*/
#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>
+#include <palacios/vmm_extensions.h>
+
+#ifdef V3_CONFIG_SVM
+#include <palacios/svm.h>
+#endif
+#ifdef V3_CONFIG_VMX
+#include <palacios/vmx.h>
+#endif
+
+#ifdef V3_CONFIG_CHECKPOINT
+#include <palacios/vmm_checkpoint.h>
+#endif
-/* These should be the only global variables in Palacios */
-/* They are architecture specific variables */
-v3_cpu_arch_t v3_cpu_type;
+v3_cpu_arch_t v3_cpu_types[V3_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 V3_CONFIG_SVM
+ if (v3_is_svm_capable()) {
+ PrintDebug("Machine is SVM Capable\n");
+ v3_init_svm_cpu(cpu_id);
+
+ } else
+#endif
+#ifdef V3_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 virtualization Extensions\n");
+ }
+}
+static void deinit_cpu(void * arg) {
+ uint32_t cpu_id = (uint32_t)(addr_t)arg;
-static struct guest_info * allocate_guest() {
- void * info = V3_Malloc(sizeof(struct guest_info));
- memset(info, 0, sizeof(struct guest_info));
- return info;
+
+ switch (v3_cpu_types[cpu_id]) {
+#ifdef V3_CONFIG_SVM
+ case V3_SVM_CPU:
+ case V3_SVM_REV3_CPU:
+ PrintDebug("Deinitializing SVM CPU %d\n", cpu_id);
+ v3_deinit_svm_cpu(cpu_id);
+ break;
+#endif
+#ifdef V3_CONFIG_VMX
+ case V3_VMX_CPU:
+ case V3_VMX_EPT_CPU:
+ case V3_VMX_EPT_UG_CPU:
+ PrintDebug("Deinitializing VMX CPU %d\n", cpu_id);
+ v3_deinit_vmx_cpu(cpu_id);
+ break;
+#endif
+ case V3_INVALID_CPU:
+ default:
+ PrintError("CPU has no virtualization Extensions\n");
+ break;
+ }
}
-void Init_V3(struct v3_os_hooks * hooks, struct v3_ctrl_ops * vmm_ops) {
-
+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;
- v3_cpu_type = V3_INVALID_CPU;
+ for (i = 0; i < V3_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();
+
+ // Register all extensions
+ V3_init_extensions();
-#ifdef INSTRUMENT_VMM
- v3_init_instrumentation();
+
+#ifdef V3_CONFIG_SYMMOD
+ V3_init_symmod();
#endif
- vmm_ops->allocate_guest = &allocate_guest;
+#ifdef V3_CONFIG_CHECKPOINT
+ V3_init_checkpoint();
+#endif
- if (v3_is_svm_capable()) {
- PrintDebug("Machine is SVM Capable\n");
- v3_init_SVM(vmm_ops);
- } else if (v3_is_vmx_capable()) {
- PrintDebug("Machine is VMX Capable\n");
- v3_init_vmx(vmm_ops);
- } else {
- PrintDebug("CPU has no virtualization Extensions\n");
+
+
+
+ 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);
+ }
+ }
+
+
+}
+
+
+void Shutdown_V3() {
+ int i;
+
+ V3_deinit_devices();
+ V3_deinit_shdw_paging();
+
+ V3_deinit_extensions();
+
+#ifdef V3_CONFIG_SYMMOD
+ V3_deinit_symmod();
+#endif
+
+#ifdef V3_CONFIG_CHECKPOINT
+ V3_deinit_checkpoint();
+#endif
+
+
+ if ((os_hooks) && (os_hooks->call_on_cpu)) {
+ for (i = 0; i < V3_CONFIG_MAX_CPUS; i++) {
+ if (v3_cpu_types[i] != V3_INVALID_CPU) {
+ V3_Call_On_CPU(i, deinit_cpu, (void *)(addr_t)i);
+ //deinit_cpu((void *)(addr_t)i);
+ }
+ }
+ }
+
+}
+
+
+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, char * name) {
+ struct v3_vm_info * vm = v3_config_guest(cfg, priv_data);
+
+ if (vm == NULL) {
+ PrintError("Could not configure guest\n");
+ return NULL;
+ }
+
+ V3_Print("CORE 0 RIP=%p\n", (void *)(addr_t)(vm->cores[0].rip));
+
+ if (name == NULL) {
+ name = "[V3_VM]";
+ } else if (strlen(name) >= 128) {
+ PrintError("VM name is too long. Will be truncated to 128 chars.\n");
+ }
+
+ memset(vm->name, 0, 128);
+ strncpy(vm->name, name, 127);
+
+ return vm;
+}
+
+
+
+
+static int start_core(void * p)
+{
+ struct guest_info * core = (struct guest_info *)p;
+
+
+ PrintDebug("virtual core %u (on logical core %u): in start_core (RIP=%p)\n",
+ core->vcpu_id, core->pcpu_id, (void *)(addr_t)core->rip);
+
+ switch (v3_cpu_types[0]) {
+#ifdef V3_CONFIG_SVM
+ case V3_SVM_CPU:
+ case V3_SVM_REV3_CPU:
+ return v3_start_svm_guest(core);
+ break;
+#endif
+#if V3_CONFIG_VMX
+ case V3_VMX_CPU:
+ case V3_VMX_EPT_CPU:
+ case V3_VMX_EPT_UG_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;
+}
+
+
+// For the moment very ugly. Eventually we will shift the cpu_mask to an arbitrary sized type...
