* redistribute, and modify it as specified in the file "V3VEE_LICENSE".
*/
-static int PanicUnhandledVMExit(struct VM *vm)
-{
- PrintInfo("Panicking due to VMExit with reason %u\n", vm->vmcs.exitInfoFields.reason);
- PrintTrace("Panicking due to VMExit with reason %u\n", vm->vmcs.exitInfoFields.reason);
- PrintTrace_VMCS_ALL();
- PrintTrace_VMX_Regs(&(vm->registers));
- VMXPanic();
- return 0;
-}
-
-
-
+#include <palacios/vmx_handler.h>
+#include <palacios/vmm_types.h>
+#include <palacios/vmm.h>
+#include <palacios/vmcs.h>
+#include <palacios/vmx_lowlevel.h>
+#include <palacios/vmx_io.h>
+#include <palacios/vmm_cpuid.h>
+#include <palacios/vmm_debug.h>
+
+#include <palacios/vmx.h>
+#include <palacios/vmm_ctrl_regs.h>
+#include <palacios/vmm_lowlevel.h>
+#include <palacios/vmx_ctrl_regs.h>
+#include <palacios/vmx_assist.h>
+#include <palacios/vmm_halt.h>
+#include <palacios/vmm_mwait.h>
+#include <palacios/vmx_ept.h>
+
+
+#ifndef V3_CONFIG_DEBUG_VMX
+#undef PrintDebug
+#define PrintDebug(fmt, args...)
+#endif
+
+#ifdef V3_CONFIG_TELEMETRY
+#include <palacios/vmm_telemetry.h>
+#endif
+
+/* At this point the GPRs are already copied into the guest_info state */
+int v3_handle_vmx_exit(struct guest_info * info, struct vmx_exit_info * exit_info) {
+ struct vmx_basic_exit_info * basic_info = (struct vmx_basic_exit_info *)&(exit_info->exit_reason);
+
+ /*
+ PrintError(info->vm_info, info, "Handling VMX_EXIT: %s (%u), %lu (0x%lx)\n",
+ v3_vmx_exit_code_to_str(exit_info->exit_reason),
+ exit_info->exit_reason,
+ exit_info->exit_qual, exit_info->exit_qual);
+
+ v3_print_vmcs();
+ */
+
+
+ if (basic_info->entry_error == 1) {
+ switch (basic_info->reason) {
+ case VMX_EXIT_INVALID_GUEST_STATE:
+ PrintError(info->vm_info, info, "VM Entry failed due to invalid guest state\n");
+ PrintError(info->vm_info, info, "Printing VMCS: (NOTE: This VMCS may not belong to the correct guest)\n");
+ v3_print_vmcs();
+ break;
+ case VMX_EXIT_INVALID_MSR_LOAD:
+ PrintError(info->vm_info, info, "VM Entry failed due to error loading MSRs\n");
+ break;
+ default:
+ PrintError(info->vm_info, info, "Entry failed for unknown reason (%d)\n", basic_info->reason);
+ break;
+ }
+
+ return -1;
+ }
-static int HandleVMPrintsAndPanics(struct VM *vm, uint_t port, uint_t data)
-{
- if (port==VMXASSIST_INFO_PORT &&
- (vm->state == VM_VMXASSIST_STARTUP ||
- vm->state == VM_VMXASSIST_V8086_BIOS ||
- vm->state == VM_VMXASSIST_V8086)) {
- // Communication channel from VMXAssist
- PrintTrace("VMXASSIST Output Port\n");
- PrintDebug("%c",data&0xff);
- return 1;
- }
-
- if ((port==ROMBIOS_PANIC_PORT ||
- port==ROMBIOS_PANIC_PORT2 ||
- port==ROMBIOS_DEBUG_PORT ||
- port==ROMBIOS_INFO_PORT) &&
- (vm->state==VM_VMXASSIST_V8086_BIOS)) {
- // rombios is communicating
- PrintTrace("ROMBIOS Output Port\n");
- // PrintDebug("%c",data&0xff);
- return 1;
- }
-
- if (port==BOOT_STATE_CARD_PORT && vm->state==VM_VMXASSIST_V8086_BIOS) {
- // rombios is sending something to the display card
- PrintTrace("Hex Display: 0x%x\n",data&0xff);
- return 1;
- }
- return 0;
-}
-static int HandleInOutExit(struct VM *vm)
-{
- uint_t address;
-
- struct VMCSExitInfoFields *exitinfo = &(vm->vmcs.exitInfoFields);
- struct VMExitIOQual * qual = (struct VMExitIOQual *)&(vm->vmcs.exitInfoFields.qualification);
- struct VMXRegs *regs = &(vm->registers);
-
- address=GetLinearIP(vm);
-
- PrintTrace("Handling Input/Output Instruction Exit\n");
-
- PrintTrace_VMX_Regs(regs);
-
- PrintTrace("Qualifications=0x%x\n", exitinfo->qualification);
- PrintTrace("Reason=0x%x\n", exitinfo->reason);
- PrintTrace("IO Port: 0x%x (%d)\n", qual->port, qual->port);
