#include <palacios/vmx.h>
-#include <palacios/vmcs.h>
#include <palacios/vmm.h>
+#include <palacios/vmx_handler.h>
+#include <palacios/vmcs.h>
#include <palacios/vmx_lowlevel.h>
#include <palacios/vmm_lowlevel.h>
-#include <palacios/vmm_config.h>
-#include <palacios/vmm_ctrl_regs.h>
-
-
-//
-//
-// CRUFT
-//
-//
-
-#if 0
-
-#include <palacios/vmm_util.h>
-#include <palacios/vmm_string.h>
#include <palacios/vmm_ctrl_regs.h>
+#include <palacios/vmm_config.h>
+#include <palacios/vm_guest_mem.h>
+#include <palacios/vmm_direct_paging.h>
+#include <palacios/vmx_io.h>
+#include <palacios/vmx_msr.h>
+static addr_t host_vmcs_ptrs[CONFIG_MAX_CPUS] = { [0 ... CONFIG_MAX_CPUS - 1] = 0};
-extern int Launch_VM(ullong_t vmcsPtr, uint_t eip);
-
-#define NUMPORTS 65536
+extern int v3_vmx_launch(struct v3_gprs * vm_regs, struct guest_info * info, struct v3_ctrl_regs * ctrl_regs);
+extern int v3_vmx_resume(struct v3_gprs * vm_regs, struct guest_info * info, struct v3_ctrl_regs * ctrl_regs);
-#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 int inline check_vmcs_write(vmcs_field_t field, addr_t val) {
+ int ret = 0;
+ ret = vmcs_write(field,val);
+ if (ret != VMX_SUCCESS) {
+ PrintError("VMWRITE error on %s!: %d\n", v3_vmcs_field_to_str(field), ret);
+ return 1;
+ }
-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;
- }
+ return 0;
}
+static int inline check_vmcs_read(vmcs_field_t field, void * val) {
+ int ret = 0;
+ ret = vmcs_read(field, val);
+ if (ret != VMX_SUCCESS) {
+ PrintError("VMREAD error on %s!: %d\n", v3_vmcs_field_to_str(field), ret);
+ }
-#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;
-
-
-
+ return ret;
+}
+#if 0
+// 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;
-extern uint_t VMCS_LAUNCH();
-extern uint_t Init_VMCS_HostState();
-extern uint_t Init_VMCS_GuestState();
+ 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, mask_msr.hi, mask_msr.lo);
+ val |= mask_msr.lo;
+ val |= mask_msr.hi;
+
+ return val;
+}
-extern int Get_CR2();
-extern int vmRunning;
+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;
-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;
+ PrintDebug("MSR %x = %p, %x = %p \n", msr_num0, (void*)msr0_val, msr_num1, (void*)msr1_val);
+ val |= msr0_val;
+ val |= msr1_val;
-
- PrintTrace("DecodeCurrentInstruction: instruction is\n");
- PrintTraceMemDump(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;
- PrintTrace("MOV FROM EAX TO CR0\n");
- } else {
- inst->type=VM_UNKNOWN_INST;
- }
+ return val;
}
-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));
+#endif
- vm->vmcs.exitCtrlFields.exitCtrls |= ACK_IRQ_ON_EXIT;
-
- CopyInVMCSExitCtrlFields(&(vm->vmcs.exitCtrlFields));
+static addr_t allocate_vmcs() {
+ reg_ex_t msr;
+ struct vmcs_data * vmcs_page = NULL;
-/* VMCS_READ(VM_EXIT_CTRLS, &flags); */
-/* flags |= ACK_IRQ_ON_EXIT; */
-/* VMCS_WRITE(VM_EXIT_CTRLS, &flags); */
-}
+ PrintDebug("Allocating page\n");
+ vmcs_page = (struct vmcs_data *)V3_VAddr(V3_AllocPages(1));
+ memset(vmcs_page, 0, 4096);
-extern int RunVMM();
-extern int SAFE_VM_LAUNCH();
+ v3_get_msr(VMX_BASIC_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
+
+ vmcs_page->revision = ((struct vmx_basic_msr*)&msr)->revision;
+ PrintDebug("VMX Revision: 0x%x\n",vmcs_page->revision);
-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;
+ return (addr_t)V3_PAddr((void *)vmcs_page);
+}
- PrintTrace("Guest ESP: 0x%x (%u)\n", guest_esp, guest_esp);
- exit_eip = (uint_t)RunVMM;
- PrintTrace("Clear\n");
- VMCS_CLEAR(vmcs);
- PrintTrace("Load\n");
- VMCS_LOAD(vmcs);
+static int init_vmcs_bios(struct guest_info * info, struct vmx_data * vmx_state) {
+ int vmx_ret = 0;
- PrintTrace("VMCS_LINK_PTR\n");
- VMCS_WRITE(VMCS_LINK_PTR, &f);
- PrintTrace("VMCS_LINK_PTR_HIGH\n");
- VMCS_WRITE(VMCS_LINK_PTR_HIGH, &f);
+ PrintDebug("Loading VMCS\n");
+ vmx_ret = vmcs_load(vmx_state->vmcs_ptr_phys);
-
- 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 */
- PrintTrace("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) {
- PrintTrace("Init Host state: VMCS FAILED WITH ERROR\n");
- } else {
- PrintTrace("Init Host state: Invalid VMCS\n");
+ if (vmx_ret != VMX_SUCCESS) {
+ PrintError("VMPTRLD failed\n");
+ return -1;
}
- return ret;
- }
-
- // PrintTrace("HOST_RIP: %x (%u)\n", exit_eip, exit_eip);
- VMCS_WRITE(HOST_RIP, &exit_eip);
- /* Guest state */
- PrintTrace("Setting up guest state\n");
- PrintTrace("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();
