X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=blobdiff_plain;f=palacios%2Fsrc%2Fgeekos%2Fvmx.c;fp=palacios%2Fsrc%2Fgeekos%2Fvmx.c;h=0000000000000000000000000000000000000000;hp=4ce96e04581b6ed8145025ff9edbf8317a714f5b;hb=ddc16b0737cf58f7aa90a69c6652cdf4090aec51;hpb=626595465a2c6987606a6bc697df65130ad8c2d3 diff --git a/palacios/src/geekos/vmx.c b/palacios/src/geekos/vmx.c deleted file mode 100644 index 4ce96e0..0000000 --- a/palacios/src/geekos/vmx.c +++ /dev/null @@ -1,894 +0,0 @@ -#include -#include -#include -#include -#include -#include -#include - - -#include -#include - - -extern void Get_MSR(unsigned int msr, uint_t * high, uint_t * low); -extern void Set_MSR(unsigned int msr, uint_t high, uint_t low); -extern int Enable_VMX(ullong_t regionPtr); -extern int cpuid_ecx(unsigned int op); -extern int Launch_VM(ullong_t vmcsPtr, uint_t eip); - -#define NUMPORTS 65536 - - -#define VMXASSIST_INFO_PORT 0x0e9 -#define ROMBIOS_PANIC_PORT 0x400 -#define ROMBIOS_PANIC_PORT2 0x401 -#define ROMBIOS_INFO_PORT 0x402 -#define ROMBIOS_DEBUG_PORT 0x403 - - - -static struct VM theVM; - -static uint_t GetLinearIP(struct VM *vm) -{ - if (vm->state==VM_VMXASSIST_V8086_BIOS || vm->state==VM_VMXASSIST_V8086) { - return vm->vmcs.guestStateArea.cs.baseAddr + vm->vmcs.guestStateArea.rip; - } else { - return vm->vmcs.guestStateArea.rip; - } -} - - -static void VMXPanic() -{ - while (1) {} -} - - -#define MAX_CODE 512 -#define INSTR_OFFSET_START 17 -#define NOP_SEQ_LEN 10 -#define INSTR_OFFSET_END (INSTR_OFFSET_START+NOP_SEQ_LEN-1) -#define TEMPLATE_CODE_LEN 35 - -uint_t oldesp=0; -uint_t myregs=0; - -// 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); - - - SerialPrintLevel(1000,"About the execute faulting instruction!\n"); - SerialPrintLevel(1000,"Instruction is:\n"); - SerialMemDump((void*)(address),vm->vmcs.exitInfoFields.instrLength); - - - SerialPrintLevel(1000,"The template code is:\n"); - SerialMemDump(&&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); - - SerialPrintLevel(1000,"Finished modifying the template code, which now is:\n"); - SerialMemDump(&&template_code,TEMPLATE_CODE_LEN); - - SerialPrintLevel(1000,"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) - ); - - SerialPrintLevel(1000,"Survived executing the faulting instruction and returning.\n"); - - vm->vmcs.guestStateArea.rip += vm->vmcs.exitInfoFields.instrLength; - - return 0; - -} - - -VmxOnRegion * InitVMX() { - VmxOnRegion * region = NULL; - - unsigned int ret; - union VMX_MSR featureMSR; - - ret = cpuid_ecx(1); - if (ret & CPUID_1_ECX_VTXFLAG) { - Get_MSR(IA32_FEATURE_CONTROL_MSR, &featureMSR.regs.high, &featureMSR.regs.low); - - SerialPrintLevel(100,"MSRREGlow: 0x%.8x\n", featureMSR.regs.low); - if ((featureMSR.regs.low & FEATURE_CONTROL_VALID) != FEATURE_CONTROL_VALID) { - PrintBoth("VMX is locked -- enable in