+/*
+ * This file is part of the Palacios Virtual Machine Monitor developed
+ * by the V3VEE Project with funding from the United States National
+ * Science Foundation and the Department of Energy.
+ *
+ * The V3VEE Project is a joint project between Northwestern University
+ * and the University of New Mexico. You can find out more at
+ * http://www.v3vee.org
+ *
+ * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
+ * All rights reserved.
+ *
+ * Author: Jack Lange <jarusl@cs.northwestern.edu>
+ *
+ * This is free software. You are permitted to use,
+ * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
+ */
+
#include <palacios/vmm.h>
-#include <palacios/svm.h>
-#include <palacios/vmx.h>
#include <palacios/vmm_intr.h>
#include <palacios/vmm_config.h>
#include <palacios/vm_guest.h>
+#include <palacios/vmm_instrument.h>
+#include <palacios/vmm_ctrl_regs.h>
+#include <palacios/vmm_lowlevel.h>
+#include <palacios/vmm_sprintf.h>
+
+#ifdef CONFIG_SVM
+#include <palacios/svm.h>
+#endif
+#ifdef CONFIG_VMX
+#include <palacios/vmx.h>
+#endif
+
+#ifdef CONFIG_VNET
+#include <palacios/vmm_vnet.h>
+#endif
+
+
+v3_cpu_arch_t v3_cpu_types[CONFIG_MAX_CPUS];
+struct v3_os_hooks * os_hooks = NULL;
+
+int v3_dbg_enable = 0;
+
+
+
+static void init_cpu(void * arg) {
+ uint32_t cpu_id = (uint32_t)(addr_t)arg;
+
+#ifdef CONFIG_SVM
+ if (v3_is_svm_capable()) {
+ PrintDebug("Machine is SVM Capable\n");
+ v3_init_svm_cpu(cpu_id);
+
+ } else
+#endif
+#ifdef CONFIG_VMX
+ if (v3_is_vmx_capable()) {
+ PrintDebug("Machine is VMX Capable\n");
+ v3_init_vmx_cpu(cpu_id);
+
+ } else
+#endif
+ {
+ PrintError("CPU has no virtualizationExtensions\n");
+ }
+}
+
+
+
+void Init_V3(struct v3_os_hooks * hooks, int num_cpus) {
+ int i;
+
+ V3_Print("V3 Print statement to fix a Kitten page fault bug\n");
+
+ // Set global variables.
+ os_hooks = hooks;
+
+ for (i = 0; i < CONFIG_MAX_CPUS; i++) {
+ v3_cpu_types[i] = V3_INVALID_CPU;
+ }
+
+ // Register all the possible device types
+ v3_init_devices();
+
+ // Register all shadow paging handlers
+ V3_init_shdw_paging();
+
+
+#ifdef CONFIG_SYMMOD
+ V3_init_symmod();
+#endif
+
+#ifdef CONFIG_INSTRUMENT_VMM
+ v3_init_instrumentation();
+#endif
-v3_cpu_arch_t v3_cpu_type;
-struct vmm_os_hooks * os_hooks = NULL;
+#ifdef CONFIG_VNET
+ V3_init_vnet();
+#endif
-void * allocate_guest() {
- void * info = V3_Malloc(sizeof(struct guest_info));
- memset(info, 0, sizeof(struct guest_info));
- return info;
+#ifdef CONFIG_MULTITHREAD_OS
+ if ((hooks) && (hooks->call_on_cpu)) {
+
+ for (i = 0; i < num_cpus; i++) {
+
+ V3_Print("Initializing VMM extensions on cpu %d\n", i);
+ hooks->call_on_cpu(i, &init_cpu, (void *)(addr_t)i);
+ }
+ }
+#else
+ init_cpu(0);
+#endif
+
}
+v3_cpu_arch_t v3_get_cpu_type(int cpu_id) {
+ return v3_cpu_types[cpu_id];
+}
+
+
+struct v3_vm_info * v3_create_vm(void * cfg, void * priv_data) {
+ struct v3_vm_info * vm = v3_config_guest(cfg);
+
+ V3_Print("CORE 0 RIP=%p\n", (void *)(addr_t)(vm->cores[0].rip));