- PrintTrace("InitGuestState returned\n");
-
- if (ret != VMX_SUCCESS) {
- if (ret == VMX_FAIL_VALID) {
- PrintTrace("Init Guest state: VMCS FAILED WITH ERROR\n");
- } else {
- PrintTrace("Init Guest state: Invalid VMCS\n");
- }
- return ret;
- }
- PrintTrace("GUEST_RSP: %x (%u)\n", guest_esp, (uint_t)guest_esp);
- VMCS_WRITE(GUEST_RSP, &guest_esp);
+ /******* Setup Host State **********/
- // tmpReg = 0x4100;
- tmpReg = 0xffffffff;
- if (VMCS_WRITE(EXCEPTION_BITMAP, &tmpReg) != VMX_SUCCESS) {
- PrintInfo("Bitmap error\n");
- }
-
- ConfigureExits(vm);
-
- PrintTrace("VMCS_LAUNCH\n");
+ /* Cache GDTR, IDTR, and TR in host struct */
+ addr_t gdtr_base;
+ struct {
+ uint16_t selector;
+ addr_t base;
+ } __attribute__((packed)) tmp_seg;
+
- vm->state=VM_VMXASSIST_STARTUP;
+ __asm__ __volatile__(
+ "sgdt (%0);"
+ :
+ : "q"(&tmp_seg)
+ : "memory"
+ );
+ gdtr_base = tmp_seg.base;
+ vmx_state->host_state.gdtr.base = gdtr_base;
- vmm_ret = SAFE_VM_LAUNCH();
+ __asm__ __volatile__(
+ "sidt (%0);"
+ :
+ : "q"(&tmp_seg)
+ : "memory"
+ );
+ vmx_state->host_state.idtr.base = tmp_seg.base;
- PrintTrace("VMM error %d\n", vmm_ret);
+ __asm__ __volatile__(
+ "str (%0);"
+ :
+ : "q"(&tmp_seg)
+ : "memory"
+ );
+ vmx_state->host_state.tr.selector = tmp_seg.selector;
- return vmm_ret;
-}
+ /* The GDTR *index* is bits 3-15 of the selector. */
+ struct tss_descriptor * desc = NULL;
+ desc = (struct tss_descriptor *)(gdtr_base + (8 * (tmp_seg.selector >> 3)));
+ tmp_seg.base = ((desc->base1) |
+ (desc->base2 << 16) |
+ (desc->base3 << 24) |
+#ifdef __V3_64BIT__
+ ((uint64_t)desc->base4 << 32)
+#else
+ (0)
+#endif
+ );
+ vmx_state->host_state.tr.base = tmp_seg.base;
-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;
-
- 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);
- PrintTrace("Returned from MyLaunch();\n");
- return rc;
-}
-
+ /********** Setup and VMX Control Fields from MSR ***********/
+ /* Setup IO map */
+ v3_init_vmx_io_map(info);
+ v3_init_vmx_msr_map(info);
-
-//
-//
-// END CRUFT
-//
-//
-
-#endif
-
-static int update_vmcs_host_state(struct guest_info * info) {
- addr_t tmp;
- struct vmx_data * arch_data = (struct vmx_data *)(info->vmm_data);
struct v3_msr tmp_msr;
- __asm__ __volatile__ ( "movq %%cr0, %0; "
- : "=q"(tmp)
- :
- );
- vmcs_write(VMCS_HOST_CR0, tmp);
+ v3_get_msr(VMX_PINBASED_CTLS_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ /* Add external interrupts, NMI exiting, and virtual NMI */
+ vmx_state->pin_ctrls.value = tmp_msr.lo;
+ vmx_state->pin_ctrls.nmi_exit = 1;
+ vmx_state->pin_ctrls.ext_int_exit = 1;
- __asm__ __volatile__ ( "movq %%cr3, %0; "
- : "=q"(tmp)
- :
- );
- vmcs_write(VMCS_HOST_CR3, tmp);
-
-
- __asm__ __volatile__ ( "movq %%cr4, %0; "
- : "=q"(tmp)
- :
- );
- vmcs_write(VMCS_HOST_CR4, tmp);
-
-
-
- vmcs_write(VMCS_HOST_GDTR_BASE, arch_data->host_state.gdtr.base);
- vmcs_write(VMCS_HOST_IDTR_BASE, arch_data->host_state.idtr.base);
- vmcs_write(VMCS_HOST_TR_BASE, arch_data->host_state.tr.base);
+ v3_get_msr(VMX_PROCBASED_CTLS_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
-#define FS_BASE_MSR 0xc0000100
-#define GS_BASE_MSR 0xc0000101
+ vmx_state->pri_proc_ctrls.value = tmp_msr.lo;
+ vmx_state->pri_proc_ctrls.use_io_bitmap = 1;
+ vmx_state->pri_proc_ctrls.hlt_exit = 1;
+ vmx_state->pri_proc_ctrls.invlpg_exit = 1;
+ vmx_state->pri_proc_ctrls.use_msr_bitmap = 1;
+ vmx_state->pri_proc_ctrls.pause_exit = 1;
- // FS.BASE MSR
- v3_get_msr(FS_BASE_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
- vmcs_write(VMCS_HOST_FS_BASE, tmp_msr.value);
+ vmx_ret |= check_vmcs_write(VMCS_IO_BITMAP_A_ADDR, (addr_t)V3_PAddr(info->io_map.arch_data));
+ vmx_ret |= check_vmcs_write(VMCS_IO_BITMAP_B_ADDR,
+ (addr_t)V3_PAddr(info->io_map.arch_data) + PAGE_SIZE_4KB);
- // GS.BASE MSR
- v3_get_msr(GS_BASE_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
- vmcs_write(VMCS_HOST_GS_BASE, tmp_msr.value);
+ vmx_ret |= check_vmcs_write(VMCS_MSR_BITMAP, (addr_t)V3_PAddr(info->msr_map.arch_data));
+ v3_get_msr(VMX_EXIT_CTLS_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ vmx_state->exit_ctrls.value = tmp_msr.lo;
+ vmx_state->exit_ctrls.host_64_on = 1;
+ if ((vmx_state->exit_ctrls.save_efer == 1) || (vmx_state->exit_ctrls.ld_efer == 1)) {
+ vmx_state->ia32e_avail = 1;
+ }
- __asm__ __volatile__ ( "movq %%cs, %0; "
- : "=q"(tmp)
- :
- );
- vmcs_write(VMCS_HOST_CS_SELECTOR, tmp);
+ v3_get_msr(VMX_ENTRY_CTLS_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ vmx_state->entry_ctrls.value = tmp_msr.lo;
