*/
-/* Eventually we want to get rid of these */
-
-#include <geekos/cpu.h>
-#include <geekos/io_devs.h>
-#include <geekos/io.h>
-/* ** */
-
#include <palacios/vmx.h>
#include <palacios/vmcs.h>
#include <palacios/vmm.h>
+
+
+//
+//
+// CRUFT
+//
+//
+
+
+
#include <palacios/vmm_util.h>
#include <palacios/vmm_string.h>
-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
static struct VM theVM;
-static uint_t GetLinearIP(struct VM *vm)
-{
- if (vm->state==VM_VMXASSIST_V8086_BIOS || vm->state==VM_VMXASSIST_V8086) {
+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
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);
-
- 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;
-
-}
-
-
-int is_vmx_capable() {
- uint_t 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);
-
- PrintTrace("MSRREGlow: 0x%.8x\n", featureMSR.regs.low);
-
- if ((featureMSR.regs.low & FEATURE_CONTROL_VALID) != FEATURE_CONTROL_VALID) {
- PrintDebug("VMX is locked -- enable in the BIOS\n");
- return 0;
- }
- } else {
- PrintDebug("VMX not supported on this cpu\n");
- return 0;
- }
-
- return 1;
-
-}
-
-
-VmxOnRegion * Init_VMX() {
- uint_t ret;
- VmxOnRegion * region = NULL;
-
-
- region = CreateVmxOnRegion();
-
-
- ret = Enable_VMX((ullong_t)((uint_t)region));
- if (ret == 0) {
- PrintDebug("VMX Enabled\n");
- } else {
- PrintDebug("VMX failure (ret = %d)\n", ret);
- }
-
- theVM.vmxonregion = region;
-
- return region;
-}
extern uint_t VMCS_CLEAR();
extern uint_t VMCS_LOAD();
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;
-
- PrintTrace("SetCtrlBitsCorrectly(%x,%x)\n", msrno, vmcsno);
- Get_MSR(msrno, &msr.regs.high, &msr.regs.low);
- PrintTrace("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;
-
- PrintTrace("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);
- PrintTrace("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)
-{
- 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;
-}
-
-
-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));
- }
- 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);
-
-
- 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 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;
+ 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)
// 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.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.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.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.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.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.limit = 0xffff;
vm->vmcs.guestStateArea.gs.access.as_dword = 0xf3;
V8086ModeSegmentRegisterFixup(vm);
-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;
-}
-
-
-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;
-
-
-
- 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);
- }
- */
-
- PrintTrace("Returning from Do_VMM: %d\n", ret);
-
- return ret;
-}
-
static void ConfigureExits(struct VM *vm)
{
// 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 ;
+ // 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));
int rc;
ullong_t vmcs_ptr = (ullong_t)((uint_t)vmcs);
- uint_t top = (vmcs_ptr>>32)&0xffffffff;
- uint_t bottom = (vmcs_ptr)&0xffffffff;
+ uint_t top = (vmcs_ptr >> 32) & 0xffffffff;
+ uint_t bottom = (vmcs_ptr) & 0xffffffff;
theVM.vmcsregion = vmcs;
theVM.descriptor = *vm;
PrintTrace("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);
+ rc = MyLaunch(&theVM); // vmcs_ptr, vm->entry_ip, vm->exit_eip, vm->guest_esp);
PrintTrace("Returned from MyLaunch();\n");
return rc;
}
-VmxOnRegion * CreateVmxOnRegion() {
- union VMX_MSR basicMSR;
- VmxOnRegion * region = (VmxOnRegion *)(os_hooks)->allocate_pages(1);
- 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;
+//
+//
+// END CRUFT
+//
+//
+
+
+// For the 32 bit reserved bit fields
+// MB1s are in the low 32 bits, MBZs are in the high 32 bits of the MSR
+static uint32_t sanitize_bits1(uint32_t msr_num, uint32_t val) {
+ v3_msr_t mask_msr;
+
+ PrintDebug("sanitize_bits1 (MSR:%x)\n", msr_num);
+