-void Init_V3(struct vmm_os_hooks * hooks, struct vmm_ctrl_ops * vmm_ops) {
- os_hooks = hooks;
+ if (vm == NULL) {
+ PrintError("Could not configure guest\n");
+ return NULL;
+ }
- v3_cpu_type = V3_INVALID_CPU;
+ vm->host_priv_data = priv_data;
+
+ return vm;
+}
+
+
+static int start_core(void * p)
+{
+ struct guest_info * core = (struct guest_info *)p;
- if (is_svm_capable()) {
- PrintDebug("Machine is SVM Capable\n");
- vmm_ops->allocate_guest = &allocate_guest;
- vmm_ops->config_guest = &config_guest;
- Init_SVM(vmm_ops);
+ PrintDebug("core %u: in start_core (RIP=%p)\n",
+ core->cpu_id, (void *)(addr_t)core->rip);
- /*
- } else if (is_vmx_capable()) {
- vmm_cpu_type = VMM_VMX_CPU;
- PrintDebug("Machine is VMX Capable\n");
- //Init_VMX();*/
- } else {
- PrintDebug("CPU has no virtualization Extensions\n");
- }
+
+ // JRL: Whoa WTF? cpu_types are tied to the vcoreID????
+ switch (v3_cpu_types[core->cpu_id]) {
+#ifdef CONFIG_SVM
+ case V3_SVM_CPU:
+ case V3_SVM_REV3_CPU:
+ return v3_start_svm_guest(core);
+ break;
+#endif
+#if CONFIG_VMX
+ case V3_VMX_CPU:
+ case V3_VMX_EPT_CPU:
+ return v3_start_vmx_guest(core);
+ break;
+#endif
+ default:
+ PrintError("Attempting to enter a guest on an invalid CPU\n");
+ return -1;
+ }
+ // should not happen
+ return 0;
}
+#ifdef CONFIG_MULTITHREAD_OS
+// For the moment very ugly. Eventually we will shift the cpu_mask to an arbitrary sized type...
+#define MAX_CORES 32
+
+
+static int start_vm_multicore(struct v3_vm_info * vm, unsigned int cpu_mask) {
+ uint32_t i;
+ char tname[16];
+ int vcore_id = 0;
+ uint8_t * core_mask = (uint8_t *)&cpu_mask; // This is to make future expansion easier
+ uint32_t avail_cores = 0;
+
+
+
+ /// CHECK IF WE ARE MULTICORE ENABLED....
+
+ V3_Print("V3 -- Starting VM (%u cores)\n", vm->num_cores);
+ V3_Print("CORE 0 RIP=%p\n", (void *)(addr_t)(vm->cores[0].rip));
+
+ // Check that enough cores are present in the mask to handle vcores
+ for (i = 0; i < MAX_CORES; i++) {
+ int major = i / 8;
+ int minor = i % 8;
+
+ if (core_mask[major] & (0x1 << minor)) {
+ avail_cores++;
+ }
+
+ }
+
+ if (vm->num_cores > avail_cores) {
+ PrintError("Attempted to start a VM with too many cores (MAX=%d)\n", MAX_CORES);
+ return -1;
+ }
+
+
+ for (i = 0; (i < MAX_CORES) && (vcore_id < vm->num_cores); i++) {
+ int major = i / 8;
+ int minor = i % 8;
+ void * core_thread = NULL;
+
+ if ((core_mask[major] & (0x1 << minor)) == 0) {
+ // cpuid not set in cpu_mask
+ continue;
+ }
+
+ PrintDebug("Starting virtual core %u on logical core %u\n",
+ vcore_id, i);
+
+ sprintf(tname, "core%u", vcore_id);
+
+ PrintDebug("run: core=%u, func=0x%p, arg=0x%p, name=%s\n",
+ i, start_core, &(vm->cores[vcore_id]), tname);
+
+ // TODO: actually manage these threads instead of just launching them
+ core_thread = V3_CREATE_THREAD_ON_CPU(i, start_core,
+ &(vm->cores[vcore_id]), tname);
+
+ if (core_thread == NULL) {
+ PrintError("Thread launch failed\n");
+ return -1;
+ }
-// Get CPU Type..
