+
/*
* This file is part of the Palacios Virtual Machine Monitor developed
* by the V3VEE Project with funding from the United States National
// disable global interrupts for vm state transition
v3_clgi();
- // Update timer devices prior to entering VM.
+ // Update timer devices right before entering the VM. Doing it
+ // here makes sure the guest sees any timers that fired while
+ // it was in the VMM
v3_update_timers(info);
// Synchronize the guest state to the VMCB
- if ((info->num_exits % 5000) == 0) {
+ /*
+ if ((info->num_exits % 50000) == 0) {
V3_Print("SVM Exit number %d\n", (uint32_t)info->num_exits);
v3_print_guest_state(info);
}
-
+ */
}
+ int v3_reset_svm_vm_core(struct guest_info * core, addr_t rip) {
+ // init vmcb_bios
+
+ // Write the RIP, CS, and descriptor
+ // assume the rest is already good to go
+ //
+ // vector VV -> rip at 0
+ // CS = VV00
+ // This means we start executing at linear address VV000
+ //
+ // So the selector needs to be VV00
+ // and the base needs to be VV000
+ //
+ core->rip = 0;
+ core->segments.cs.selector = rip << 8;
+ core->segments.cs.limit = 0xffff;
+ core->segments.cs.base = rip << 12;
+
+ return 0;
+ }
+
+
+
+
+
/* Checks machine SVM capability */
/* Implemented from: AMD Arch Manual 3, sect 15.4 */
}
+
void v3_init_svm_cpu(int cpu_id) {
reg_ex_t msr;
extern v3_cpu_arch_t v3_cpu_types[];
extern v3_cpu_arch_t v3_cpu_types[];
- static addr_t active_vmcs_ptrs[V3_CONFIG_MAX_CPUS] = { [0 ... V3_CONFIG_MAX_CPUS - 1] = 0};
static addr_t host_vmcs_ptrs[V3_CONFIG_MAX_CPUS] = { [0 ... V3_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);
PrintDebug("Loading VMCS\n");
vmx_ret = vmcs_load(vmx_state->vmcs_ptr_phys);
- active_vmcs_ptrs[V3_Get_CPU()] = vmx_state->vmcs_ptr_phys;
vmx_state->state = VMX_UNLAUNCHED;
if (vmx_ret != VMX_SUCCESS) {
return -1;
}
+ PrintDebug("Serializing VMCS: %p\n", (void *)vmx_state->vmcs_ptr_phys);
+ vmx_ret = vmcs_clear(vmx_state->vmcs_ptr_phys);
+
return 0;
}
// Perform any additional yielding needed for time adjustment
v3_adjust_time(info);
// disable global interrupts for vm state transition
v3_disable_ints();
+ // Update timer devices prior to entering VM. Doing it here
+ // makes sure the guest sees any timers that fired while it
+ // was in the VMM
+ v3_update_timers(info);
- if (active_vmcs_ptrs[V3_Get_CPU()] != vmx_info->vmcs_ptr_phys) {
+ if (vmcs_store() != vmx_info->vmcs_ptr_phys) {
vmcs_load(vmx_info->vmcs_ptr_phys);
- active_vmcs_ptrs[V3_Get_CPU()] = vmx_info->vmcs_ptr_phys;
}
-
v3_vmx_restore_vmcs(info);
}
+ int v3_reset_vmx_vm_core(struct guest_info * core, addr_t rip) {
+ // init vmcs bios
+
+ if ((core->shdw_pg_mode == NESTED_PAGING) &&
+ (v3_cpu_types[core->pcpu_id] == V3_VMX_EPT_UG_CPU)) {
+ // easy
+ core->rip = 0;
+ core->segments.cs.selector = rip << 8;
+ core->segments.cs.limit = 0xffff;
+ core->segments.cs.base = rip << 12;
+ } else {
+ core->vm_regs.rdx = core->vcpu_id;
+ core->vm_regs.rbx = rip;
+ }
+ return 0;
+ }