+ v3_get_msr(msr_num, &mask_msr.hi, &mask_msr.lo);
+
+ PrintDebug("MSR %x = %x : %x \n", msr_num, msr.hi, msr.lo);
+
+ val &= mask_msr.lo;
+ val &= mask_msr.hi;
+
+ return val;
+}
+
+
+static addr_t sanitize_bits2(uint32_t msr_num0, uint32_t msr_num1, addr_t val) {
+ v3_msr_t msr0, msr1;
+ addr_t msr0_val, msr1_val;
+
+ PrintDebug("sanitize_bits2 (MSR0=%x, MSR1=%x)\n", msr_num0, msr_num1);
+
+ v3_get_msr(msr_num0, &msr0.hi, &msr0.lo);
+ v3_get_msr(msr_num1, &msr1.hi, &msr1.lo);
+
+ // This generates a mask that is the natural bit width of the CPU
+ msr0_val = msr0.value;
+ msr1_val = msr1.value;
+
+ PrintDebug("MSR %x = %p, %x = %p \n", msr_num0, msr0_val, msr_num1, msr1_val);
+
+ val &= msr0_val;
+ val &= msr1_val;
+
+ return val;
+}
+
+
+
+static vmcs_t * allocate_vmcs() {
+ reg_ex_t msr;
+ vmcs_t * vmcs_page = (vmcs_t *)V3_VAddr(V3_AllocPages(1));
+
+ memset(vmcb_page, 0, 4096);
+
+ v3_get_msr(VMX_BASIC_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
+
+ *(uint32_t *)vmcs_page = ((struct vmx_basic_msr *)msr.val)->revision;
+
+ return vmcs_page;
+}
+
+
+
+static void init_vmcs_bios(vmcs_t * vmcs, struct guest_info * vm_info) {
+
+}
+
+
+
+static int init_vmx_guest(struct guest_info * info, struct v3_vm_config * config_ptr) {
+ v3_pre_config_guest(info, config_ptr);
+
+ PrintDebug("Allocating VMCS\n");
+ info->vmm_data = (void *)allocate_vmcs();
+
+ PrintDebug("Initializing VMCS (addr=%p)\n", (void *)info->vmm_data);
+ init_vmcs_bios((vmcs_t *)(info->vmm_data), info);
+
+ v3_post_config_guest(info, config_ptr);
+
+ return 0;
+}
+
+
+
+
+static int start_svm_guest(struct guest_info *info) {
+ return -1;
+}
+
+
+
+
+
+
+int v3_is_vmx_capable() {
+ uint_t ret;
+ v3_msr_t feature_msr;
+ addr_t eax = 0, ebx = 0, ecx = 0, edx = 0;
+
+ v3_cpuid(CPUID_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
+
+ if (ecx & CPUID_1_ECX_VTXFLAG) {
+ v3_get_msr(IA32_FEATURE_CONTROL_MSR, &(feature_msr.hi), &(feature_msr.lo));
+
+ PrintTrace("MSRREGlow: 0x%.8x\n", feature_msr.lo);
+
+ if ((feature_msr.lo & FEATURE_CONTROL_VALID) != FEATURE_CONTROL_VALID) {
+ PrintDebug("VMX is locked -- enable in the BIOS\n");
+ return 0;
+ }
+
+ } else {
+ PrintDebug("VMX not supported on this cpu\n");
+ return 0;
+ }
+
+ return 1;
+
+}
+
+static int has_vmx_nested_paging() {
+ return 0;
+}
+
+
+
+// We set up the global host state that is unlikely to change across processes here
+// Segment Descriptors mainly
+
+struct seg_descriptor {
+
+};
+
+
+static int setup_base_host_state() {
+ uint8_t gdt[10];
+
+
+
+ vmwrite(HOST_IDTR_BASE,
- PrintInfo("VMX revision: 0x%lu\n", *(ulong_t *)region);
- return region;
}
-VMCS * CreateVMCS() {
- union VMX_MSR basicMSR;
- VMCS * vmcs = (VMCS *)(os_hooks)->allocate_pages(1);
- Get_MSR(IA32_VMX_BASIC_MSR, &basicMSR.regs.high, &basicMSR.regs.low);
- *(ulong_t *)vmcs = basicMSR.vmxBasic.revision;
- *(ulong_t *)((char*)vmcs + 4) = 0;
- PrintTrace("VMCS Region size: %u\n", basicMSR.vmxBasic.regionSize);
- PrintTrace("VMCS Abort: %x\n",*(uint_t *)(((char*)vmcs)+4));
+void v3_init_vmx(struct v3_ctrl_ops * vm_ops) {
+ v3_msr_t basic_msr;
+
+ // Setup the host state save area
+ void * host_state = V3_AllocPages(1);
+
+ v3_get_msr(VMX_BASIC_MSR, &(basic_msr.hi), &(basic_msr.lo));
+
+ *(uint32_t *)host_state = ((struct vmx_basic_msr *)basic_msr.value)->revision;
+
+ PrintDebug("VMX revision: 0x%p\n", host_state);
+
+ __asm__ __volatile__ (
+ "movl %%cr4, %%ebx; "
+ "orl %%ebx, 0x00002000; "
+ "movl %%ebx, %%cr4"
+ );
+
+
+
+ // Should check and return Error here....
+ __asm__ __volatile__ (
+ "movl %%cr0, %%ebx; "
+ "orl %%ebx, 0x00000020; "
+ "movl %%ebx, %%cr0"
+ );
+
+
+ if (v3_enable_vmx(host_state) == 0) {
+ PrintDebug("VMX Enabled\n");
+ } else {
+ PrintDebug("VMX initialization failure\n");
+ }
+
+
+ if (has_vmx_nested_paging() == 1) {
+ v3_cpu_type = V3_VMX_EPT_CPU;
+ } else {
+ v3_cpu_type = V3_VMX_CPU;
+ }
+
+ // Setup the VMX specific vmm operations
+ vmm_ops->init_guest = &init_vmx_guest;
+ vmm_ops->start_guest = &start_vmx_guest;
+ vmm_ops->has_nested_paging = &has_vmx_nested_paging;
- return vmcs;
}