- __asm__ __volatile__ ( "movq %%ss, %0; "
- : "=q"(tmp)
- :
- );
- vmcs_write(VMCS_HOST_SS_SELECTOR, tmp);
+ {
+ struct vmx_exception_bitmap excp_bmap;
+ excp_bmap.value = 0;
+
+ excp_bmap.pf = 1;
+
+ vmx_ret |= check_vmcs_write(VMCS_EXCP_BITMAP, excp_bmap.value);
+ }
+ /******* Setup VMXAssist guest state ***********/
- __asm__ __volatile__ ( "movq %%ds, %0; "
- : "=q"(tmp)
- :
- );
- vmcs_write(VMCS_HOST_DS_SELECTOR, tmp);
+ info->rip = 0xd0000;
+ info->vm_regs.rsp = 0x80000;
- __asm__ __volatile__ ( "movq %%es, %0; "
- : "=q"(tmp)
- :
- );
- vmcs_write(VMCS_HOST_ES_SELECTOR, tmp);
+ struct rflags * flags = (struct rflags *)&(info->ctrl_regs.rflags);
+ flags->rsvd1 = 1;
- __asm__ __volatile__ ( "movq %%fs, %0; "
- : "=q"(tmp)
- :
- );
- vmcs_write(VMCS_HOST_FS_SELECTOR, tmp);
+ /* Print Control MSRs */
+ v3_get_msr(VMX_CR0_FIXED0_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ PrintDebug("CR0 MSR: %p\n", (void *)(addr_t)tmp_msr.value);
- __asm__ __volatile__ ( "movq %%gs, %0; "
- : "=q"(tmp)
- :
- );
- vmcs_write(VMCS_HOST_GS_SELECTOR, tmp);
+ v3_get_msr(VMX_CR4_FIXED0_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ PrintDebug("CR4 MSR: %p\n", (void *)(addr_t)tmp_msr.value);
- vmcs_write(VMCS_HOST_TR_SELECTOR, arch_data->host_state.tr.selector);
+#define GUEST_CR0 0x80000031
+#define GUEST_CR4 0x00002000
+ info->ctrl_regs.cr0 = GUEST_CR0;
+ info->ctrl_regs.cr4 = GUEST_CR4;
-#define SYSENTER_CS_MSR 0x00000174
-#define SYSENTER_ESP_MSR 0x00000175
-#define SYSENTER_EIP_MSR 0x00000176
+ ((struct cr0_32 *)&(info->shdw_pg_state.guest_cr0))->pe = 1;
+
+ /* Setup paging */
+ if (info->shdw_pg_mode == SHADOW_PAGING) {
+ PrintDebug("Creating initial shadow page table\n");
- // SYSENTER CS MSR
- v3_get_msr(SYSENTER_CS_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
- vmcs_write(VMCS_HOST_SYSENTER_CS, tmp_msr.value);
+ if (v3_init_passthrough_pts(info) == -1) {
+ PrintError("Could not initialize passthrough page tables\n");
+ return -1;
+ }
+
+#define CR0_PE 0x00000001
+#define CR0_PG 0x80000000
- // SYSENTER_ESP MSR
- v3_get_msr(SYSENTER_ESP_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
- vmcs_write(VMCS_HOST_SYSENTER_ESP, tmp_msr.value);
- // SYSENTER_EIP MSR
- v3_get_msr(SYSENTER_EIP_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
- vmcs_write(VMCS_HOST_SYSENTER_EIP, tmp_msr.value);
+ vmx_ret |= check_vmcs_write(VMCS_CR0_MASK, (CR0_PE | CR0_PG) );
+ vmx_ret |= check_vmcs_write(VMCS_CR4_MASK, CR4_VMXE);
+ info->ctrl_regs.cr3 = info->direct_map_pt;
+ // vmx_state->pinbased_ctrls |= NMI_EXIT;
- return 0;
-}
+ /* Add CR exits */
+ vmx_state->pri_proc_ctrls.cr3_ld_exit = 1;
+ vmx_state->pri_proc_ctrls.cr3_str_exit = 1;
+ }
+ // Setup segment registers
+ {
+ struct v3_segment * seg_reg = (struct v3_segment *)&(info->segments);
+ int i;
+ for (i = 0; i < 10; i++) {
+ seg_reg[i].selector = 3 << 3;
+ seg_reg[i].limit = 0xffff;
+ seg_reg[i].base = 0x0;
+ }
-static addr_t vmxon_ptr_phys;
-extern int v3_vmx_exit_handler();
-extern int v3_vmx_vmlaunch();
+ info->segments.cs.selector = 2<<3;
+ /* Set only the segment registers */
+ for (i = 0; i < 6; i++) {
+ seg_reg[i].limit = 0xfffff;
+ seg_reg[i].granularity = 1;
+ seg_reg[i].type = 3;
+ seg_reg[i].system = 1;
+ seg_reg[i].dpl = 0;
+ seg_reg[i].present = 1;
+ seg_reg[i].db = 1;
+ }
-#if 0
-// 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;
+ info->segments.cs.type = 0xb;
- PrintDebug("sanitize_bits1 (MSR:%x)\n", msr_num);
+ info->segments.ldtr.selector = 0x20;
+ info->segments.ldtr.type = 2;
+ info->segments.ldtr.system = 0;
+ info->segments.ldtr.present = 1;
+ info->segments.ldtr.granularity = 0;
- v3_get_msr(msr_num, &mask_msr.hi, &mask_msr.lo);
+
+ /************* Map in GDT and vmxassist *************/
+
+ uint64_t gdt[] __attribute__ ((aligned(32))) = {
+ 0x0000000000000000ULL, /* 0x00: reserved */
+ 0x0000830000000000ULL, /* 0x08: 32-bit TSS */
+ //0x0000890000000000ULL, /* 0x08: 32-bit TSS */
+ 0x00CF9b000000FFFFULL, /* 0x10: CS 32-bit */
+ 0x00CF93000000FFFFULL, /* 0x18: DS 32-bit */
+ 0x000082000000FFFFULL, /* 0x20: LDTR 32-bit */
+ };
+
+#define VMXASSIST_GDT 0x10000
+ addr_t vmxassist_gdt = 0;
+
+ if (guest_pa_to_host_va(info, VMXASSIST_GDT, &vmxassist_gdt) == -1) {
+ PrintError("Could not find VMXASSIST GDT destination\n");
+ return -1;
+ }
+
+ memcpy((void *)vmxassist_gdt, gdt, sizeof(uint64_t) * 5);
+
+ info->segments.gdtr.base = VMXASSIST_GDT;
+