- PrintTrace("Instruction Info=%x\n", exitinfo->instrInfo);
- PrintTrace("%x : %s %s %s instruction of length %d for %d bytes from/to port 0x%x\n",
- address,
- qual->dir == 0 ? "output" : "input",
- qual->string ==0 ? "nonstring" : "STRING",
- qual->REP == 0 ? "with no rep" : "WITH REP",
- exitinfo->instrLength,
- qual->accessSize==0 ? 1 : qual->accessSize==1 ? 2 : 4,
- qual->port);
-
- if ((qual->port == PIC_MASTER_CMD_ISR_PORT) ||
- (qual->port == PIC_MASTER_IMR_PORT) ||
- (qual->port == PIC_SLAVE_CMD_ISR_PORT) ||
- (qual->port == PIC_SLAVE_IMR_PORT)) {
- PrintTrace( "PIC Access\n");
- }
-
-
- if ((qual->dir == 1) && (qual->REP == 0) && (qual->string == 0)) {
- char byte = In_Byte(qual->port);
-
- vm->vmcs.guestStateArea.rip += exitinfo->instrLength;
- regs->eax = (regs->eax & 0xffffff00) | byte;
- PrintTrace("Returning 0x%x in eax\n", (regs->eax));
- }
-
- if (qual->dir==0 && qual->REP==0 && qual->string==0) {
- // See if we need to handle the outb as a signal or
- // print from the VM
- if (HandleVMPrintsAndPanics(vm,qual->port,regs->eax)) {
- } else {
- // If not, just go ahead and do the outb
- Out_Byte(qual->port,regs->eax);
- PrintTrace("Wrote 0x%x to port\n",(regs->eax));
+#ifdef V3_CONFIG_TELEMETRY
+ if (info->vm_info->enable_telemetry) {
+ v3_telemetry_start_exit(info);
+ }
+#endif
+
+ switch (basic_info->reason) {
+ case VMX_EXIT_INFO_EXCEPTION_OR_NMI: {
+ pf_error_t error_code = *(pf_error_t *)&(exit_info->int_err);
+
+
+ // JRL: Change "0x0e" to a macro value
+ if ((uint8_t)exit_info->int_info == 14) {
+#ifdef V3_CONFIG_DEBUG_SHADOW_PAGING
+ PrintDebug(info->vm_info, info, "Page Fault at %p error_code=%x\n", (void *)exit_info->exit_qual, *(uint32_t *)&error_code);
+#endif
+
+ if (info->shdw_pg_mode == SHADOW_PAGING) {
+ if (v3_handle_shadow_pagefault(info, (addr_t)exit_info->exit_qual, error_code) == -1) {
+ PrintError(info->vm_info, info, "Error handling shadow page fault\n");
+ return -1;
+ }
+
+ } else {
+ PrintError(info->vm_info, info, "Page fault in unimplemented paging mode\n");
+ return -1;
+ }
+ } else if ((uint8_t)exit_info->int_info == 2) {
+ // NMI. Don't do anything
+ } else {
+ PrintError(info->vm_info, info, "Unknown exception: 0x%x\n", (uint8_t)exit_info->int_info);
+ v3_print_GPRs(info);
+ return -1;
+ }
+ break;
+ }
+
+ case VMX_EXIT_EPT_VIOLATION: {
+ struct ept_exit_qual * ept_qual = (struct ept_exit_qual *)&(exit_info->exit_qual);
+
+ if (v3_handle_nested_pagefault(info, exit_info->ept_fault_addr, ept_qual,NULL,NULL) == -1) {
+ PrintError(info->vm_info, info, "Error handling EPT fault\n");
+ return -1;
+ }
+
+ break;
+ }
+ case VMX_EXIT_INVLPG:
+ if (info->shdw_pg_mode == SHADOW_PAGING) {
+ if (v3_handle_shadow_invlpg(info) == -1) {
+ PrintError(info->vm_info, info, "Error handling INVLPG\n");
+ return -1;
+ }
+ }
+
+ break;
+
+ case VMX_EXIT_RDTSC:
+#ifdef V3_CONFIG_DEBUG_TIME
+ PrintDebug(info->vm_info, info, "RDTSC\n");
+#endif
+ if (v3_handle_rdtsc(info) == -1) {
+ PrintError(info->vm_info, info, "Error Handling RDTSC instruction\n");
+ return -1;
+ }
+
+ break;
+
+ case VMX_EXIT_CPUID:
+ if (v3_handle_cpuid(info) == -1) {
+ PrintError(info->vm_info, info, "Error Handling CPUID instruction\n");
+ return -1;
+ }
+
+ break;
+ case VMX_EXIT_RDMSR:
+ if (v3_handle_msr_read(info) == -1) {
+ PrintError(info->vm_info, info, "Error handling MSR Read\n");
+ return -1;
+ }
+
+ break;
+ case VMX_EXIT_WRMSR:
+ if (v3_handle_msr_write(info) == -1) {
+ PrintError(info->vm_info, info, "Error handling MSR Write\n");
+ return -1;
+ }
+
+ break;
+ case VMX_EXIT_VMCALL:
+ /*
+ * Hypercall
+ */
+
+ // VMCALL is a 3 byte op
+ // We do this early because some hypercalls can change the rip...