the BIOS\n"); - return NULL; - } - } else { - PrintBoth("VMX not supported on this cpu\n"); - return NULL; - } - - region = CreateVmxOnRegion(); - - - ret = Enable_VMX((ullong_t)((uint_t)region)); - if (ret == 0) { - PrintBoth("VMX Enabled\n"); - } else { - PrintBoth("VMX failure (ret = %d)\n", ret); - } - - theVM.vmxonregion = region; - - return region; -} - -extern uint_t VMCS_CLEAR(); -extern uint_t VMCS_LOAD(); -extern uint_t VMCS_STORE(); -extern uint_t VMCS_LAUNCH(); -extern uint_t VMCS_RESUME(); -extern uint_t Init_VMCS_HostState(); -extern uint_t Init_VMCS_GuestState(); - -void SetCtrlBitsCorrectly(int msrno, int vmcsno) -{ - uint_t reserved =0; - union VMX_MSR msr; - - SerialPrintLevel(100,"SetCtrlBitsCorrectly(%x,%x)\n",msrno,vmcsno); - Get_MSR(msrno, &msr.regs.high, &msr.regs.low); - SerialPrintLevel(100,"MSR %x = %x : %x \n", msrno, msr.regs.high, msr.regs.low); - reserved = msr.regs.low; - reserved &= msr.regs.high; - VMCS_WRITE(vmcsno, &reserved); -} - - -void SetCRBitsCorrectly(int msr0no, int msr1no, int vmcsno) -{ - uint_t reserved =0; - union VMX_MSR msr0, msr1; - - SerialPrintLevel(100,"SetCRBitsCorrectly(%x,%x,%x)\n",msr0no,msr1no,vmcsno); - Get_MSR(msr0no, &msr0.regs.high, &msr0.regs.low); - Get_MSR(msr1no, &msr1.regs.high, &msr1.regs.low); - SerialPrintLevel(100,"MSR %x = %x, %x = %x \n", msr0no, msr0.regs.low, msr1no, msr1.regs.low); - reserved = msr0.regs.low; - reserved &= msr1.regs.low; - VMCS_WRITE(vmcsno, &reserved); -} - - -extern int Get_CR2(); -extern int vmRunning; - - -static int PanicUnhandledVMExit(struct VM *vm) -{ - Print("Panicking due to VMExit with reason %u\n",vm->vmcs.exitInfoFields.reason); - SerialPrint("Panicking due to VMExit with reason %u\n",vm->vmcs.exitInfoFields.reason); - SerialPrint_VMCS_ALL(); - SerialPrint_VMX_Regs(&(vm->registers)); - VMXPanic(); - return 0; -} - - -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 - SerialPrintLevel(1000,"VMXASSIST Output Port\n"); - PrintBoth("%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 - SerialPrintLevel(1000,"ROMBIOS Output Port\n"); - // PrintBoth("%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 - SerialPrintLevel(1000,"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); - - SerialPrintLevel(1000,"Handling Input/Output Instruction Exit\n"); - if (SERIAL_PRINT_DEBUG && 1000>=SERIAL_PRINT_DEBUG_LEVEL) { - SerialPrint_VMX_Regs(regs); - } - SerialPrintLevel(1000,"Qualifications=0x%x\n",exitinfo->qualification); - SerialPrintLevel(1000,"Reason=0x%x\n",exitinfo->reason); - SerialPrintLevel(1000,"IO Port: 0x%x (%d)\n", qual->port, qual->port); - SerialPrintLevel(1000,"Instruction Info=%x\n",exitinfo->instrInfo); - SerialPrintLevel(1000,"%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) { - SerialPrintLevel(1000, "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; - SerialPrintLevel(1000,"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); - SerialPrintLevel(1000,"Wrote 