+#define VMXASSIST_TSS 0x40000
+ uint64_t vmxassist_tss = VMXASSIST_TSS;
+ gdt[0x08 / sizeof(gdt[0])] |=
+ ((vmxassist_tss & 0xFF000000) << (56 - 24)) |
+ ((vmxassist_tss & 0x00FF0000) << (32 - 16)) |
+ ((vmxassist_tss & 0x0000FFFF) << (16)) |
+ (8392 - 1);
+
+ info->segments.tr.selector = 0x08;
+ info->segments.tr.base = vmxassist_tss;
+
+ //info->segments.tr.type = 0x9;
+ info->segments.tr.type = 0x3;
+ info->segments.tr.system = 0;
+ info->segments.tr.present = 1;
+ info->segments.tr.granularity = 0;
+ }
+
+ // setup VMXASSIST
+ {
+#define VMXASSIST_START 0x000d0000
+ extern uint8_t v3_vmxassist_start[];
+ extern uint8_t v3_vmxassist_end[];
+ addr_t vmxassist_dst = 0;
- PrintDebug("MSR %x = %x : %x \n", msr_num, mask_msr.hi, mask_msr.lo);
+ if (guest_pa_to_host_va(info, VMXASSIST_START, &vmxassist_dst) == -1) {
+ PrintError("Could not find VMXASSIST destination\n");
+ return -1;
+ }
- val &= mask_msr.lo;
- val &= mask_msr.hi;
-
- return val;
-}
+ memcpy((void *)vmxassist_dst, v3_vmxassist_start, v3_vmxassist_end - v3_vmxassist_start);
+ }
+ /*** Write all the info to the VMCS ***/
+#define DEBUGCTL_MSR 0x1d9
+ v3_get_msr(DEBUGCTL_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ vmx_ret |= check_vmcs_write(VMCS_GUEST_DBG_CTL, tmp_msr.value);
-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;
+ info->dbg_regs.dr7 = 0x400;
- PrintDebug("sanitize_bits2 (MSR0=%x, MSR1=%x)\n", msr_num0, msr_num1);
+ vmx_ret |= check_vmcs_write(VMCS_LINK_PTR, (addr_t)0xffffffffffffffffULL);
+
- 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;
+ if (v3_update_vmcs_ctrl_fields(info)) {
+ PrintError("Could not write control fields!\n");
+ return -1;
+ }
+
+ if (v3_update_vmcs_host_state(info)) {
+ PrintError("Could not write host state\n");
+ return -1;
+ }
- PrintDebug("MSR %x = %p, %x = %p \n", msr_num0, (void*)msr0_val, msr_num1, (void*)msr1_val);
- val &= msr0_val;
- val &= msr1_val;
+ vmx_state->state = VMXASSIST_DISABLED;
- return val;
+ return 0;
}
-static int setup_base_host_state() {
+int v3_init_vmx_vmcs(struct guest_info * info, v3_vm_class_t vm_class) {
+ struct vmx_data * vmx_state = NULL;
+ int vmx_ret = 0;
+ vmx_state = (struct vmx_data *)V3_Malloc(sizeof(struct vmx_data));
+ PrintDebug("vmx_data pointer: %p\n", (void *)vmx_state);
- // vmwrite(HOST_IDTR_BASE,
+ PrintDebug("Allocating VMCS\n");
+ vmx_state->vmcs_ptr_phys = allocate_vmcs();
+ PrintDebug("VMCS pointer: %p\n", (void *)(vmx_state->vmcs_ptr_phys));
-}
+ info->vmm_data = vmx_state;
+ PrintDebug("Initializing VMCS (addr=%p)\n", info->vmm_data);
+
+ // TODO: Fix vmcs fields so they're 32-bit
-#endif
+ PrintDebug("Clearing VMCS: %p\n", (void *)vmx_state->vmcs_ptr_phys);
+ vmx_ret = vmcs_clear(vmx_state->vmcs_ptr_phys);
-static int inline check_vmcs_write(vmcs_field_t field, addr_t val)
-{
- int ret = 0;
- ret = vmcs_write(field,val);
+ if (vmx_ret != VMX_SUCCESS) {
+ PrintError("VMCLEAR failed\n");
+ return -1;
+ }
- if (ret != VMX_SUCCESS) {
- PrintError("VMWRITE error on %s!: %d\n", v3_vmcs_field_to_str(field), ret);
- return 1;
+ if (vm_class == V3_PC_VM) {
+ PrintDebug("Initializing VMCS\n");
+ init_vmcs_bios(info, vmx_state);
+ } else {
+ PrintError("Invalid VM Class\n");
+ return -1;
}
return 0;
}
+static int update_irq_exit_state(struct guest_info * info) {
+ struct vmx_exit_idt_vec_info idt_vec_info;
-static void inline translate_segment_access(struct v3_segment * v3_seg,
- struct vmcs_segment_access * access)
-{
- access->type = v3_seg->type;
- access->desc_type = v3_seg->system;
- access->dpl = v3_seg->dpl;
- access->present = v3_seg->present;
- access->avail = v3_seg->avail;
- access->long_mode = v3_seg->long_mode;
- access->db = v3_seg->db;
- access->granularity = v3_seg->granularity;
-}
+ check_vmcs_read(VMCS_IDT_VECTOR_INFO, &(idt_vec_info.value));
-static int inline vmcs_write_guest_segments(struct guest_info* info)
-{
- int ret = 0;
- struct vmcs_segment_access access;
+ if ((info->intr_state.irq_started == 1) && (idt_vec_info.valid == 0)) {
+#ifdef CONFIG_DEBUG_INTERRUPTS
+ PrintDebug("Calling v3_injecting_intr\n");
+#endif
+ info->intr_state.irq_started = 0;
+ v3_injecting_intr(info, info->intr_state.irq_vector, V3_EXTERNAL_IRQ);
+ }
- memset(&access, 0, sizeof(access));
+ return 0;
+}
- /* CS Segment */
- translate_segment_access(&(info->segments.cs), &access);
+static int update_irq_entry_state(struct guest_info * info) {
+ struct vmx_exit_idt_vec_info idt_vec_info;
+ struct vmcs_interrupt_state intr_state;