+ vcore_id++;
+ }
+ return 0;
+
+}
+#endif
+
+
+int v3_start_vm(struct v3_vm_info * vm, unsigned int cpu_mask) {
+#ifdef CONFIG_MULTITHREAD_OS
+ return start_vm_multicore(vm, cpu_mask);
+#else
+ return start_core(&(vm->cores[0]));
+#endif
+}
+
+
+int v3_stop_vm(struct v3_vm_info * vm) {
+
+ vm->run_state = VM_STOPPED;
+
+
+ // force exit all cores via a cross call/IPI
+
+ // Wait for all cores to enter CORE_STOPPED state
+
+ // deinitialize guest (free memory, etc...)
+
+ return 0;
+}
+
+
+#ifdef __V3_32BIT__
+
+v3_cpu_mode_t v3_get_host_cpu_mode() {
+ uint32_t cr4_val;
+ struct cr4_32 * cr4;
+
+ __asm__ (
+ "movl %%cr4, %0; "
+ : "=r"(cr4_val)
+ );
+
+
+ cr4 = (struct cr4_32 *)&(cr4_val);
+
+ if (cr4->pae == 1) {
+ return PROTECTED_PAE;
+ } else {
+ return PROTECTED;
+ }
+}
+
+#elif __V3_64BIT__
+
+v3_cpu_mode_t v3_get_host_cpu_mode() {
+ return LONG;
+}
+
+#endif
+
+
+#define V3_Yield(addr) \
+ do { \
+ extern struct v3_os_hooks * os_hooks; \
+ if ((os_hooks) && (os_hooks)->yield_cpu) { \
+ (os_hooks)->yield_cpu(); \
+ } \
+ } while (0) \
+
+
+
+void v3_yield_cond(struct guest_info * info) {
+ uint64_t cur_cycle;
+ cur_cycle = v3_get_host_time(&info->time_state);
+
+ if (cur_cycle > (info->yield_start_cycle + info->vm_info->yield_cycle_period)) {
+
+ /*
+ PrintDebug("Conditional Yield (cur_cyle=%p, start_cycle=%p, period=%p)\n",
+ (void *)cur_cycle, (void *)info->yield_start_cycle, (void *)info->yield_cycle_period);
+ */
+ V3_Yield();
+ info->yield_start_cycle = v3_get_host_time(&info->time_state);
+ }
+}
+
+
+/*
+ * unconditional cpu yield
+ * if the yielding thread is a guest context, the guest quantum is reset on resumption
+ * Non guest context threads should call this function with a NULL argument
+ */
+void v3_yield(struct guest_info * info) {
+ V3_Yield();
+
+ if (info) {
+ info->yield_start_cycle = v3_get_host_time(&info->time_state);
+ }
+}
+
+
+
+
+void v3_print_cond(const char * fmt, ...) {
+ if (v3_dbg_enable == 1) {
+ char buf[2048];
+ va_list ap;
+
+ va_start(ap, fmt);
+ vsnprintf(buf, 2048, fmt, ap);
+ va_end(ap);
+
+ V3_Print("%s", buf);
+ }
+}
+
+
+#ifdef CONFIG_MULTITHREAD_OS
+
+void v3_interrupt_cpu(struct v3_vm_info * vm, int logical_cpu, int vector) {
+ extern struct v3_os_hooks * os_hooks;
+
+ if ((os_hooks) && (os_hooks)->interrupt_cpu) {
+ (os_hooks)->interrupt_cpu(vm, logical_cpu, vector);
+ }
+}
+#endif
+
+
+
+int v3_vm_enter(struct guest_info * info) {
+ switch (v3_cpu_types[info->cpu_id]) {
+#ifdef CONFIG_SVM
+ case V3_SVM_CPU:
+ case V3_SVM_REV3_CPU:
+ return v3_svm_enter(info);
+ break;
+#endif
+#if CONFIG_VMX
+ case V3_VMX_CPU:
+ case V3_VMX_EPT_CPU:
+ return v3_vmx_enter(info);
+ break;
+#endif
+ default:
+ PrintError("Attemping to enter a guest on an invalid CPU\n");
+ return -1;
+ }
+}