0x%x to port\n",(regs->eax)); - } - 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); - - SerialPrintLevel(1000,"External Interrupt captured\n"); - SerialPrintLevel(100,"IntInfo: %x\n", exitinfo->intInfo); - - - 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 - SerialPrintLevel(100,"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 - - SerialPrintLevel(100,"type: %d\n", intInfo->type); - SerialPrintLevel(100,"number: %d\n", intInfo->nr); - - SerialPrint("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; - - SerialPrintLevel(100,"Interrupt instruction setup done %x\n", *((ushort_t *)(&&ext_int_seq_start))); - -ext_int_seq_start: - asm("int $0"); - } - - break; - case 2: // NMI - SerialPrintLevel(100,"Type: NMI\n"); - break; - case 3: // hw exception - SerialPrintLevel(100,"Type: HW Exception\n"); - break; - case 4: // sw exception - SerialPrintLevel(100,"Type: SW Exception\n"); - break; - default: - SerialPrintLevel(100,"Invalid Interrupt Type\n"); - return -1; - } - - if (intInfo->valid && intInfo->errorCode) { - SerialPrintLevel(100,"IntError: %x\n", exitinfo->intErrorCode); - } - - - return 0; - -} - - - -void DecodeCurrentInstruction(struct VM *vm, struct Instruction *inst) -{ - // this is a gruesome hack - uint_t address = GetLinearIP(vm); - uint_t length = vm->vmcs.exitInfoFields.instrLength; - unsigned char *t = (unsigned char *) address; - - - - SerialPrintLevel(100,"DecodeCurrentInstruction: instruction is\n"); - SerialMemDump(t,length); - - if (length==3 && t[0]==0x0f && t[1]==0x22 && t[2]==0xc0) { - // mov from eax to cr0 - // usually used to signal - inst->type=VM_MOV_TO_CR0; - inst->address=address; - inst->size=length; - inst->input1=vm->registers.eax; - inst->input2=vm->vmcs.guestStateArea.cr0; - inst->output=vm->registers.eax; - SerialPrintLevel(100,"MOV FROM EAX TO CR0\n"); - } else { - inst->type=VM_UNKNOWN_INST; - } -} - - -static void V8086ModeSegmentRegisterFixup(struct VM *vm) -{ - vm->vmcs.guestStateArea.cs.baseAddr=vm->vmcs.guestStateArea.cs.selector<<4; - vm->vmcs.guestStateArea.es.baseAddr=vm->vmcs.guestStateArea.es.selector<<4; - vm->vmcs.guestStateArea.ss.baseAddr=vm->vmcs.guestStateArea.ss.selector<<4; - vm->vmcs.guestStateArea.ds.baseAddr=vm->vmcs.guestStateArea.ds.selector<<4; - vm->vmcs.guestStateArea.fs.baseAddr=vm->vmcs.guestStateArea.fs.selector<<4; - vm->vmcs.guestStateArea.gs.baseAddr=vm->vmcs.guestStateArea.gs.selector<<4; -} - -static void SetupV8086ModeForBoot(struct VM *vm) -{ - vm->state = VM_VMXASSIST_V8086_BIOS; - - // Put guest into V8086 mode on return - vm->vmcs.guestStateArea.rflags |= EFLAGS_VM | EFLAGS_IOPL_HI | EFLAGS_IOPL_LO ; - - // We will start at f000:fff0 on return - // - // We want this to look as much as