_info));
51 static void init_cpu(void * arg) {
52 uint32_t cpu_id = (uint32_t)(addr_t)arg;
55 if (v3_is_svm_capable()) {
56 PrintDebug("Machine is SVM Capable\n");
57 v3_init_svm_cpu(cpu_id);
62 if (v3_is_vmx_capable()) {
63 PrintDebug("Machine is VMX Capable\n");
64 v3_init_vmx_cpu(cpu_id);
69 PrintError("CPU has no virtualization Extensions\n");
75 void Init_V3(struct v3_os_hooks * hooks, int num_cpus) {
78 V3_Print("V3 Print statement to fix a Kitten page fault bug\n");
80 // Set global variables.
83 for (i = 0; i < CONFIG_MAX_CPUS; i++) {
84 v3_cpu_types[i] = V3_INVALID_CPU;
87 // Register all the possible device types
91 v3_init_instrumentation();
94 if ((hooks) && (hooks->call_on_cpu)) {
96 for (i = 0; i < num_cpus; i++) {
98 V3_Print("Initializing VMM extensions on cpu %d\n", i);
99 hooks->call_on_cpu(i, &init_cpu, (void *)(addr_t)i);
109 v3_cpu_arch_t v3_get_cpu_type(int cpu_id) {
110 return v3_cpu_types[cpu_id];
114 struct guest_info * v3_create_vm(void * cfg) {
115 struct guest_info * info = allocate_guest();
118 PrintError("Could not allocate Guest\n");
122 if (v3_config_guest(info, cfg) == -1) {
123 PrintError("Could not configure guest\n");
131 int v3_start_vm(struct guest_info * info, unsigned int cpu_mask) {
133 info->cpu_id = v3_get_cpu_id();
135 V3_Print("V3 -- Starting VM\n");
137 switch (v3_cpu_types[info->cpu_id]) {
140 case V3_SVM_REV3_CPU:
141 return v3_start_svm_guest(info);
147 return v3_start_vmx_guest(info);
151 PrintError("Attemping to enter a guest on an invalid CPU\n");
161 v3_cpu_mode_t v3_get_host_cpu_mode() {
171 cr4 = (struct cr4_32 *)&(cr4_val);
174 return PROTECTED_PAE;
182 v3_cpu_mode_t v3_get_host_cpu_mode() {
189 #define V3_Yield(addr) \
191 extern struct v3_os_hooks * os_hooks; \
192 if ((os_hooks) && (os_hooks)->yield_cpu) { \
193 (os_hooks)->yield_cpu(); \
199 void v3_yield_cond(struct guest_info * info) {
203 if (cur_cycle > (info->yield_start_cycle + info->yield_cycle_period)) {
206 PrintDebug("Conditional Yield (cur_cyle=%p, start_cycle=%p, period=%p)\n",
207 (void *)cur_cycle, (void *)info->yield_start_cycle, (void *)info->yield_cycle_period);
210 rdtscll(info->yield_start_cycle);
216 * unconditional cpu yield
217 * if the yielding thread is a guest context, the guest quantum is reset on resumption
218 * Non guest context threads should call this function with a NULL argument
220 void v3_yield(struct guest_info * info) {
224 rdtscll(info->yield_start_cycle);
231 void v3_print_cond(const char * fmt, ...) {
232 if (v3_dbg_enable == 1) {
237 vsnprintf(buf, 2048, fmt, ap);
247 void v3_interrupt_cpu(struct guest_info * info, int logical_cpu) {
248 extern struct v3_os_hooks * os_hooks;
250 if ((os_hooks) && (os_hooks)->interrupt_cpu) {
251 (os_hooks)->interrupt_cpu(info, logical_cpu);
257 unsigned int v3_get_cpu_id() {
258 extern struct v3_os_hooks * os_hooks;
259 unsigned int ret = (unsigned int)-1;
261 if ((os_hooks) && (os_hooks)->get_cpu) {
262 ret = os_hooks->get_cpu();
270 int v3_vm_enter(struct guest_info * info) {
271 switch (v3_cpu_types[info->cpu_id]) {
274 case V3_SVM_REV3_CPU:
275 return v3_svm_enter(info);
281 return v3_vmx_enter(info);
285 PrintError("Attemping to enter a guest on an invalid CPU\n");