+
/*
* This file is part of the Palacios Virtual Machine Monitor developed
* by the V3VEE Project with funding from the United States National
#include <palacios/vmm_sprintf.h>
-#ifndef CONFIG_DEBUG_SVM
+#ifndef V3_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 addr_t host_vmcbs[CONFIG_MAX_CPUS] = { [0 ... CONFIG_MAX_CPUS - 1] = 0};
+static addr_t host_vmcbs[V3_CONFIG_MAX_CPUS] = { [0 ... V3_CONFIG_MAX_CPUS - 1] = 0};
ctrl_area->instrs.HLT = 1;
-#ifdef CONFIG_TIME_VIRTUALIZE_TSC
+#ifdef V3_CONFIG_TIME_VIRTUALIZE_TSC
ctrl_area->instrs.RDTSC = 1;
ctrl_area->svm_instrs.RDTSCP = 1;
#endif
ctrl_area->instrs.shutdown_evts = 1;
/* KCH: intercept SW Interrupts (INT instr) */
-#ifdef CONFIG_SW_INTERRUPTS
+#ifdef V3_CONFIG_SW_INTERRUPTS
ctrl_area->instrs.INTn = 1;
#endif
&v3_handle_efer_write,
core);
-#ifdef CONFIG_HIJACK_MSR
- /* KCH: for SYSCALL and SYSENTER interception */
+#ifdef V3_CONFIG_HIJACK_SYSCALL_MSR
+ /* KCH: we're not hooking these to TRAP them,
+ instead, we're going to catch the target EIP.
+ Hopefully this EIP is the entry point in the ELF located in the
+ vsyscall page. We can inject checks into the code segment such that
+ we don't have to exit on uninteresting system calls. This should
+ give us much better performance than INT 80, and should even obviate
+ the need to deal with software interrupts at all */
v3_hook_msr(core->vm_info, STAR_MSR,
&v3_handle_star_read,
&v3_handle_star_write,
&v3_handle_cstar_read,
&v3_handle_cstar_write,
core);
+
+ /* KCH: this probably isn't necessary, as
+ SYSENTER is only used in legacy mode. In fact,
+ in long mode it results in an illegal instruction
+ exception */
+ v3_hook_msr(core->vm_info, IA32_SYSENTER_EIP_MSR,
+ &v3_handle_seeip_read,
+ &v3_handle_seeip_write,
+ core);
#endif
if (core->shdw_pg_mode == SHADOW_PAGING) {
if ((info->intr_core_state.irq_pending == 1) && (guest_ctrl->guest_ctrl.V_IRQ == 0)) {
-#ifdef CONFIG_DEBUG_INTERRUPTS
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
PrintDebug("INTAK cycle completed for irq %d\n", info->intr_core_state.irq_vector);
#endif
}
if ((info->intr_core_state.irq_started == 1) && (guest_ctrl->exit_int_info.valid == 0)) {
-#ifdef CONFIG_DEBUG_INTERRUPTS
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
PrintDebug("Interrupt %d taken by guest\n", info->intr_core_state.irq_vector);
#endif
info->intr_core_state.irq_started = 0;
} else if ((info->intr_core_state.irq_started == 1) && (guest_ctrl->exit_int_info.valid == 1)) {
-#ifdef CONFIG_DEBUG_INTERRUPTS
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
PrintDebug("EXIT INT INFO is set (vec=%d)\n", guest_ctrl->exit_int_info.vector);
#endif
}
if (info->excp_state.excp_error_code_valid) {
guest_ctrl->EVENTINJ.error_code = info->excp_state.excp_error_code;
guest_ctrl->EVENTINJ.ev = 1;
-#ifdef CONFIG_DEBUG_INTERRUPTS
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
PrintDebug("Injecting exception %d with error code %x\n", excp, guest_ctrl->EVENTINJ.error_code);
#endif
}
guest_ctrl->EVENTINJ.valid = 1;
-#ifdef CONFIG_DEBUG_INTERRUPTS
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
PrintDebug("<%d> Injecting Exception %d (CR2=%p) (EIP=%p)\n",
(int)info->num_exits,
guest_ctrl->EVENTINJ.vector,
v3_injecting_excp(info, excp);
} else if (info->intr_core_state.irq_started == 1) {
-#ifdef CONFIG_DEBUG_INTERRUPTS
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
PrintDebug("IRQ pending from previous injection\n");
#endif
guest_ctrl->guest_ctrl.V_IRQ = 1;
guest_ctrl->guest_ctrl.V_IGN_TPR = 1;
guest_ctrl->guest_ctrl.V_INTR_PRIO = 0xf;
-#ifdef CONFIG_DEBUG_INTERRUPTS
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