possible as a processor - // reset - vm->vmcs.guestStateArea.rip = 0xfff0; // note, 16 bit rip - vm->vmcs.guestStateArea.cs.selector = 0xf000; - vm->vmcs.guestStateArea.cs.limit=0xffff; - vm->vmcs.guestStateArea.cs.access.as_dword = 0xf3; - - vm->vmcs.guestStateArea.ss.selector = 0x0000; - vm->vmcs.guestStateArea.ss.limit=0xffff; - vm->vmcs.guestStateArea.ss.access.as_dword = 0xf3; - - vm->vmcs.guestStateArea.ds.selector = 0x0000; - vm->vmcs.guestStateArea.ds.limit=0xffff; - vm->vmcs.guestStateArea.ds.access.as_dword = 0xf3; - - vm->vmcs.guestStateArea.es.selector = 0x0000; - vm->vmcs.guestStateArea.es.limit=0xffff; - vm->vmcs.guestStateArea.es.access.as_dword = 0xf3; - - vm->vmcs.guestStateArea.fs.selector = 0x0000; - vm->vmcs.guestStateArea.fs.limit=0xffff; - vm->vmcs.guestStateArea.fs.access.as_dword = 0xf3; - - vm->vmcs.guestStateArea.gs.selector = 0x0000; - vm->vmcs.guestStateArea.gs.limit=0xffff; - vm->vmcs.guestStateArea.gs.access.as_dword = 0xf3; - - V8086ModeSegmentRegisterFixup(vm); - - SerialPrint_VMCSData(&(vm->vmcs)); - -} - - - -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; - - SerialPrintLevel(1000,"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; - } - - SerialPrint("Exception %d now - handled by HandleExceptionOrNMI\n",num); - - SerialPrintLevel(1000,"Exception Number %u : %s\n", num, exception_names[num]); - SerialPrintLevel(1000,"Exception Type %u : %s\n", type, exception_type_names[type]); - if (errorvalid) { - if (ext) { - SerialPrintLevel(1000,"External\n"); - } else { - SerialPrintLevel(1000,"%s - Selector Index is %u\n", idt ? "IDT" : ti ? "LDT" : "GDT", selectorindex); - } - } - - DecodeCurrentInstruction(vm,&inst); - - if (inst.type==VM_MOV_TO_CR0) { - SerialPrintLevel(1000,"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 - SerialPrintLevel(1000,"VMXAssist is signaling us for switch to V8086 mode and jump to 0xf000:fff0\n"); - SetupV8086ModeForBoot(vm); - goto leave; - } else { - SerialPrintLevel(1000,"Instruction is a write to CR0, but we don't understand it so we'll just exec it\n"); - } - } - - - SerialPrintLevel(1000,"Trying to execute the faulting instruction in VMM context now\n"); - ExecFaultingInstructionInVMM(vm); - - leave: - // - //PanicUnhandledVMExit(vmcs,regs); - //VMXPanic(); - return 0; -} - - -static struct VM *FindVM() -{ - return &theVM; -} - - -int Do_VMM(struct VMXRegs regs) -{ - - ullong_t vmcs_ptr = 0; - uint_t vmcs_ptr_low = 0; - int ret = 0; - uint_t vmx_abort = 0; - - - - SerialPrintLevel(100,"Vm Exit\n"); - ret = VMCS_STORE(&vmcs_ptr); - vmcs_ptr &= 0xffffffff; - vmcs_ptr_low += vmcs_ptr; - - - SerialPrintLevel(100,"ret=%d\n", ret); - SerialPrintLevel(100,"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) { - SerialPrintLevel(1000,"VM ABORTED w/ code: %x\n", vmx_abort); - return -1; - } - - vm->registers = regs; - - if (CopyOutVMCSData(&(vm->vmcs)) != 0) { - SerialPrintLevel(1000,"Could not copy out VMCS\n"); - return -1; - } - - SerialPrintLevel(100,"VM Exit for reason: %d (%x)\n", - vm->vmcs.exitInfoFields.reason & 0x00000fff, - vm->vmcs.exitInfoFields.reason); - - if (vm->vmcs.exitInfoFields.reason & (0x1<<29) ) { - SerialPrintLevel(1000,"VM Exit is from VMX root operation. Panicking\n"); - VMXPanic(); - } - - if (vm->vmcs.exitInfoFields.reason & (0x1<<31) ) { - SerialPrintLevel(1000,"VM Exit is due to a VM entry failure. Shouldn't happen here. Panicking\n"); - SerialPrint_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); - } - */ - - SerialPrintLevel(100,"Returning from Do_VMM: %d\n", ret); - - return ret; -} - - -static void ConfigureExits(struct VM *vm) -{ - CopyOutVMCSExecCtrlFields(&(vm->vmcs.execCtrlFields)); - - vm->vmcs.execCtrlFields.pinCtrls |= 0 - // EXTERNAL_INTERRUPT_EXITING - | NMI_EXITING; - vm->vmcs.execCtrlFields.procCtrls |= 0 - // INTERRUPT_WINDOWS_EXIT - | USE_TSC_OFFSETTING - | HLT_EXITING - |INVLPG_EXITING - |MWAIT_EXITING - |RDPMC_EXITING - |RDTSC_EXITING - |MOVDR_EXITING - |UNCONDITION_IO_EXITING - |MONITOR_EXITING - |PAUSE_EXITING ; - - CopyInVMCSExecCtrlFields(&(vm->vmcs.execCtrlFields)); - - CopyOutVMCSExitCtrlFields(&(vm->vmcs.exitCtrlFields)); - - vm->vmcs.exitCtrlFields.exitCtrls |= ACK_IRQ_ON_EXIT; - - CopyInVMCSExitCtrlFields(&(vm->vmcs.exitCtrlFields)); - - -/* VMCS_READ(VM_EXIT_CTRLS, &flags); */ -/* flags |= ACK_IRQ_ON_EXIT; */ -/* VMCS_WRITE(VM_EXIT_CTRLS, &flags); */ -} - - -extern int RunVMM(); -extern int SAFE_VM_LAUNCH(); - -int MyLaunch(struct VM *vm) -{ - ullong_t vmcs = (ullong_t)((uint_t) (vm->vmcsregion)); - uint_t entry_eip = vm->descriptor.entry_ip; - uint_t exit_eip = vm->descriptor.exit_eip; - uint_t guest_esp = vm->descriptor.guest_esp; - uint_t f = 0xffffffff; - uint_t tmpReg = 0; - int ret; - int vmm_ret = 0; - - exit_eip=(uint_t)RunVMM; - - SerialPrintLevel(100,"Clear\n"); - VMCS_CLEAR(vmcs); - SerialPrintLevel(100,"Load\n"); - VMCS_LOAD(vmcs); - - - SerialPrintLevel(100,"VMCS_LINK_PTR\n"); - VMCS_WRITE(VMCS_LINK_PTR, &f); - SerialPrintLevel(100,"VMCS_LINK_PTR_HIGH\n"); - VMCS_WRITE(VMCS_LINK_PTR_HIGH, &f); - - - SetCtrlBitsCorrectly(IA32_VMX_PINBASED_CTLS_MSR, PIN_VM_EXEC_CTRLS); - SetCtrlBitsCorrectly(IA32_VMX_PROCBASED_CTLS_MSR, PROC_VM_EXEC_CTRLS); - SetCtrlBitsCorrectly(IA32_VMX_EXIT_CTLS_MSR, VM_EXIT_CTRLS); - SetCtrlBitsCorrectly(IA32_VMX_ENTRY_CTLS_MSR, VM_ENTRY_CTRLS); - - // - // - //SetCtrlBitsCorrectly(IA32_something,GUEST_IA32_DEBUGCTL); - //SetCtrlBitsCorrectly(IA32_something,GUEST_IA32_DEBUGCTL_HIGH); - - - /* Host state */ - SerialPrintLevel(100,"Setting up host state\n"); - SetCRBitsCorrectly(IA32_VMX_CR0_FIXED0_MSR, IA32_VMX_CR0_FIXED1_MSR, HOST_CR0); - SetCRBitsCorrectly(IA32_VMX_CR4_FIXED0_MSR, IA32_VMX_CR4_FIXED1_MSR, HOST_CR4); - ret = Init_VMCS_HostState(); - - if (ret != VMX_SUCCESS) { - if (ret == VMX_FAIL_VALID) { - SerialPrintLevel(100,"Init Host state: VMCS FAILED WITH ERROR\n"); - } else { - SerialPrintLevel(100,"Init Host state: Invalid VMCS\n"); - } - return ret; - } - - // SerialPrintLevel(100,"HOST_RIP: %x (%u)\n", exit_eip, exit_eip); - VMCS_WRITE(HOST_RIP, &exit_eip); - - /* Guest state */ - SerialPrintLevel(100,"Setting up guest state\n"); - SerialPrintLevel(100,"GUEST_RIP: %x (%u)\n", entry_eip, entry_eip); - VMCS_WRITE(GUEST_RIP,&entry_eip); - - SetCRBitsCorrectly(IA32_VMX_CR0_FIXED0_MSR, IA32_VMX_CR0_FIXED1_MSR, GUEST_CR0); - SetCRBitsCorrectly(IA32_VMX_CR4_FIXED0_MSR, IA32_VMX_CR4_FIXED1_MSR, GUEST_CR4); - ret = Init_VMCS_GuestState(); - - SerialPrintLevel(100,"InitGuestState returned\n"); - if (ret != VMX_SUCCESS) { - if (ret == VMX_FAIL_VALID) { - SerialPrintLevel(100,"Init Guest state: VMCS FAILED WITH ERROR\n"); - } else { - SerialPrintLevel(100,"Init Guest state: Invalid VMCS\n"); - } - return ret; - } - SerialPrintLevel(100,"GUEST_RSP: %x (%u)\n", guest_esp, (uint_t)guest_esp); - VMCS_WRITE(GUEST_RSP,&guest_esp); - - // tmpReg = 0x4100; - tmpReg = 0xffffffff; - if (VMCS_WRITE(EXCEPTION_BITMAP,&tmpReg ) != VMX_SUCCESS) { - Print("Bitmap error\n"); - } - - ConfigureExits(vm); - - SerialPrintLevel(100,"VMCS_LAUNCH\n"); - - vm->state=VM_VMXASSIST_STARTUP; - - vmm_ret = SAFE_VM_LAUNCH(); - - SerialPrintLevel(100,"VMM error %d\n", vmm_ret); - - return vmm_ret; -} - - - - -int VMLaunch(struct VMDescriptor *vm) -{ - VMCS * vmcs = CreateVMCS(); - int rc; - - ullong_t vmcs_ptr = (ullong_t)((uint_t)vmcs); - uint_t top = (vmcs_ptr>>32)&0xffffffff; - uint_t bottom = (vmcs_ptr)&0xffffffff; - - theVM.vmcsregion = vmcs; - theVM.descriptor = *vm; - - SerialPrintLevel(100,"vmcs_ptr_top=%x vmcs_ptr_bottom=%x, eip=%x\n", top, bottom, vm->entry_ip); - rc=MyLaunch(&theVM); // vmcs_ptr, vm->entry_ip, vm->exit_eip, vm->guest_esp); - SerialPrintLevel(100,"Returned from MyLaunch();\n"); - return rc; -} - - -VmxOnRegion * CreateVmxOnRegion() { - union VMX_MSR basicMSR; - VmxOnRegion * region = (VmxOnRegion *)Alloc_Page(); - - Get_MSR(IA32_VMX_BASIC_MSR, &basicMSR.regs.high, &basicMSR.regs.low); - // memcpy(region, &basicMSR.vmxBasic.revision, sizeof(uint_t)); - - *(ulong_t*)region = basicMSR.vmxBasic.revision; - - Print("VMX revision: 0x%lu\n", *(ulong_t *)region); - - return region; -} - -VMCS * CreateVMCS() { - union VMX_MSR basicMSR; - VMCS * vmcs = (VMCS *)Alloc_Page(); - - Get_MSR(IA32_VMX_BASIC_MSR, &basicMSR.regs.high, &basicMSR.regs.low); - *(ulong_t *)vmcs = basicMSR.vmxBasic.revision; - *(ulong_t *)((char*)vmcs + 4) = 0; - - SerialPrintLevel(100,"VMCS Region size: %u\n", basicMSR.vmxBasic.regionSize); - SerialPrintLevel(100,"VMCS Abort: %x\n",*(uint_t *)(((char*)vmcs)+4)); - - return vmcs; -} - -