+ struct vmx_data * vmx_info = (struct vmx_data *)(info->vmm_data);
- ret &= check_vmcs_write(VMCS_GUEST_CS_BASE, info->segments.cs.base);
- ret &= check_vmcs_write(VMCS_GUEST_CS_SELECTOR, info->segments.cs.selector);
- ret &= check_vmcs_write(VMCS_GUEST_CS_LIMIT, info->segments.cs.limit);
- ret &= check_vmcs_write(VMCS_GUEST_CS_ACCESS, access.value);
+ check_vmcs_read(VMCS_IDT_VECTOR_INFO, &(idt_vec_info.value));
+ check_vmcs_read(VMCS_GUEST_INT_STATE, &(intr_state));
- /* SS Segment */
- translate_segment_access(&(info->segments.ss), &access);
+ /* Check for pending exceptions to inject */
+ if (v3_excp_pending(info)) {
+ struct vmx_entry_int_info int_info;
+ int_info.value = 0;
- ret &= check_vmcs_write(VMCS_GUEST_SS_BASE, info->segments.ss.base);
- ret &= check_vmcs_write(VMCS_GUEST_SS_SELECTOR, info->segments.ss.selector);
- ret &= check_vmcs_write(VMCS_GUEST_SS_LIMIT, info->segments.ss.limit);
- ret &= check_vmcs_write(VMCS_GUEST_SS_ACCESS, access.value);
+ // In VMX, almost every exception is hardware
+ // Software exceptions are pretty much only for breakpoint or overflow
+ int_info.type = 3;
+ int_info.vector = v3_get_excp_number(info);
- /* DS Segment */
- translate_segment_access(&(info->segments.ds), &access);
+ if (info->excp_state.excp_error_code_valid) {
+ check_vmcs_write(VMCS_ENTRY_EXCP_ERR, info->excp_state.excp_error_code);
+ int_info.error_code = 1;
- ret &= check_vmcs_write(VMCS_GUEST_DS_BASE, info->segments.ds.base);
- ret &= check_vmcs_write(VMCS_GUEST_DS_SELECTOR, info->segments.ds.selector);
- ret &= check_vmcs_write(VMCS_GUEST_DS_LIMIT, info->segments.ds.limit);
- ret &= check_vmcs_write(VMCS_GUEST_DS_ACCESS, access.value);
+#ifdef CONFIG_DEBUG_INTERRUPTS
+ PrintDebug("Injecting exception %d with error code %x\n",
+ int_info.vector, info->excp_state.excp_error_code);
+#endif
+ }
+ int_info.valid = 1;
+#ifdef CONFIG_DEBUG_INTERRUPTS
+ PrintDebug("Injecting exception %d (EIP=%p)\n", int_info.vector, (void *)info->rip);
+#endif
+ check_vmcs_write(VMCS_ENTRY_INT_INFO, int_info.value);
- /* ES Segment */
- translate_segment_access(&(info->segments.es), &access);
+ v3_injecting_excp(info, int_info.vector);
- ret &= check_vmcs_write(VMCS_GUEST_ES_BASE, info->segments.es.base);
- ret &= check_vmcs_write(VMCS_GUEST_ES_SELECTOR, info->segments.es.selector);
- ret &= check_vmcs_write(VMCS_GUEST_ES_LIMIT, info->segments.es.limit);
- ret &= check_vmcs_write(VMCS_GUEST_ES_ACCESS, access.value);
+ } else if ((((struct rflags *)&(info->ctrl_regs.rflags))->intr == 1) &&
+ (intr_state.val == 0)) {
+
+ if ((info->intr_state.irq_started == 1) && (idt_vec_info.valid == 1)) {
- /* FS Segment */
- translate_segment_access(&(info->segments.fs), &access);
+#ifdef CONFIG_DEBUG_INTERRUPTS
+ PrintDebug("IRQ pending from previous injection\n");
+#endif
- ret &= check_vmcs_write(VMCS_GUEST_FS_BASE, info->segments.fs.base);
- ret &= check_vmcs_write(VMCS_GUEST_FS_SELECTOR, info->segments.fs.selector);
- ret &= check_vmcs_write(VMCS_GUEST_FS_LIMIT, info->segments.fs.limit);
- ret &= check_vmcs_write(VMCS_GUEST_FS_ACCESS, access.value);
+ // Copy the IDT vectoring info over to reinject the old interrupt
+ if (idt_vec_info.error_code == 1) {
+ uint32_t err_code = 0;
+
+ check_vmcs_read(VMCS_IDT_VECTOR_ERR, &err_code);
+ check_vmcs_write(VMCS_ENTRY_EXCP_ERR, err_code);
+ }
+
+ idt_vec_info.undef = 0;
+ check_vmcs_write(VMCS_ENTRY_INT_INFO, idt_vec_info.value);
+
+ } else {
+ struct vmx_entry_int_info ent_int;
+ ent_int.value = 0;
+
+ switch (v3_intr_pending(info)) {
+ case V3_EXTERNAL_IRQ: {
+ info->intr_state.irq_vector = v3_get_intr(info);
+ ent_int.vector = info->intr_state.irq_vector;
+ ent_int.type = 0;
+ ent_int.error_code = 0;
+ ent_int.valid = 1;
+
+#ifdef CONFIG_DEBUG_INTERRUPTS
+ PrintDebug("Injecting Interrupt %d at exit %u(EIP=%p)\n",
+ info->intr_state.irq_vector,
+ (uint32_t)info->num_exits,
+ (void *)info->rip);
+#endif
- /* GS Segment */
- translate_segment_access(&(info->segments.gs), &access);
+ check_vmcs_write(VMCS_ENTRY_INT_INFO, ent_int.value);
+ info->intr_state.irq_started = 1;
+
+ break;
+ }
+ case V3_NMI:
+ PrintDebug("Injecting NMI\n");
+
+ ent_int.type = 2;
+ ent_int.vector = 2;
+ ent_int.valid = 1;
+ check_vmcs_write(VMCS_ENTRY_INT_INFO, ent_int.value);
+
+ break;
+ case V3_SOFTWARE_INTR:
+ PrintDebug("Injecting software interrupt\n");
+ ent_int.type = 4;
+
+ ent_int.valid = 1;
+ check_vmcs_write(VMCS_ENTRY_INT_INFO, ent_int.value);
+
+ break;
+ case V3_VIRTUAL_IRQ:
+ // Not sure what to do here, Intel doesn't have virtual IRQs
+ // May be the same as external interrupts/IRQs
+
+ break;
+ case V3_INVALID_INTR:
+ default:
+ break;
+ }
+ }
+ } else if ((v3_intr_pending(info)) && (vmx_info->pri_proc_ctrls.int_wndw_exit == 0)) {
+ // Enable INTR window exiting so we know when IF=1
+ uint32_t instr_len;
- ret &= check_vmcs_write(VMCS_GUEST_GS_BASE, info->segments.gs.base);
- ret &= check_vmcs_write(VMCS_GUEST_GS_SELECTOR, info->segments.gs.selector);
- ret &= check_vmcs_write(VMCS_GUEST_GS_LIMIT, info->segments.gs.limit);
- ret &= check_vmcs_write(VMCS_GUEST_GS_ACCESS, access.value);
+ check_vmcs_read(VMCS_EXIT_INSTR_LEN, &instr_len);
- /* LDTR segment */
- translate_segment_access(&(info->segments.ldtr), &access);
+#ifdef CONFIG_DEBUG_INTERRUPTS
+ PrintDebug("Enabling Interrupt-Window exiting: %d\n", instr_len);
+#endif
- ret &= check_vmcs_write(VMCS_GUEST_LDTR_BASE, info->segments.ldtr.base);
- ret &= check_vmcs_write(VMCS_GUEST_LDTR_SELECTOR, info->segments.ldtr.selector);
- ret &= check_vmcs_write(VMCS_GUEST_LDTR_LIMIT, info->segments.ldtr.limit);
- ret &= check_vmcs_write(VMCS_GUEST_LDTR_ACCESS, access.value);
+ vmx_info->pri_proc_ctrls.int_wndw_exit = 1;
+ check_vmcs_write(VMCS_PROC_CTRLS, vmx_info->pri_proc_ctrls.value);
+ }
- /* TR Segment */
- translate_segment_access(&(info->segments.tr), &access);
- ret &= check_vmcs_write(VMCS_GUEST_TR_BASE, info->segments.tr.base);
- ret &= check_vmcs_write(VMCS_GUEST_TR_SELECTOR, info->segments.ldtr.selector);
- ret &= check_vmcs_write(VMCS_GUEST_TR_LIMIT, info->segments.tr.limit);
- ret &= check_vmcs_write(VMCS_GUEST_TR_ACCESS, access.value);
+ return 0;
+}
- /* GDTR Segment */
- ret &= check_vmcs_write(VMCS_GUEST_GDTR_BASE, info->segments.gdtr.base);
- ret &= check_vmcs_write(VMCS_GUEST_GDTR_LIMIT, info->segments.gdtr.limit);
- /* IDTR Segment*/
- ret &= check_vmcs_write(VMCS_GUEST_IDTR_BASE, info->segments.idtr.base);
- ret &= check_vmcs_write(VMCS_GUEST_IDTR_LIMIT, info->segments.idtr.limit);
+static struct vmx_exit_info exit_log[10];
- return ret;
-}
+static void print_exit_log(struct guest_info * info) {
+ int cnt = info->num_exits % 10;
+ int i = 0;
+
-static void setup_v8086_mode_for_boot(struct guest_info * vm_info)
-{
+ V3_Print("\nExit Log (%d total exits):\n", (uint32_t)info->num_exits);
- ((struct vmx_data *)vm_info->vmm_data)->state = VMXASSIST_V8086_BIOS;
- ((struct rflags *)&(vm_info->ctrl_regs.rflags))->vm = 1;
- ((struct rflags *)&(vm_info->ctrl_regs.rflags))->iopl = 3;
+ for (i = 0; i < 10; i++) {
+ struct vmx_exit_info * tmp = &exit_log[cnt];
-
- vm_info->rip = 0xfff0;
+ V3_Print("%d:\texit_reason = %p\n", i, (void *)(addr_t)tmp->exit_reason);
+ V3_Print("\texit_qual = %p\n", (void *)tmp->exit_qual);
+ V3_Print("\tint_info = %p\n", (void *)(addr_t)tmp->int_info);
+ V3_Print("\tint_err = %p\n", (void *)(addr_t)tmp->int_err);
+ V3_Print("\tinstr_info = %p\n", (void *)(addr_t)tmp->instr_info);
- vm_info->segments.cs.selector = 0xf000;
- vm_info->segments.cs.base = 0xf000 << 4;
- vm_info->segments.cs.limit = 0xffff;
- vm_info->segments.cs.type = 3;
- vm_info->segments.cs.system = 1;
- vm_info->segments.cs.dpl = 3;
- vm_info->segments.cs.present = 1;
- vm_info->segments.cs.granularity = 0;
+ cnt--;
- int i = 0;
- struct v3_segment * seg_ptr = (struct v3_segment *)&(vm_info->segments);
-
- /* Set values for selectors ds through ss */
- for(i = 1; i < 6 ; i++) {
- seg_ptr[i].selector = 0x0000;
- seg_ptr[i].base = 0x00000;
- seg_ptr[i].type = 3;
- seg_ptr[i].system = 1;
- seg_ptr[i].dpl = 3;
- seg_ptr[i].present = 1;
- seg_ptr[i].granularity = 0;
- }
+ if (cnt == -1) {
+ cnt = 9;
+ }
- for(i = 6; i < 10; i++) {
- seg_ptr[i].base = 0x0;
- seg_ptr[i].limit = 0xffff;
}
- vm_info->segments.ldtr.selector = 0x0;
- vm_info->segments.ldtr.type = 2;
- vm_info->segments.ldtr.system = 0;
- vm_info->segments.ldtr.present = 1;
- vm_info->segments.ldtr.granularity = 0;
-
- vm_info->segments.tr.selector = 0x0;
- vm_info->segments.tr.type = 3;
- vm_info->segments.tr.system = 0;
- vm_info->segments.tr.present = 1;
- vm_info->segments.tr.granularity = 0;
}
+/*
+ * CAUTION and DANGER!!!
+ *
+ * The VMCS CANNOT(!!) be accessed outside of the cli/sti calls inside this function
+ * When exectuing a symbiotic call, the VMCS WILL be overwritten, so any dependencies
+ * on its contents will cause things to break. The contents at the time of the exit WILL
+ * change before the exit handler is executed.