PrintDebug("Injecting Interrupt %d (EIP=%p)\n",
guest_ctrl->guest_ctrl.V_INTR_VECTOR,
(void *)(addr_t)info->rip);
guest_state->rip = info->rip;
guest_state->rsp = info->vm_regs.rsp;
-#ifdef CONFIG_SYMCALL
+#ifdef V3_CONFIG_SYMCALL
if (info->sym_core_state.symcall_state.sym_call_active == 0) {
update_irq_entry_state(info);
}
(void *)(addr_t)info->rip);
*/
-#ifdef CONFIG_SYMCALL
+#ifdef V3_CONFIG_SYMCALL
if (info->sym_core_state.symcall_state.sym_call_active == 1) {
if (guest_ctrl->guest_ctrl.V_IRQ == 1) {
V3_Print("!!! Injecting Interrupt during Sym call !!!\n");
exit_info2 = guest_ctrl->exit_info2;
-#ifdef CONFIG_SYMCALL
+#ifdef V3_CONFIG_SYMCALL
if (info->sym_core_state.symcall_state.sym_call_active == 0) {
update_irq_exit_state(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 (on logical core %u)\n", info->vcpu_id, info->pcpu_id);
- if (info->cpu_id == 0) {
+ if (info->vcpu_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);
+ PrintDebug("SVM core %u (on %u): Waiting for core initialization\n", info->vcpu_id, info->pcpu_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: still waiting for INIT\n", info->vcpu_id);
}
- PrintDebug("SVM core %u initialized\n", info->cpu_id);
+ PrintDebug("SVM core %u(on %u) initialized\n", info->vcpu_id, info->pcpu_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),
+ PrintDebug("SVM core %u(on %u): I am starting at CS=0x%x (base=0x%p, limit=0x%x), RIP=0x%p\n",
+ info->vcpu_id, info->pcpu_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);
+ PrintDebug("SVM core %u: Launching SVM VM (vmcb=%p) (on cpu %u)\n",
+ info->vcpu_id, (void *)info->vmm_data, info->pcpu_id);
//PrintDebugVMCB((vmcb_t*)(info->vmm_data));
v3_start_time(info);
info->vm_info->run_state = VM_ERROR;
- V3_Print("SVM core %u: SVM ERROR!!\n", info->cpu_id);
+ V3_Print("SVM core %u: SVM ERROR!!\n", info->vcpu_id);
v3_print_guest_state(info);
- V3_Print("SVM core %u: SVM Exit Code: %p\n", info->cpu_id, (void *)(addr_t)guest_ctrl->exit_code);
+ V3_Print("SVM core %u: SVM Exit Code: %p\n", info->vcpu_id, (void *)(addr_t)guest_ctrl->exit_code);
- V3_Print("SVM core %u: exit_info1 low = 0x%.8x\n", info->cpu_id, *(uint_t*)&(guest_ctrl->exit_info1));
- V3_Print("SVM core %u: exit_info1 high = 0x%.8x\n", info->cpu_id, *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info1)) + 4));
+ V3_Print("SVM core %u: exit_info1 low = 0x%.8x\n", info->vcpu_id, *(uint_t*)&(guest_ctrl->exit_info1));
+ V3_Print("SVM core %u: exit_info1 high = 0x%.8x\n", info->vcpu_id, *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info1)) + 4));
- V3_Print("SVM core %u: exit_info2 low = 0x%.8x\n", info->cpu_id, *(uint_t*)&(guest_ctrl->exit_info2));
- V3_Print("SVM core %u: exit_info2 high = 0x%.8x\n", info->cpu_id, *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info2)) + 4));
+ V3_Print("SVM core %u: exit_info2 low = 0x%.8x\n", info->vcpu_id, *(uint_t*)&(guest_ctrl->exit_info2));
+ V3_Print("SVM core %u: exit_info2 high = 0x%.8x\n", info->vcpu_id, *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info2)) + 4));
linear_addr = get_addr_linear(info, info->rip, &(info->segments.cs));
v3_gva_to_hva(info, linear_addr, &host_addr);
}
- V3_Print("SVM core %u: Host Address of rip = 0x%p\n", info->cpu_id, (void *)host_addr);
+ V3_Print("SVM core %u: Host Address of rip = 0x%p\n", info->vcpu_id, (void *)host_addr);
- V3_Print("SVM core %u: Instr (15 bytes) at %p:\n", info->cpu_id, (void *)host_addr);
+ V3_Print("SVM core %u: Instr (15 bytes) at %p:\n", info->vcpu_id, (void *)host_addr);
v3_dump_mem((uint8_t *)host_addr, 15);
v3_print_stack(info);
}
+
/*
- 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[];