+#define MAX_CORES 32
+
+
+int v3_start_vm(struct v3_vm_info * vm, unsigned int cpu_mask) {
+ uint32_t i;
+ uint8_t * core_mask = (uint8_t *)&cpu_mask; // This is to make future expansion easier
+ uint32_t avail_cores = 0;
+ int vcore_id = 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 (vm->num_cores = %d, avail_cores = %d, MAX=%d)\n",
+ vm->num_cores, avail_cores, MAX_CORES);
+ return -1;
+ }
+
+ // Spawn off threads for each core.
+ // We work backwards, so that core 0 is always started last.
+ for (i = 0, vcore_id = vm->num_cores - 1; (i < MAX_CORES) && (vcore_id >= 0); i++) {
+ int major = 0;
+ int minor = 0;
+ struct guest_info * core = &(vm->cores[vcore_id]);
+ char * specified_cpu = v3_cfg_val(core->core_cfg_data, "target_cpu");
+ uint32_t core_idx = 0;
+
+ if (specified_cpu != NULL) {
+ core_idx = atoi(specified_cpu);
+
+ if ((core_idx < 0) || (core_idx >= MAX_CORES)) {
+ PrintError("Target CPU out of bounds (%d) (MAX_CORES=%d)\n", core_idx, MAX_CORES);
+ }
+
+ i--; // We reset the logical core idx. Not strictly necessary I guess...
+ } else {
+ core_idx = i;
+ }
+
+ major = core_idx / 8;
+ minor = core_idx % 8;
+
+ if ((core_mask[major] & (0x1 << minor)) == 0) {
+ PrintError("Logical CPU %d not available for virtual core %d; not started\n",
+ core_idx, vcore_id);
+
+ if (specified_cpu != NULL) {
+ PrintError("CPU was specified explicitly (%d). HARD ERROR\n", core_idx);
+ v3_stop_vm(vm);
+ return -1;
+ }
+
+ continue;
+ }
+
+ PrintDebug("Starting virtual core %u on logical core %u\n",
+ vcore_id, core_idx);
+
+ sprintf(core->exec_name, "%s-%u", vm->name, vcore_id);
+
+ PrintDebug("run: core=%u, func=0x%p, arg=0x%p, name=%s\n",
+ core_idx, start_core, core, core->exec_name);
+
+ core->pcpu_id = core_idx;
+ core->core_thread = V3_CREATE_THREAD_ON_CPU(core_idx, start_core, core, core->exec_name);
+
+ if (core->core_thread == NULL) {
+ PrintError("Thread launch failed\n");
+ v3_stop_vm(vm);
+ return -1;
+ }
+
+ vcore_id--;
+ }
+
+
+ return 0;
+
+}
+
+
+int v3_reset_vm_core(struct guest_info * core, addr_t rip) {
+
+ switch (v3_cpu_types[core->pcpu_id]) {
+#ifdef V3_CONFIG_SVM
+ case V3_SVM_CPU:
+ case V3_SVM_REV3_CPU:
+ PrintDebug("Resetting SVM Guest CPU %d\n", core->vcpu_id);
+ return v3_reset_svm_vm_core(core, rip);
+#endif
+#ifdef V3_CONFIG_VMX
+ case V3_VMX_CPU:
+ case V3_VMX_EPT_CPU:
+ case V3_VMX_EPT_UG_CPU:
+ PrintDebug("Resetting VMX Guest CPU %d\n", core->vcpu_id);
+ return v3_reset_vmx_vm_core(core, rip);
+#endif
+ case V3_INVALID_CPU:
+ default:
+ PrintError("CPU has no virtualization Extensions\n");
+ break;
+ }
+
+ return -1;
+}
+
+
+
+/* move a virtual core to different physical core */
+int v3_move_vm_core(struct v3_vm_info * vm, int vcore_id, int target_cpu) {
+ struct guest_info * core = NULL;
+
+ if ((vcore_id < 0) || (vcore_id >= vm->num_cores)) {
+ PrintError("Attempted to migrate invalid virtual core (%d)\n", vcore_id);
+ return -1;
+ }
+
+ core = &(vm->cores[vcore_id]);
+
+ if (target_cpu == core->pcpu_id) {
+ PrintError("Attempted to migrate to local core (%d)\n", target_cpu);
+ // well that was pointless
+ return 0;
+ }
+
+ if (core->core_thread == NULL) {
+ PrintError("Attempted to migrate a core without a valid thread context\n");
+ return -1;
+ }
+