+ */
+int v3_vmx_enter(struct guest_info * info) {
+ int ret = 0;
+ uint64_t tmp_tsc = 0;
+ struct vmx_exit_info exit_info;
-static addr_t allocate_vmcs()
-{
- reg_ex_t msr;
- PrintDebug("Allocating page\n");
- struct vmcs_data * vmcs_page = (struct vmcs_data *)V3_VAddr(V3_AllocPages(1));
-
-
- memset(vmcs_page, 0, 4096);
+ // Conditionally yield the CPU if the timeslice has expired
+ v3_yield_cond(info);
- v3_get_msr(VMX_BASIC_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
-
- vmcs_page->revision = ((struct vmx_basic_msr*)&msr)->revision;
- PrintDebug("VMX Revision: 0x%x\n",vmcs_page->revision);
- return (addr_t)V3_PAddr((void *)vmcs_page);
-}
+ // v3_print_guest_state(info);
+ // disable global interrupts for vm state transition
+ v3_disable_ints();
+ v3_vmx_restore_vmcs(info);
-static int init_vmcs_bios(struct guest_info * vm_info)
-{
- setup_v8086_mode_for_boot(vm_info);
+#ifdef CONFIG_SYMBIOTIC
+ if (info->sym_state.sym_call_active == 0) {
+ update_irq_entry_state(info);
+ }
+#else
+ update_irq_entry_state(info);
+#endif
- // TODO: Fix vmcs fields so they're 32-bit
- struct vmx_data * vmx_data = (struct vmx_data *)vm_info->vmm_data;
- int vmx_ret;
- // Have to do a whole lot of flag setting here
- PrintDebug("Clearing VMCS\n");
- vmx_ret = vmcs_clear(vmx_data->vmcs_ptr_phys);
+ rdtscll(info->time_state.cached_host_tsc);
- if (vmx_ret != VMX_SUCCESS) {
- PrintError("VMCLEAR failed\n");
- return -1;
+ if (info->run_state == VM_STOPPED) {
+ info->run_state = VM_RUNNING;
+ ret = v3_vmx_launch(&(info->vm_regs), info, &(info->ctrl_regs));
+ } else {
+ ret = v3_vmx_resume(&(info->vm_regs), info, &(info->ctrl_regs));
}
- PrintDebug("Loading VMCS\n");
- vmx_ret = vmcs_load(vmx_data->vmcs_ptr_phys);
+ // PrintDebug("VMX Exit: ret=%d\n", ret);
- if (vmx_ret != VMX_SUCCESS) {
- PrintError("VMPTRLD failed\n");
- return -1;
- }
+ if (ret != VMX_SUCCESS) {
+ uint32_t error = 0;
- struct v3_msr tmp_msr;
+ vmcs_read(VMCS_INSTR_ERR, &error);
+ PrintError("VMENTRY Error: %d\n", error);
- /* Write VMX Control Fields */
- v3_get_msr(VMX_PINBASED_CTLS_MSR,&(tmp_msr.hi),&(tmp_msr.lo));
- vmcs_write(VMCS_PIN_CTRLS, tmp_msr.lo);
+ return -1;
+ }
- v3_get_msr(VMX_PROCBASED_CTLS_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
- vmcs_write(VMCS_PROC_CTRLS, tmp_msr.lo);
+ rdtscll(tmp_tsc);
- v3_get_msr(VMX_EXIT_CTLS_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
- vmcs_write(VMCS_EXIT_CTRLS, tmp_msr.lo);
+ info->num_exits++;
- v3_get_msr(VMX_ENTRY_CTLS_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
- vmcs_write(VMCS_ENTRY_CTRLS, tmp_msr.lo);
+ v3_update_time(info, tmp_tsc - info->time_state.cached_host_tsc);
- /* Cache GDTR, IDTR, and TR in host struct */
- struct {
- uint16_t selector;
- addr_t base;
- } __attribute__((packed)) tmp_seg;
-
- addr_t gdtr_base;
+ /* Update guest state */
+ v3_vmx_save_vmcs(info);
- __asm__ __volatile__(
- "sgdt (%0);"
- :
- : "q"(&tmp_seg)
- : "memory"
- );
- vmx_data->host_state.gdtr.base = gdtr_base = tmp_seg.base;
+ info->mem_mode = v3_get_vm_mem_mode(info);
+ info->cpu_mode = v3_get_vm_cpu_mode(info);
- __asm__ __volatile__(
- "sidt (%0);"
- :
- : "q"(&tmp_seg)
- : "memory"
- );
- vmx_data->host_state.idtr.base = tmp_seg.base;
- __asm__ __volatile__(
- "str (%0);"
- :
- : "q"(&tmp_seg)
- : "memory"
- );
- vmx_data->host_state.tr.selector = tmp_seg.selector;
+ check_vmcs_read(VMCS_EXIT_INSTR_LEN, &(exit_info.instr_len));
+ check_vmcs_read(VMCS_EXIT_INSTR_INFO, &(exit_info.instr_info));
+ check_vmcs_read(VMCS_EXIT_REASON, &(exit_info.exit_reason));
+ check_vmcs_read(VMCS_EXIT_QUAL, &(exit_info.exit_qual));
+ check_vmcs_read(VMCS_EXIT_INT_INFO, &(exit_info.int_info));
+ check_vmcs_read(VMCS_EXIT_INT_ERR, &(exit_info.int_err));
+ check_vmcs_read(VMCS_GUEST_LINEAR_ADDR, &(exit_info.guest_linear_addr));
- struct tss_descriptor desc = ((struct tss_descriptor *)gdtr_base)[tmp_seg.selector];
-
- tmp_seg.base = (
- (desc.base1) |
- (desc.base2 << 16) |
- (desc.base3 << 24) |
-#ifdef __V3_64BIT__
- ((uint64_t)desc.base4 << 32)
-#else
- (0)
-#endif
- );
+ //PrintDebug("VMX Exit taken, id-qual: %u-%lu\n", exit_info.exit_reason, exit_info.exit_qual);
- vmx_data->host_state.tr.base = tmp_seg.base;
+ exit_log[info->num_exits % 10] = exit_info;
- update_vmcs_host_state(vm_info);
- vmcs_write(VMCS_HOST_RIP, (addr_t)&v3_vmx_exit_handler);
- // Setup guest state
- // TODO: This is not 32-bit safe!
