#include <palacios/vmm_lowlevel.h>
#include <palacios/vmm_ctrl_regs.h>
#include <palacios/vmm_config.h>
+#include <palacios/vmm_time.h>
#include <palacios/vm_guest_mem.h>
#include <palacios/vmm_direct_paging.h>
#include <palacios/vmx_io.h>
static addr_t host_vmcs_ptrs[CONFIG_MAX_CPUS] = { [0 ... CONFIG_MAX_CPUS - 1] = 0};
-
-
+static addr_t active_vmcs_ptrs[CONFIG_MAX_CPUS] = { [0 ... CONFIG_MAX_CPUS - 1] = 0};
extern int v3_vmx_launch(struct v3_gprs * vm_regs, struct guest_info * info, struct v3_ctrl_regs * ctrl_regs);
extern int v3_vmx_resume(struct v3_gprs * vm_regs, struct guest_info * info, struct v3_ctrl_regs * ctrl_regs);
static int init_vmcs_bios(struct guest_info * info, struct vmx_data * vmx_state) {
int vmx_ret = 0;
+ struct vmx_data * vmx_info = (struct vmx_data *)(info->vmm_data);
+
+ // disable global interrupts for vm state initialization
+ v3_disable_ints();
PrintDebug("Loading VMCS\n");
vmx_ret = vmcs_load(vmx_state->vmcs_ptr_phys);
+ active_vmcs_ptrs[V3_Get_CPU()] = vmx_info->vmcs_ptr_phys;
+ vmx_state->state = VMX_UNLAUNCHED;
if (vmx_ret != VMX_SUCCESS) {
PrintError("VMPTRLD failed\n");
info->dbg_regs.dr7 = 0x400;
+#ifdef __V3_64BIT__
vmx_ret |= check_vmcs_write(VMCS_LINK_PTR, (addr_t)0xffffffffffffffffULL);
-
+#else
+ vmx_ret |= check_vmcs_write(VMCS_LINK_PTR, (addr_t)0xffffffffUL);
+ vmx_ret |= check_vmcs_write(VMCS_LINK_PTR_HIGH, (addr_t)0xffffffffUL);
+#endif
if (v3_update_vmcs_ctrl_fields(info)) {
PrintError("Could not write control fields!\n");
}
- vmx_state->state = VMXASSIST_DISABLED;
+ vmx_state->assist_state = VMXASSIST_DISABLED;
+
+ // reenable global interrupts for vm state initialization now
+ // that the vm state is initialized. If another VM kicks us off,
+ // it'll update our vmx state so that we know to reload ourself
+ v3_disable_ints();
return 0;
}
PrintDebug("VMCS pointer: %p\n", (void *)(vmx_state->vmcs_ptr_phys));
info->vmm_data = vmx_state;
+ vmx_state->state = VMX_UNLAUNCHED;
PrintDebug("Initializing VMCS (addr=%p)\n", info->vmm_data);
return 0;
}
+
+int v3_deinit_vmx_vmcs(struct guest_info * core) {
+ struct vmx_data * vmx_state = core->vmm_data;
+
+ V3_FreePages((void *)(vmx_state->vmcs_ptr_phys), 1);
+
+ V3_Free(vmx_state);
+
+ return 0;
+}
+
+
static int update_irq_exit_state(struct guest_info * info) {
struct vmx_exit_idt_vec_info idt_vec_info;
int ret = 0;
uint32_t tsc_offset_low, tsc_offset_high;
struct vmx_exit_info exit_info;
+ struct vmx_data * vmx_info = (struct vmx_data *)(info->vmm_data);
// Conditionally yield the CPU if the timeslice has expired
v3_yield_cond(info);
- // v3_print_guest_state(info);
+ // Perform any additional yielding needed for time adjustment
+ v3_adjust_time(info);
+
+ // Update timer devices prior to entering VM.