+ info->rip += 3;
+
+ if (v3_handle_hypercall(info) == -1) {
+ return -1;
+ }
+ break;
+ case VMX_EXIT_IO_INSTR: {
+ struct vmx_exit_io_qual * io_qual = (struct vmx_exit_io_qual *)&(exit_info->exit_qual);
+
+ if (io_qual->dir == 0) {
+ if (io_qual->string) {
+ if (v3_handle_vmx_io_outs(info, exit_info) == -1) {
+ PrintError(info->vm_info, info, "Error in outs IO handler\n");
+ return -1;
+ }
+ } else {
+ if (v3_handle_vmx_io_out(info, exit_info) == -1) {
+ PrintError(info->vm_info, info, "Error in out IO handler\n");
+ return -1;
+ }
+ }
+ } else {
+ if (io_qual->string) {
+ if(v3_handle_vmx_io_ins(info, exit_info) == -1) {
+ PrintError(info->vm_info, info, "Error in ins IO handler\n");
+ return -1;
+ }
+ } else {
+ if (v3_handle_vmx_io_in(info, exit_info) == -1) {
+ PrintError(info->vm_info, info, "Error in in IO handler\n");
+ return -1;
+ }
+ }
+ }
+ break;
+ }
+ case VMX_EXIT_CR_REG_ACCESSES: {
+ struct vmx_exit_cr_qual * cr_qual = (struct vmx_exit_cr_qual *)&(exit_info->exit_qual);
+
+ // PrintDebug(info->vm_info, info, "Control register: %d\n", cr_qual->access_type);
+ switch(cr_qual->cr_id) {
+ case 0:
+ //PrintDebug(info->vm_info, info, "Handling CR0 Access\n");
+ if (v3_vmx_handle_cr0_access(info, cr_qual, exit_info) == -1) {
+ PrintError(info->vm_info, info, "Error in CR0 access handler\n");
+ return -1;
+ }
+ break;
+ case 3:
+ //PrintDebug(info->vm_info, info, "Handling CR3 Access\n");
+ if (v3_vmx_handle_cr3_access(info, cr_qual) == -1) {
+ PrintError(info->vm_info, info, "Error in CR3 access handler\n");
+ return -1;
+ }
+ break;
+ case 4:
+ //PrintDebug(info->vm_info, info, "Handling CR4 Access\n");
+ if (v3_vmx_handle_cr4_access(info, cr_qual) == -1) {
+ PrintError(info->vm_info, info, "Error in CR4 access handler\n");
+ return -1;
+ }
+ break;
+ case 8:
+ if (v3_vmx_handle_cr8_access(info, cr_qual) == -1) {
+ PrintError(info->vm_info, info, "Error in CR8 access handler\n");
+ return -1;
+ }
+ break;
+ default:
+ PrintError(info->vm_info, info, "Unhandled CR access: %d\n", cr_qual->cr_id);
+ return -1;
+ }
+
+ // TODO: move RIP increment into all of the above individual CR
+ // handlers, not just v3_vmx_handle_cr4_access()
+ if (cr_qual->cr_id != 4)
+ info->rip += exit_info->instr_len;
+
+ break;
+ }
+ case VMX_EXIT_HLT:
+ PrintDebug(info->vm_info, info, "Guest halted\n");
+
+ if (v3_handle_halt(info) == -1) {
+ PrintError(info->vm_info, info, "Error handling halt instruction\n");
+ return -1;
+ }
+
+ break;
+
+ case VMX_EXIT_MONITOR:
+ PrintDebug(info->vm_info, info, "Guest Executing monitor\n");
+
+ if (v3_handle_monitor(info) == -1) {
+ PrintError(info->vm_info, info, "Error handling monitor instruction\n");
+ return -1;
+ }
+
+ break;
+
+ case VMX_EXIT_MWAIT:
+ PrintDebug(info->vm_info, info, "Guest Executing mwait\n");
+
+ if (v3_handle_mwait(info) == -1) {
+ PrintError(info->vm_info, info, "Error handling mwait instruction\n");
+ return -1;
+ }
+
+ break;
+
+
+ case VMX_EXIT_PAUSE:
+ // Handled as NOP
+ info->rip += 2;
+
+ break;
+ case VMX_EXIT_EXTERNAL_INTR:
+ // Interrupts are handled outside switch
+ break;
+ case VMX_EXIT_INTR_WINDOW:
+ // This is handled in the atomic part of the vmx code,
+ // not in the generic (interruptable) vmx handler
+ break;
+ case VMX_EXIT_EXPIRED_PREEMPT_TIMER:
+ V3_Print(info->vm_info, info, "VMX Preempt Timer Expired.\n");
+ // This just forces an exit and is handled outside the switch
+ break;
+
+ default:
+ PrintError(info->vm_info, info, "Unhandled VMX_EXIT: %s (%u), %lu (0x%lx)\n",
+ v3_vmx_exit_code_to_str(basic_info->reason),
+ basic_info->reason,
+ exit_info->exit_qual, exit_info->exit_qual);
+ return -1;
}
- vm->vmcs.guestStateArea.rip += exitinfo->instrLength;
- }
-
- return 0;
-}
-
-static int HandleExternalIRQExit(struct VM *vm)
-{
- struct VMCSExitInfoFields * exitinfo = &(vm->vmcs.exitInfoFields);
- struct VMExitIntInfo * intInfo = (struct VMExitIntInfo *)&(vm->vmcs.exitInfoFields.intInfo);
- PrintTrace("External Interrupt captured\n");
- PrintTrace("IntInfo: %x\n", exitinfo->intInfo);
+#ifdef V3_CONFIG_TELEMETRY
+ if (info->vm_info->enable_telemetry) {
+ v3_telemetry_end_exit(info, exit_info->exit_reason);
+ }
+#endif
- if (!intInfo->valid) {
- // interrupts are off, but this interrupt is not acknoledged (still pending)
- // so we turn on interrupts to deliver appropriately in the
- // host
- PrintTrace("External Interrupt is invald. Turning Interrupts back on\n");
- asm("sti");
return 0;
- }
-
- // At this point, interrupts are off and the interrupt has been
- // acknowledged. We will now handle the interrupt ourselves
- // and turn interrupts back on in the host
-
- PrintTrace("type: %d\n", intInfo->type);
- PrintTrace("number: %d\n", intInfo->nr);
-
- PrintTrace("Interrupt %d occuring now and handled by HandleExternalIRQExit\n",intInfo->nr);
-
- switch (intInfo->type) {
- case 0: { // ext. IRQ
- // In the following, we construct an "int x" instruction
- // where x is the specific interrupt number that is raised
- // then we execute that instruciton
- // because we are in host context, that means it is delivered as normal
- // through the host IDT
-
- ((char*)(&&ext_int_seq_start))[1] = intInfo->nr;
-
- PrintTrace("Interrupt instruction setup done %x\n", *((ushort_t *)(&&ext_int_seq_start)));
-
-ext_int_seq_start:
- asm("int $0");
- }
-
- break;
- case 2: // NMI
- PrintTrace("Type: NMI\n");
- break;
- case 3: // hw exception
- PrintTrace("Type: HW Exception\n");
- break;
- case 4: // sw exception
- PrintTrace("Type: SW Exception\n");
- break;
- default:
- PrintTrace("Invalid Interrupt Type\n");
- return -1;
- }
-
- if (intInfo->valid && intInfo->errorCode) {
- PrintTrace("IntError: %x\n", exitinfo->intErrorCode);
- }
-
-
- return 0;
-
-}
-
-
-
-
-
-
-
-static int HandleExceptionOrNMI(struct VM *vm)
-{
- struct Instruction inst;
- uint_t num;
- uint_t type;
- uint_t errorvalid;
- uint_t error;
- uint_t ext=0;
- uint_t idt=0;
- uint_t ti=0;
- uint_t selectorindex=0;
-
- PrintTrace("Exception or NMI occurred\n");
-
- num=vm->vmcs.exitInfoFields.intInfo & 0xff;
- type=(vm->vmcs.exitInfoFields.intInfo & 0x700)>>8;
- errorvalid=(vm->vmcs.exitInfoFields.intInfo & 0x800)>>11;
- if (errorvalid) {
- error=vm->vmcs.exitInfoFields.intErrorCode;
- ext=error&0x1;
- idt=(error&0x2)>>1;
- ti=(error&0x4)>>2;
- selectorindex=(error>>3)&0xffff;
- }
-
- PrintTrace("Exception %d now - handled by HandleExceptionOrNMI\n",num);
-
- PrintTrace("Exception Number %u : %s\n", num, exception_names[num]);
- PrintTrace("Exception Type %u : %s\n", type, exception_type_names[type]);
- if (errorvalid) {
- if (ext) {
- PrintTrace("External\n");
- } else {
- PrintTrace("%s - Selector Index is %u\n", idt ? "IDT" : ti ? "LDT" : "GDT", selectorindex);
- }
- }
-
- DecodeCurrentInstruction(vm,&inst);
-
- if (inst.type==VM_MOV_TO_CR0) {
- PrintTrace("MOV TO CR0, oldvalue=0x%x, newvalue=0x%x\n",inst.input2, inst.input1);
