#include <palacios/vmm_sprintf.h>
+#ifndef CONFIG_DEBUG_SVM
+#undef PrintDebug
+#define PrintDebug(fmt, args...)
+#endif
+
+
uint32_t v3_last_exit;
// This is a global pointer to the host's VMCB
static vmcb_t * Allocate_VMCB() {
- vmcb_t * vmcb_page = (vmcb_t *)V3_VAddr(V3_AllocPages(1));
+ vmcb_t * vmcb_page = NULL;
+ addr_t vmcb_pa = (addr_t)V3_AllocPages(1);
+
+ if ((void *)vmcb_pa == NULL) {
+ PrintError("Error allocating VMCB\n");
+ return NULL;
+ }
+
+ vmcb_page = (vmcb_t *)V3_VAddr((void *)vmcb_pa);
memset(vmcb_page, 0, 4096);
//
-
-
ctrl_area->svm_instrs.VMRUN = 1;
ctrl_area->svm_instrs.VMMCALL = 1;
ctrl_area->svm_instrs.VMLOAD = 1;
ctrl_area->svm_instrs.STGI = 1;
ctrl_area->svm_instrs.CLGI = 1;
ctrl_area->svm_instrs.SKINIT = 1;
- ctrl_area->svm_instrs.RDTSCP = 1;
ctrl_area->svm_instrs.ICEBP = 1;
ctrl_area->svm_instrs.WBINVD = 1;
ctrl_area->svm_instrs.MONITOR = 1;
ctrl_area->instrs.CPUID = 1;
ctrl_area->instrs.HLT = 1;
+
+#ifdef CONFIG_TIME_VIRTUALIZE_TSC
+ ctrl_area->instrs.RDTSC = 1;
+ ctrl_area->svm_instrs.RDTSCP = 1;
+#endif
+
// guest_state->cr0 = 0x00000001; // PE
/*
ctrl_area->instrs.NMI = 1;
- ctrl_area->instrs.SMI = 1;
+ ctrl_area->instrs.SMI = 0; // allow SMIs to run in guest
ctrl_area->instrs.INIT = 1;
ctrl_area->instrs.PAUSE = 1;
ctrl_area->instrs.shutdown_evts = 1;
guest_state->g_pat = 0x7040600070406ULL;
}
+
+ /* tell the guest that we don't support SVM */
+ v3_hook_msr(core->vm_info, SVM_VM_CR_MSR,
+ &v3_handle_vm_cr_read,
+ &v3_handle_vm_cr_write,
+ core);
}
-int v3_init_svm_vmcb(struct guest_info * info, v3_vm_class_t vm_class) {
+int v3_init_svm_vmcb(struct guest_info * core, v3_vm_class_t vm_class) {
PrintDebug("Allocating VMCB\n");
- info->vmm_data = (void*)Allocate_VMCB();
+ core->vmm_data = (void *)Allocate_VMCB();
+ if (core->vmm_data == NULL) {
+ PrintError("Could not allocate VMCB, Exiting...\n");
+ return -1;
+ }
+
if (vm_class == V3_PC_VM) {
- PrintDebug("Initializing VMCB (addr=%p)\n", (void *)info->vmm_data);
- Init_VMCB_BIOS((vmcb_t*)(info->vmm_data), info);
+ PrintDebug("Initializing VMCB (addr=%p)\n", (void *)core->vmm_data);
+ Init_VMCB_BIOS((vmcb_t*)(core->vmm_data), core);
} else {
PrintError("Invalid VM class\n");
return -1;
}
+int v3_deinit_svm_vmcb(struct guest_info * core) {
+ V3_FreePages(V3_PAddr(core->vmm_data), 1);
+ return 0;
+}
+
static int update_irq_exit_state(struct guest_info * info) {
vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
int v3_svm_enter(struct guest_info * info) {
vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
- ullong_t tmp_tsc;
addr_t exit_code = 0, exit_info1 = 0, exit_info2 = 0;
// Conditionally yield the CPU if the timeslice has expired
v3_yield_cond(info);
+ v3_adjust_time(info);
+
// disable global interrupts for vm state transition
v3_clgi();
}
#endif
-
- rdtscll(tmp_tsc);
- v3_update_time(info, (tmp_tsc - info->time_state.cached_host_tsc));
- rdtscll(info->time_state.cached_host_tsc);
- // guest_ctrl->TSC_OFFSET = info->time_state.guest_tsc - info->time_state.cached_host_tsc;
+ v3_update_timers(info);
+#ifdef CONFIG_TIME_HIDE_VM_COST
+ v3_restart_time(info);
+#endif
+ guest_ctrl->TSC_OFFSET = v3_tsc_host_offset(&info->time_state);
//V3_Print("Calling v3_svm_launch\n");
-
+
v3_svm_launch((vmcb_t *)V3_PAddr(info->vmm_data), &(info->vm_regs), (vmcb_t *)host_vmcbs[info->cpu_id]);
-
- //V3_Print("SVM Returned: Exit Code: %x, guest_rip=%lx\n", (uint32_t)(guest_ctrl->exit_code), (unsigned long)guest_state->rip);
+ //V3_Print("SVM Returned: Exit Code: %x, guest_rip=%lx\n", (uint32_t)(guest_ctrl->exit_code), (unsigned long)guest_state->rip);