- vmx_ret &= check_vmcs_write(VMCS_GUEST_RIP, vm_info->rip);
- vmx_ret &= check_vmcs_write(VMCS_GUEST_CR0, 0x60000010);
+#ifdef CONFIG_SYMBIOTIC
+ if (info->sym_state.sym_call_active == 0) {
+ update_irq_exit_state(info);
+ }
+#else
+ update_irq_exit_state(info);
+#endif
- vmx_ret &= vmcs_write_guest_segments(vm_info);
+ // reenable global interrupts after vm exit
+ v3_enable_ints();
- vmx_ret &= check_vmcs_write(VMCS_GUEST_RFLAGS, vm_info->ctrl_regs.rflags);
- vmx_ret &= check_vmcs_write(VMCS_LINK_PTR, 0xffffffffffffffff);
+ // Conditionally yield the CPU if the timeslice has expired
+ v3_yield_cond(info);
- if (vmx_ret != 0) {
- PrintError("Could not initialize VMCS segments\n");
- return -1;
+ if (v3_handle_vmx_exit(info, &exit_info) == -1) {
+ PrintError("Error in VMX exit handler\n");
+ return -1;
}
- v3_print_vmcs_guest_state();
- return 0;
-}
-
-int v3_vmx_handle_exit()
-{
- PrintDebug("Exit taken!\n");
return 0;
}
-static int init_vmx_guest(struct guest_info * info, struct v3_vm_config * config_ptr) {
- PrintDebug("Entering init_vmx_guest\n");
- v3_pre_config_guest(info, config_ptr);
- struct vmx_data * data = NULL;
+int v3_start_vmx_guest(struct guest_info* info) {
- data = (struct vmx_data *)V3_Malloc(sizeof(struct vmx_data));
- PrintDebug("vmx_data pointer: %p\n", (void *)data);
+ PrintDebug("Launching VMX guest\n");
- PrintDebug("Allocating VMCS\n");
- data->vmcs_ptr_phys = allocate_vmcs();
+ rdtscll(info->time_state.cached_host_tsc);
- PrintDebug("VMCS pointer: %p\n", (void *)(data->vmcs_ptr_phys));
- info->vmm_data = data;
+ while (1) {
+ if (v3_vmx_enter(info) == -1) {
+ v3_print_vmcs();
+ print_exit_log(info);
+ return -1;
+ }
- PrintDebug("Initializing VMCS (addr=%p)\n", info->vmm_data);
+/*
+ if ((info->num_exits % 5000) == 0) {
+ V3_Print("VMX Exit number %d\n", (uint32_t)info->num_exits);
+ }
+*/
- if (init_vmcs_bios(info) != 0) {
- PrintError("Could not initialize VMCS BIOS\n");
- return -1;
}
- //v3_post_config_guest(info, config_ptr);
-
return 0;
}
-static int start_vmx_guest(struct guest_info* info) {
- uint32_t error = 0;
- int ret = 0;
-
- PrintDebug("Attempting VMLAUNCH\n");
-
- ret = v3_vmx_vmlaunch();
-
- PrintDebug("Returned from VMLAUNCH\n");
-
- vmcs_read(VMCS_INSTR_ERR, &error, 4);
-
- if (ret != VMX_SUCCESS) {
- PrintError("VMLAUNCH failed: %d\n", error);
- }
-
- return -1;
-}
-
-
-
-
-
-
int v3_is_vmx_capable() {
v3_msr_t feature_msr;
- addr_t eax = 0, ebx = 0, ecx = 0, edx = 0;
+ uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
v3_cpuid(0x1, &eax, &ebx, &ecx, &edx);
- PrintDebug("ECX: %p\n", (void*)ecx);
+ PrintDebug("ECX: 0x%x\n", ecx);
if (ecx & CPUID_1_ECX_VTXFLAG) {
v3_get_msr(VMX_FEATURE_CONTROL_MSR, &(feature_msr.hi), &(feature_msr.lo));
- PrintTrace("MSRREGlow: 0x%.8x\n", feature_msr.lo);
+ PrintDebug("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");
-void v3_init_vmx(struct v3_ctrl_ops * vm_ops) {
- extern v3_cpu_arch_t v3_cpu_type;
-
+void v3_init_vmx_cpu(int cpu_id) {
+ extern v3_cpu_arch_t v3_cpu_types[];
struct v3_msr tmp_msr;
- uint64_t ret=0;
+ uint64_t ret = 0;
v3_get_msr(VMX_CR4_FIXED0_MSR,&(tmp_msr.hi),&(tmp_msr.lo));
: "%rbx"
);
- if((~ret & tmp_msr.value) == 0) {
+ if ((~ret & tmp_msr.value) == 0) {
__asm__ __volatile__ (
"movq %0, %%cr4;"
:
PrintError("Invalid CR4 Settings!\n");
return;
}
- __asm__ __volatile__ (
- "movq %%cr0, %%rbx; "
- "orq $0x00000020,%%rbx; "
- "movq %%rbx, %%cr0;"
- :
- :
- : "%rbx"
- );
- //
+
+ __asm__ __volatile__ (
+ "movq %%cr0, %%rbx; "
+ "orq $0x00000020,%%rbx; "
+ "movq %%rbx, %%cr0;"
+ :
+ :
+ : "%rbx"
+ );
+ //
// Should check and return Error here....
+
// Setup VMXON Region
- vmxon_ptr_phys = allocate_vmcs();
- PrintDebug("VMXON pointer: 0x%p\n", (void*)vmxon_ptr_phys);
+ host_vmcs_ptrs[cpu_id] = allocate_vmcs();
+
+ PrintDebug("VMXON pointer: 0x%p\n", (void *)host_vmcs_ptrs[cpu_id]);
- if (v3_enable_vmx(vmxon_ptr_phys) == VMX_SUCCESS) {
+ if (v3_enable_vmx(host_vmcs_ptrs[cpu_id]) == VMX_SUCCESS) {
PrintDebug("VMX Enabled\n");
} else {
PrintError("VMX initialization failure\n");
return;
}
-
+
if (has_vmx_nested_paging() == 1) {
- v3_cpu_type = V3_VMX_EPT_CPU;
+ v3_cpu_types[cpu_id] = V3_VMX_EPT_CPU;
} else {
- v3_cpu_type = V3_VMX_CPU;
+ v3_cpu_types[cpu_id] = V3_VMX_CPU;
}
- // Setup the VMX specific vmm operations
- vm_ops->init_guest = &init_vmx_guest;
- vm_ops->start_guest = &start_vmx_guest;
- vm_ops->has_nested_paging = &has_vmx_nested_paging;
-
}
+