- if ((inst.input2 & CR0_PE) && !(inst.input1 & CR0_PE) && vm->state==VM_VMXASSIST_STARTUP) {
- // This is VMXAssist signalling for us to turn on V8086 mode and
- // jump into the bios
- PrintTrace("VMXAssist is signaling us for switch to V8086 mode and jump to 0xf000:fff0\n");
- SetupV8086ModeForBoot(vm);
- goto leave;
- } else {
- PrintTrace("Instruction is a write to CR0, but we don't understand it so we'll just exec it\n");
- }
- }
-
-
- PrintTrace("Trying to execute the faulting instruction in VMM context now\n");
- ExecFaultingInstructionInVMM(vm);
-
- leave:
- //
- //PanicUnhandledVMExit(vmcs,regs);
- //VMXPanic();
- return 0;
}
-
-
-
-
-int Do_VMM(struct VMXRegs regs)
+static const char VMX_EXIT_INFO_EXCEPTION_OR_NMI_STR[] = "VMX_EXIT_INFO_EXCEPTION_OR_NMI";
+static const char VMX_EXIT_EXTERNAL_INTR_STR[] = "VMX_EXIT_EXTERNAL_INTR";
+static const char VMX_EXIT_TRIPLE_FAULT_STR[] = "VMX_EXIT_TRIPLE_FAULT";
+static const char VMX_EXIT_INIT_SIGNAL_STR[] = "VMX_EXIT_INIT_SIGNAL";
+static const char VMX_EXIT_STARTUP_IPI_STR[] = "VMX_EXIT_STARTUP_IPI";
+static const char VMX_EXIT_IO_SMI_STR[] = "VMX_EXIT_IO_SMI";
+static const char VMX_EXIT_OTHER_SMI_STR[] = "VMX_EXIT_OTHER_SMI";
+static const char VMX_EXIT_INTR_WINDOW_STR[] = "VMX_EXIT_INTR_WINDOW";
+static const char VMX_EXIT_NMI_WINDOW_STR[] = "VMX_EXIT_NMI_WINDOW";
+static const char VMX_EXIT_TASK_SWITCH_STR[] = "VMX_EXIT_TASK_SWITCH";
+static const char VMX_EXIT_CPUID_STR[] = "VMX_EXIT_CPUID";
+static const char VMX_EXIT_HLT_STR[] = "VMX_EXIT_HLT";
+static const char VMX_EXIT_INVD_STR[] = "VMX_EXIT_INVD";
+static const char VMX_EXIT_INVLPG_STR[] = "VMX_EXIT_INVLPG";
+static const char VMX_EXIT_RDPMC_STR[] = "VMX_EXIT_RDPMC";
+static const char VMX_EXIT_RDTSC_STR[] = "VMX_EXIT_RDTSC";
+static const char VMX_EXIT_RSM_STR[] = "VMX_EXIT_RSM";
+static const char VMX_EXIT_VMCALL_STR[] = "VMX_EXIT_VMCALL";
+static const char VMX_EXIT_VMCLEAR_STR[] = "VMX_EXIT_VMCLEAR";
+static const char VMX_EXIT_VMLAUNCH_STR[] = "VMX_EXIT_VMLAUNCH";
+static const char VMX_EXIT_VMPTRLD_STR[] = "VMX_EXIT_VMPTRLD";
+static const char VMX_EXIT_VMPTRST_STR[] = "VMX_EXIT_VMPTRST";
+static const char VMX_EXIT_VMREAD_STR[] = "VMX_EXIT_VMREAD";
+static const char VMX_EXIT_VMRESUME_STR[] = "VMX_EXIT_VMRESUME";
+static const char VMX_EXIT_VMWRITE_STR[] = "VMX_EXIT_VMWRITE";
+static const char VMX_EXIT_VMXOFF_STR[] = "VMX_EXIT_VMXOFF";
+static const char VMX_EXIT_VMXON_STR[] = "VMX_EXIT_VMXON";
+static const char VMX_EXIT_CR_REG_ACCESSES_STR[] = "VMX_EXIT_CR_REG_ACCESSES";
+static const char VMX_EXIT_MOV_DR_STR[] = "VMX_EXIT_MOV_DR";
+static const char VMX_EXIT_IO_INSTR_STR[] = "VMX_EXIT_IO_INSTR";
+static const char VMX_EXIT_RDMSR_STR[] = "VMX_EXIT_RDMSR";
+static const char VMX_EXIT_WRMSR_STR[] = "VMX_EXIT_WRMSR";
+static const char VMX_EXIT_INVALID_GUEST_STATE_STR[] = "VMX_EXIT_INVALID_GUEST_STATE";
+static const char VMX_EXIT_INVALID_MSR_LOAD_STR[] = "VMX_EXIT_INVALID_MSR_LOAD";
+static const char VMX_EXIT_MWAIT_STR[] = "VMX_EXIT_MWAIT";
+static const char VMX_EXIT_MONITOR_STR[] = "VMX_EXIT_MONITOR";
+static const char VMX_EXIT_PAUSE_STR[] = "VMX_EXIT_PAUSE";
+static const char VMX_EXIT_INVALID_MACHINE_CHECK_STR[] = "VMX_EXIT_INVALIDE_MACHINE_CHECK";
+static const char VMX_EXIT_TPR_BELOW_THRESHOLD_STR[] = "VMX_EXIT_TPR_BELOW_THRESHOLD";
+static const char VMX_EXIT_APIC_STR[] = "VMX_EXIT_APIC";
+static const char VMX_EXIT_GDTR_IDTR_STR[] = "VMX_EXIT_GDTR_IDTR";
+static const char VMX_EXIT_LDTR_TR_STR[] = "VMX_EXIT_LDTR_TR";