v3_last_exit = (uint32_t)(guest_ctrl->exit_code);
- //rdtscll(tmp_tsc);
- // v3_update_time(info, tmp_tsc - info->time_state.cached_host_tsc);
+#ifdef CONFIG_TIME_HIDE_VM_COST
+ v3_pause_time(info);
+#ifdef CONFIG_TIME_HIDE_EXIT_COST
+ v3_offset_time(info, -CONFIG_TIME_EXIT_COST_ADJUST);
+#endif
+#endif
//PrintDebug("SVM Returned\n");
info->num_exits++;
-
-
-
// Save Guest state from VMCB
info->rip = guest_state->rip;
info->vm_regs.rsp = guest_state->rsp;
v3_yield_cond(info);
+
if (v3_handle_svm_exit(info, exit_code, exit_info1, exit_info2) != 0) {
PrintError("Error in SVM exit handler\n");
return -1;
}
-int v3_start_svm_guest(struct guest_info *info) {
+int v3_start_svm_guest(struct guest_info * info) {
// vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
// vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
+ PrintDebug("Starting SVM core %u\n", info->cpu_id);
- PrintDebug("Starting SVM core %u\n",info->cpu_id);
- if (info->cpu_mode==INIT) {
- PrintDebug("SVM core %u: I am an AP in INIT mode, waiting for that to change\n",info->cpu_id);
- while (info->cpu_mode==INIT) {
+ if (info->cpu_id == 0) {
+ info->core_run_state = CORE_RUNNING;
+ info->vm_info->run_state = VM_RUNNING;
+ } else {
+ PrintDebug("SVM core %u: Waiting for core initialization\n", info->cpu_id);
+
+ while (info->core_run_state == CORE_STOPPED) {
v3_yield(info);
//PrintDebug("SVM core %u: still waiting for INIT\n",info->cpu_id);
}
- PrintDebug("SVM core %u: I am out of INIT\n",info->cpu_id);
- if (info->cpu_mode==SIPI) {
- PrintDebug("SVM core %u: I am waiting on a SIPI to set my starting address\n",info->cpu_id);
- while (info->cpu_mode==SIPI) {
- v3_yield(info);
- //PrintDebug("SVM core %u: still waiting for SIPI\n",info->cpu_id);
- }
- }
- PrintDebug("SVM core %u: I have my SIPI\n", info->cpu_id);
- }
- if (info->cpu_mode!=REAL) {
- PrintError("SVM core %u: I am not in REAL mode at launch! Huh?!\n", info->cpu_id);
- return -1;
- }
+ PrintDebug("SVM core %u initialized\n", info->cpu_id);
+ }
PrintDebug("SVM core %u: I am starting at CS=0x%x (base=0x%p, limit=0x%x), RIP=0x%p\n",
- info->cpu_id, info->segments.cs.selector, (void*)(info->segments.cs.base),
- info->segments.cs.limit,(void*)(info->rip));
+ info->cpu_id, info->segments.cs.selector, (void *)(info->segments.cs.base),
+ info->segments.cs.limit, (void *)(info->rip));
PrintDebug("SVM core %u: Launching SVM VM (vmcb=%p)\n", info->cpu_id, (void *)info->vmm_data);
//PrintDebugVMCB((vmcb_t*)(info->vmm_data));
- info->vm_info->run_state = VM_RUNNING;
- rdtscll(info->yield_start_cycle);
-
+ v3_start_time(info);
while (1) {
+
+ if (info->vm_info->run_state == VM_STOPPED) {
+ info->core_run_state = CORE_STOPPED;
+ break;
+ }
+
if (v3_svm_enter(info) == -1) {
vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
addr_t host_addr;
break;
}
+
+
+ if (info->vm_info->run_state == VM_STOPPED) {
+ info->core_run_state = CORE_STOPPED;
+ break;
+ }
+
/*
if ((info->num_exits % 5000) == 0) {
+void v3_deinit_svm_cpu(int cpu_id) {
+ reg_ex_t msr;
+ extern v3_cpu_arch_t v3_cpu_types[];
+ // reset SVM_VM_HSAVE_PA_MSR
+ // Does setting it to NULL disable??
+ msr.r_reg = 0;
+ v3_set_msr(SVM_VM_HSAVE_PA_MSR, msr.e_reg.high, msr.e_reg.low);
+
+ // Disable SVM?
+ v3_get_msr(EFER_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
+ msr.e_reg.low &= ~EFER_MSR_svm_enable;
+ v3_set_msr(EFER_MSR, 0, msr.e_reg.low);
+
+ v3_cpu_types[cpu_id] = V3_INVALID_CPU;
+
+ V3_FreePages((void *)host_vmcbs[cpu_id], 4);
+
+ V3_Print("Host CPU %d host area freed, and SVM disabled\n", cpu_id);
+ return;
+}