+ v3_update_timers(info);
// disable global interrupts for vm state transition
v3_disable_ints();
vmcs_write(VMCS_GUEST_CR3, guest_cr3);
}
- v3_update_timers(info);
-
- /* If this guest is frequency-lagged behind host time, wait
- * for the appropriate host time before resuming the guest. */
- v3_adjust_time(info);
+ // Perform last-minute time bookkeeping prior to entering the VM
+ v3_time_enter_vm(info);
tsc_offset_high = (uint32_t)((v3_tsc_host_offset(&info->time_state) >> 32) & 0xffffffff);
tsc_offset_low = (uint32_t)(v3_tsc_host_offset(&info->time_state) & 0xffffffff);
check_vmcs_write(VMCS_TSC_OFFSET_HIGH, tsc_offset_high);
check_vmcs_write(VMCS_TSC_OFFSET, tsc_offset_low);
- if (info->vm_info->run_state == VM_STOPPED) {
+ if (active_vmcs_ptrs[V3_Get_CPU()] != vmx_info->vmcs_ptr_phys) {
+ vmcs_load(vmx_info->vmcs_ptr_phys);
+ active_vmcs_ptrs[V3_Get_CPU()] = vmx_info->vmcs_ptr_phys;
+ }
+
+ if (vmx_info->state == VMX_UNLAUNCHED) {
+ vmx_info->state = VMX_LAUNCHED;
info->vm_info->run_state = VM_RUNNING;
ret = v3_vmx_launch(&(info->vm_regs), info, &(info->ctrl_regs));
} else {
+ V3_ASSERT(vmx_info->state != VMX_UNLAUNCHED);
ret = v3_vmx_resume(&(info->vm_regs), info, &(info->ctrl_regs));
}
-
+
// PrintDebug("VMX Exit: ret=%d\n", ret);
if (ret != VMX_SUCCESS) {
return -1;
}
+ // Immediate exit from VM time bookkeeping
+ v3_time_exit_vm(info);
+
info->num_exits++;
/* Update guest state */
update_irq_exit_state(info);
#endif
+ // Handle any exits needed still in the atomic section
+ if (v3_handle_atomic_vmx_exit(info, &exit_info) == -1) {
+ PrintError("Error in atomic VMX exit handler\n");
+ return -1;
+ }
+
// reenable global interrupts after vm exit
v3_enable_ints();
}
-int v3_start_vmx_guest(struct guest_info* info) {
+int v3_start_vmx_guest(struct guest_info * info) {
+
+ PrintDebug("Starting VMX core %u\n", info->cpu_id);
- PrintDebug("Starting VMX core %u\n",info->cpu_id);
- if (info->cpu_mode==INIT) {
- PrintDebug("VMX 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("VMX core %u: Waiting for core initialization\n", info->cpu_id);
+
+ while (info->core_run_state == CORE_STOPPED) {
v3_yield(info);
//PrintDebug("VMX core %u: still waiting for INIT\n",info->cpu_id);
}
- PrintDebug("VMX core %u: I am out of INIT\n",info->cpu_id);
- if (info->cpu_mode==SIPI) {
- PrintDebug("VMX 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("VMX core %u: still waiting for SIPI\n",info->cpu_id);
- }
- }
- PrintDebug("VMX core %u: I have my SIPI\n", info->cpu_id);
+
+ PrintDebug("VMX core %u initialized\n", info->cpu_id);
}
- if (info->cpu_mode!=REAL) {
- PrintError("VMX core %u: I am not in REAL mode at launch! Huh?!\n", info->cpu_id);
- return -1;
- }
PrintDebug("VMX 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("VMX core %u: Launching VMX VM\n", info->cpu_id);
v3_start_time(info);
while (1) {
+
+ if (info->vm_info->run_state == VM_STOPPED) {
+ info->core_run_state = CORE_STOPPED;
+ break;
+ }
+
if (v3_vmx_enter(info) == -1) {
v3_print_vmcs();
print_exit_log(info);
return -1;
}
+
+
+ if (info->vm_info->run_state == VM_STOPPED) {
+ info->core_run_state = CORE_STOPPED;
+ break;
+ }
/*
if ((info->num_exits % 5000) == 0) {
V3_Print("VMX Exit number %d\n", (uint32_t)info->num_exits);
struct v3_msr tmp_msr;
uint64_t ret = 0;
- v3_get_msr(VMX_CR4_FIXED0_MSR,&(tmp_msr.hi),&(tmp_msr.lo));
+ v3_get_msr(VMX_CR4_FIXED0_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+
#ifdef __V3_64BIT__
__asm__ __volatile__ (
"movq %%cr4, %%rbx;"
}
+
+void v3_deinit_vmx_cpu(int cpu_id) {
+ extern v3_cpu_arch_t v3_cpu_types[];
+ v3_cpu_types[cpu_id] = V3_INVALID_CPU;
+ V3_FreePages((void *)host_vmcs_ptrs[cpu_id], 1);
+}