+static const char VMX_EXIT_EPT_VIOLATION_STR[] = "VMX_EXIT_EPT_VIOLATION";
+static const char VMX_EXIT_EPT_CONFIG_STR[] = "VMX_EXIT_EPT_CONFIG";
+static const char VMX_EXIT_INVEPT_STR[] = "VMX_EXIT_INVEPT";
+static const char VMX_EXIT_RDTSCP_STR[] = "VMX_EXIT_RDTSCP";
+static const char VMX_EXIT_EXPIRED_PREEMPT_TIMER_STR[] = "VMX_EXIT_EXPIRED_PREEMPT_TIMER";
+static const char VMX_EXIT_INVVPID_STR[] = "VMX_EXIT_INVVPID";
+static const char VMX_EXIT_WBINVD_STR[] = "VMX_EXIT_WBINVD";
+static const char VMX_EXIT_XSETBV_STR[] = "VMX_EXIT_XSETBV";
+
+const char * v3_vmx_exit_code_to_str(vmx_exit_t exit)
{
-
- ullong_t vmcs_ptr = 0;
- uint_t vmcs_ptr_low = 0;
- int ret = 0;
- uint_t vmx_abort = 0;
-
-
-
- PrintTrace("Vm Exit\n");
- ret = VMCS_STORE(&vmcs_ptr);
- vmcs_ptr &= 0xffffffff;
- vmcs_ptr_low += vmcs_ptr;
-
-
-
-
- PrintTrace("ret=%d\n", ret);
- PrintTrace("Revision: %x\n", *(uint_t *)(vmcs_ptr_low));
- vmx_abort = *(uint_t*)(((char *)vmcs_ptr_low)+4);
-
- struct VM *vm = FindVM();
-
- if (vmx_abort != 0) {
- PrintTrace("VM ABORTED w/ code: %x\n", vmx_abort);
- return -1;
- }
-
- vm->registers = regs;
-
- if (CopyOutVMCSData(&(vm->vmcs)) != 0) {
- PrintTrace("Could not copy out VMCS\n");
- return -1;
- }
-
-
- PrintTrace("Guest esp: 0x%x (%u)\n", vm->vmcs.guestStateArea.rsp, vm->vmcs.guestStateArea.rsp);
-
- PrintTrace("VM Exit for reason: %d (%x)\n",
- vm->vmcs.exitInfoFields.reason & 0x00000fff,
- vm->vmcs.exitInfoFields.reason);
-
- if (vm->vmcs.exitInfoFields.reason & (0x1<<29) ) {
- PrintTrace("VM Exit is from VMX root operation. Panicking\n");
- VMXPanic();
- }
-
- if (vm->vmcs.exitInfoFields.reason & (0x1<<31) ) {
- PrintTrace("VM Exit is due to a VM entry failure. Shouldn't happen here. Panicking\n");
- PrintTrace_VMCSData(&(vm->vmcs));
- VMXPanic();
- }
-
- switch (vm->vmcs.exitInfoFields.reason) {
- case VM_EXIT_REASON_INFO_EXCEPTION_OR_NMI:
- ret = HandleExceptionOrNMI(vm);
- break;
- case VM_EXIT_REASON_EXTERNAL_INTR:
- ret = HandleExternalIRQExit(vm);
- break;
- case VM_EXIT_REASON_TRIPLE_FAULT:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_INIT_SIGNAL:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_STARTUP_IPI:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_IO_SMI:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_OTHER_SMI:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_INTR_WINDOW:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_NMI_WINDOW:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_TASK_SWITCH:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_CPUID:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_INVD:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_INVLPG:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_RDPMC:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_RDTSC:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_RSM:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMCALL:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMCLEAR:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMLAUNCH:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMPTRLD:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMPTRST:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMREAD:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMRESUME:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMWRITE:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMXOFF:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_VMXON:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_CR_REG_ACCESSES:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_MOV_DR:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_IO_INSTR:
- ret = HandleInOutExit(vm);
- break;
- case VM_EXIT_REASON_RDMSR:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_WRMSR:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_ENTRY_FAIL_INVALID_GUEST_STATE:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_ENTRY_FAIL_MSR_LOAD:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_MWAIT:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_MONITOR:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_PAUSE:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_ENTRY_FAILURE_MACHINE_CHECK:
- ret = PanicUnhandledVMExit(vm);
- break;
- case VM_EXIT_REASON_TPR_BELOW_THRESHOLD:
- ret = PanicUnhandledVMExit(vm);
- break;
- default:
- ret = PanicUnhandledVMExit(vm);
- break;
- }
-
-
- regs = vm->registers;
- CopyInVMCSData(&(vm->vmcs));
-
- /*
- {
- VMCS_CLEAR(vmcs_ptr);
+ switch (exit) {
+ case VMX_EXIT_INFO_EXCEPTION_OR_NMI:
+ return VMX_EXIT_INFO_EXCEPTION_OR_NMI_STR;
+ case VMX_EXIT_EXTERNAL_INTR:
+ return VMX_EXIT_EXTERNAL_INTR_STR;
+ case VMX_EXIT_TRIPLE_FAULT:
+ return VMX_EXIT_TRIPLE_FAULT_STR;
+ case VMX_EXIT_INIT_SIGNAL:
+ return VMX_EXIT_INIT_SIGNAL_STR;
+ case VMX_EXIT_STARTUP_IPI:
+ return VMX_EXIT_STARTUP_IPI_STR;
+ case VMX_EXIT_IO_SMI:
+ return VMX_EXIT_IO_SMI_STR;
+ case VMX_EXIT_OTHER_SMI:
+ return VMX_EXIT_OTHER_SMI_STR;
+ case VMX_EXIT_INTR_WINDOW:
+ return VMX_EXIT_INTR_WINDOW_STR;
+ case VMX_EXIT_NMI_WINDOW:
+ return VMX_EXIT_NMI_WINDOW_STR;
+ case VMX_EXIT_TASK_SWITCH:
+ return VMX_EXIT_TASK_SWITCH_STR;
+ case VMX_EXIT_CPUID:
+ return VMX_EXIT_CPUID_STR;
+ case VMX_EXIT_HLT:
+ return VMX_EXIT_HLT_STR;
+ case VMX_EXIT_INVD:
+ return VMX_EXIT_INVD_STR;
+ case VMX_EXIT_INVLPG:
+ return VMX_EXIT_INVLPG_STR;
+ case VMX_EXIT_RDPMC:
+ return VMX_EXIT_RDPMC_STR;
+ case VMX_EXIT_RDTSC:
+ return VMX_EXIT_RDTSC_STR;
+ case VMX_EXIT_RSM:
+ return VMX_EXIT_RSM_STR;
+ case VMX_EXIT_VMCALL:
+ return VMX_EXIT_VMCALL_STR;
+ case VMX_EXIT_VMCLEAR:
+ return VMX_EXIT_VMCLEAR_STR;
+ case VMX_EXIT_VMLAUNCH:
+ return VMX_EXIT_VMLAUNCH_STR;
+ case VMX_EXIT_VMPTRLD:
+ return VMX_EXIT_VMPTRLD_STR;
+ case VMX_EXIT_VMPTRST:
+ return VMX_EXIT_VMPTRST_STR;
+ case VMX_EXIT_VMREAD:
+ return VMX_EXIT_VMREAD_STR;
+ case VMX_EXIT_VMRESUME:
+ return VMX_EXIT_VMRESUME_STR;
+ case VMX_EXIT_VMWRITE:
+ return VMX_EXIT_VMWRITE_STR;
+ case VMX_EXIT_VMXOFF:
+ return VMX_EXIT_VMXOFF_STR;
+ case VMX_EXIT_VMXON:
+ return VMX_EXIT_VMXON_STR;
+ case VMX_EXIT_CR_REG_ACCESSES:
+ return VMX_EXIT_CR_REG_ACCESSES_STR;
+ case VMX_EXIT_MOV_DR:
+ return VMX_EXIT_MOV_DR_STR;
+ case VMX_EXIT_IO_INSTR:
+ return VMX_EXIT_IO_INSTR_STR;
+ case VMX_EXIT_RDMSR:
+ return VMX_EXIT_RDMSR_STR;
+ case VMX_EXIT_WRMSR:
+ return VMX_EXIT_WRMSR_STR;
+ case VMX_EXIT_INVALID_GUEST_STATE:
+ return VMX_EXIT_INVALID_GUEST_STATE_STR;
+ case VMX_EXIT_INVALID_MSR_LOAD:
+ return VMX_EXIT_INVALID_MSR_LOAD_STR;
+ case VMX_EXIT_MWAIT:
+ return VMX_EXIT_MWAIT_STR;
+ case VMX_EXIT_MONITOR:
+ return VMX_EXIT_MONITOR_STR;
+ case VMX_EXIT_PAUSE:
+ return VMX_EXIT_PAUSE_STR;
+ case VMX_EXIT_INVALID_MACHINE_CHECK:
+ return VMX_EXIT_INVALID_MACHINE_CHECK_STR;
+ case VMX_EXIT_TPR_BELOW_THRESHOLD:
+ return VMX_EXIT_TPR_BELOW_THRESHOLD_STR;
+ case VMX_EXIT_APIC:
+ return VMX_EXIT_APIC_STR;
+ case VMX_EXIT_GDTR_IDTR:
+ return VMX_EXIT_GDTR_IDTR_STR;
+ case VMX_EXIT_LDTR_TR:
+ return VMX_EXIT_LDTR_TR_STR;
+ case VMX_EXIT_EPT_VIOLATION:
+ return VMX_EXIT_EPT_VIOLATION_STR;
+ case VMX_EXIT_EPT_CONFIG:
+ return VMX_EXIT_EPT_CONFIG_STR;
+ case VMX_EXIT_INVEPT:
+ return VMX_EXIT_INVEPT_STR;
+ case VMX_EXIT_RDTSCP:
+ return VMX_EXIT_RDTSCP_STR;
+ case VMX_EXIT_EXPIRED_PREEMPT_TIMER:
+ return VMX_EXIT_EXPIRED_PREEMPT_TIMER_STR;
+ case VMX_EXIT_INVVPID:
+ return VMX_EXIT_INVVPID_STR;
+ case VMX_EXIT_WBINVD:
+ return VMX_EXIT_WBINVD_STR;
+ case VMX_EXIT_XSETBV:
+ return VMX_EXIT_XSETBV_STR;
}
- */
-
- PrintTrace("Returning from Do_VMM: %d\n", ret);
-
- return ret;
-}
-
-
-
-
-
-
-// simply execute the instruction that is faulting and return
-static int ExecFaultingInstructionInVMM(struct VM *vm)
-{
- uint_t address = GetLinearIP(vm);
- myregs = (uint_t)&(vm->registers);
-
-
- PrintTrace("About the execute faulting instruction!\n");
- PrintTrace("Instruction is:\n");
- PrintTraceMemDump((void*)(address),vm->vmcs.exitInfoFields.instrLength);
-
-
- PrintTrace("The template code is:\n");
- PrintTraceMemDump(&&template_code,TEMPLATE_CODE_LEN);
-
- // clone the template code
- //memcpy(&&template_code,code,MAX_CODE);
-
- // clean up the nop field
- memset(&&template_code+INSTR_OFFSET_START,*((uchar_t *)(&&template_code+0)),NOP_SEQ_LEN);
- // overwrite the nops with the faulting instruction
- memcpy(&&template_code+INSTR_OFFSET_START, (void*)(address),vm->vmcs.exitInfoFields.instrLength);
-
- PrintTrace("Finished modifying the template code, which now is:\n");
- PrintTraceMemDump(&&template_code,TEMPLATE_CODE_LEN);
-
- PrintTrace("Now entering modified template code\n");
-
-
- template_code:
- // Template code stores current registers,
- // restores registers, has a landing pad of noops
- // that will be modified, restores current regs, and then returns
- //
- // Note that this currently ignores cr0, cr3, cr4, dr7, rsp, rip, and rflags
- // it also blythly assumes it can exec the instruction in protected mode
- //
- __asm__ __volatile__ ("nop\n" // for cloning purposes (1 byte)
- "pusha\n" // push our current regs onto the current stack (1 byte)
- "movl %0, %%eax\n" // Get oldesp location (5 bytes)
- "movl %%esp, (%%eax)\n" // store the current stack pointer in oldesp (2 bytes)
- "movl %1, %%eax\n" // Get regs location (5 bytes)
- "movl (%%eax), %%esp\n" // point esp at regs (2 bytes)
- "popa\n" // now we have the VM registers restored (1 byte)
- "nop\n" // now we execute the actual instruction (1 byte x 10)
- "nop\n" // now we execute the actual instruction
- "nop\n" // now we execute the actual instruction
- "nop\n" // now we execute the actual instruction
- "nop\n" // now we execute the actual instruction
- "nop\n" // now we execute the actual instruction
- "nop\n" // now we execute the actual instruction
- "nop\n" // now we execute the actual instruction
- "nop\n" // now we execute the actual instruction
- "nop\n" // now we execute the actual instruction
- // need to copy back to the VM registers!
- "movl %0, %%eax\n" // recapture oldesp location (5 bytes)
- "movl (%%eax), %%esp\n" // now we'll get our esp back from oldesp (2 bytes)
- "popa\n" // and restore our GP regs and we're done (1 byte)
- : "=m"(oldesp)
- : "m"(myregs)
- );
-
- PrintTrace("Survived executing the faulting instruction and returning.\n");
-
- vm->vmcs.guestStateArea.rip += vm->vmcs.exitInfoFields.instrLength;
-
- return 0;
-
+ return NULL;
}
