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>
29 #include <palacios/svm.h>
32 #include <palacios/vmx.h>
36 v3_cpu_arch_t v3_cpu_types[CONFIG_MAX_CPUS];
37 struct v3_os_hooks * os_hooks = NULL;
41 static struct guest_info * allocate_guest() {
42 void * info = V3_Malloc(sizeof(struct guest_info));
43 memset(info, 0, sizeof(struct guest_info));
50 struct v3_ctrl_ops * vmm_ops;
53 static void init_cpu(void * arg) {
54 struct vmm_init_arg * vmm_arg = (struct vmm_init_arg *)arg;
55 int cpu_id = vmm_arg->cpu_id;
56 struct v3_ctrl_ops * vmm_ops = vmm_arg->vmm_ops;
59 if (v3_is_svm_capable()) {
60 PrintDebug("Machine is SVM Capable\n");
61 v3_init_svm_cpu(cpu_id);
64 v3_init_svm_hooks(vmm_ops);
69 if (v3_is_vmx_capable()) {
70 PrintDebug("Machine is VMX Capable\n");
71 v3_init_vmx_cpu(cpu_id);
74 v3_init_vmx_hooks(vmm_ops);
79 PrintError("CPU has no virtualization Extensions\n");
85 void Init_V3(struct v3_os_hooks * hooks, struct v3_ctrl_ops * vmm_ops, int num_cpus) {
87 struct vmm_init_arg arg;
88 arg.vmm_ops = vmm_ops;
90 // Set global variables.
93 for (i = 0; i < CONFIG_MAX_CPUS; i++) {
94 v3_cpu_types[i] = V3_INVALID_CPU;
97 // Register all the possible device types
101 #ifdef INSTRUMENT_VMM
102 v3_init_instrumentation();
105 vmm_ops->allocate_guest = &allocate_guest;
108 if ((hooks) && (hooks->call_on_cpu)) {
110 for (i = 0; i < num_cpus; i++) {
113 V3_Print("Initializing VMM extensions on cpu %d\n", i);
114 hooks->call_on_cpu(i, &init_cpu, &arg);
125 v3_cpu_mode_t v3_get_host_cpu_mode() {
135 cr4 = (struct cr4_32 *)&(cr4_val);
138 return PROTECTED_PAE;
146 v3_cpu_mode_t v3_get_host_cpu_mode() {
153 #define V3_Yield(addr) \
155 extern struct v3_os_hooks * os_hooks; \
156 if ((os_hooks) && (os_hooks)->yield_cpu) { \
157 (os_hooks)->yield_cpu(); \
162 void v3_yield_cond(struct guest_info * info) {
166 if (cur_cycle > (info->yield_start_cycle + info->yield_cycle_period)) {
169 PrintDebug("Conditional Yield (cur_cyle=%p, start_cycle=%p, period=%p)\n",
170 (void *)cur_cycle, (void *)info->yield_start_cycle, (void *)info->yield_cycle_period);
173 rdtscll(info->yield_start_cycle);
178 * unconditional cpu yield
179 * if the yielding thread is a guest context, the guest quantum is reset on resumption
180 * Non guest context threads should call this function with a NULL argument
182 void v3_yield(struct guest_info * info) {
186 rdtscll(info->yield_start_cycle);
192 void v3_interrupt_cpu(struct guest_info * info, int logical_cpu) {
193 extern struct v3_os_hooks * os_hooks;
195 if ((os_hooks) && (os_hooks)->interrupt_cpu) {
196 (os_hooks)->interrupt_cpu(info, logical_cpu);