+ while (v3_raise_barrier(vm, NULL) == -1);
+
+ V3_Print("Performing Migration from %d to %d\n", core->pcpu_id, target_cpu);
+
+ // Double check that we weren't preemptively migrated
+ if (target_cpu != core->pcpu_id) {
+
+ V3_Print("Moving Core\n");
+
+
+#ifdef V3_CONFIG_VMX
+ switch (v3_cpu_types[core->pcpu_id]) {
+ case V3_VMX_CPU:
+ case V3_VMX_EPT_CPU:
+ case V3_VMX_EPT_UG_CPU:
+ PrintDebug("Flushing VMX Guest CPU %d\n", core->vcpu_id);
+ V3_Call_On_CPU(core->pcpu_id, (void (*)(void *))v3_flush_vmx_vm_core, (void *)core);
+ break;
+ default:
+ break;
+ }
+#endif
+
+ if (V3_MOVE_THREAD_TO_CPU(target_cpu, core->core_thread) != 0) {
+ PrintError("Failed to move Vcore %d to CPU %d\n",
+ core->vcpu_id, target_cpu);
+ v3_lower_barrier(vm);
+ return -1;
+ }
+
+ /* There will be a benign race window here:
+ core->pcpu_id will be set to the target core before its fully "migrated"
+ However the core will NEVER run on the old core again, its just in flight to the new core
+ */
+ core->pcpu_id = target_cpu;
+
+ V3_Print("core now at %d\n", core->pcpu_id);
+ }
+
+ v3_lower_barrier(vm);
+
+ return 0;
+}
+
+
+
+int v3_stop_vm(struct v3_vm_info * vm) {
+
+ vm->run_state = VM_STOPPED;
+
+ // force exit all cores via a cross call/IPI
+
+ while (1) {
+ int i = 0;
+ int still_running = 0;
+
+ for (i = 0; i < vm->num_cores; i++) {
+ if (vm->cores[i].core_run_state != CORE_STOPPED) {
+ still_running = 1;
+ }
+ }
+
+ if (still_running == 0) {
+ break;
+ }
+
+ v3_yield(NULL);
+ }
+
+ V3_Print("VM stopped. Returning\n");
+
+ return 0;
+}
+
+
+int v3_pause_vm(struct v3_vm_info * vm) {
+
+ if (vm->run_state != VM_RUNNING) {
+ PrintError("Tried to pause a VM that was not running\n");
+ return -1;
+ }
+
+ while (v3_raise_barrier(vm, NULL) == -1);
+
+ vm->run_state = VM_PAUSED;
+
+ return 0;
+}
+
+
+int v3_continue_vm(struct v3_vm_info * vm) {
+
+ if (vm->run_state != VM_PAUSED) {
+ PrintError("Tried to continue a VM that was not paused\n");
+ return -1;
}
+
+ v3_lower_barrier(vm);
+
+ vm->run_state = VM_RUNNING;
+
+ return 0;
+}
+
+#ifdef V3_CONFIG_CHECKPOINT
+#include <palacios/vmm_checkpoint.h>
+
+int v3_save_vm(struct v3_vm_info * vm, char * store, char * url) {
+ return v3_chkpt_save_vm(vm, store, url);
+}
+
+
+int v3_load_vm(struct v3_vm_info * vm, char * store, char * url) {
+ return v3_chkpt_load_vm(vm, store, url);
}
+#endif
+
+
+int v3_free_vm(struct v3_vm_info * vm) {
+ int i = 0;
+ // deinitialize guest (free memory, etc...)
+ v3_free_vm_devices(vm);
+
+ // free cores
+ for (i = 0; i < vm->num_cores; i++) {
+ v3_free_core(&(vm->cores[i]));
+ }
+
+ // free vm
+ v3_free_vm_internal(vm);
+
+ v3_free_config(vm);
+
+ V3_Free(vm);
+
+ return 0;
+}
#ifdef __V3_32BIT__
#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);
+ }
+}
+
+
+
+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);
+ }
+}
+
+
+
+int v3_vm_enter(struct guest_info * info) {
+ switch (v3_cpu_types[0]) {
+#ifdef V3_CONFIG_SVM
+ case V3_SVM_CPU:
+ case V3_SVM_REV3_CPU:
+ return v3_svm_enter(info);
+ break;
+#endif
+#if V3_CONFIG_VMX
+ case V3_VMX_CPU:
+ case V3_VMX_EPT_CPU:
+ case V3_VMX_EPT_UG_CPU:
+ return v3_vmx_enter(info);
+ break;
+#endif
+ default:
+ PrintError("Attemping to enter a guest on an invalid CPU\n");
+ return -1;
+ }
+}
