#include <palacios/svm_msr.h>
#include <palacios/vmm_rbtree.h>
+#include <palacios/vmm_barrier.h>
+
+#ifdef V3_CONFIG_CHECKPOINT
+#include <palacios/vmm_checkpoint.h>
+#endif
#include <palacios/vmm_direct_paging.h>
#include <palacios/vmm_ctrl_regs.h>
-#include <palacios/vmm_config.h>
#include <palacios/svm_io.h>
+#include <palacios/vmm_sprintf.h>
+
+
+#ifndef V3_CONFIG_DEBUG_SVM
+#undef PrintDebug
+#define PrintDebug(fmt, args...)
+#endif
+
+uint32_t v3_last_exit;
// This is a global pointer to the host's VMCB
-static void * host_vmcb = NULL;
+static addr_t host_vmcbs[V3_CONFIG_MAX_CPUS] = { [0 ... V3_CONFIG_MAX_CPUS - 1] = 0};
+
+
extern void v3_stgi();
extern void v3_clgi();
static vmcb_t * Allocate_VMCB() {
- vmcb_t * vmcb_page = (vmcb_t *)V3_VAddr(V3_AllocPages(1));
+ vmcb_t * vmcb_page = NULL;
+ addr_t vmcb_pa = (addr_t)V3_AllocPages(1);
+
+ if ((void *)vmcb_pa == NULL) {
+ PrintError("Error allocating VMCB\n");
+ return NULL;
+ }
+
+ vmcb_page = (vmcb_t *)V3_VAddr((void *)vmcb_pa);
memset(vmcb_page, 0, 4096);
}
+static int v3_svm_handle_efer_write(struct guest_info * core, uint_t msr, struct v3_msr src, void * priv_data)
+{
+ int status;
-static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
- vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
- vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
- uint_t i;
-
+ // Call arch-independent handler
+ if ((status = v3_handle_efer_write(core, msr, src, priv_data)) != 0) {
+ return status;
+ }
- //
- guest_state->rsp = 0x00;
- guest_state->rip = 0xfff0;
+ // SVM-specific code
+ {
+ // Ensure that hardware visible EFER.SVME bit is set (SVM Enable)
+ struct efer_64 * hw_efer = (struct efer_64 *)&(core->ctrl_regs.efer);
+ hw_efer->svme = 1;
+ }
+ return 0;
+}
- guest_state->cpl = 0;
- guest_state->efer |= EFER_MSR_svm_enable;
+static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info * core) {
+ vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
+ vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
+ uint_t i;
- guest_state->rflags = 0x00000002; // The reserved bit is always 1
+ //
ctrl_area->svm_instrs.VMRUN = 1;
ctrl_area->svm_instrs.VMMCALL = 1;
ctrl_area->svm_instrs.VMLOAD = 1;
ctrl_area->svm_instrs.STGI = 1;
ctrl_area->svm_instrs.CLGI = 1;
ctrl_area->svm_instrs.SKINIT = 1;
- ctrl_area->svm_instrs.RDTSCP = 1;
ctrl_area->svm_instrs.ICEBP = 1;
ctrl_area->svm_instrs.WBINVD = 1;
ctrl_area->svm_instrs.MONITOR = 1;
ctrl_area->svm_instrs.MWAIT_always = 1;
ctrl_area->svm_instrs.MWAIT_if_armed = 1;
ctrl_area->instrs.INVLPGA = 1;
-
+ ctrl_area->instrs.CPUID = 1;
ctrl_area->instrs.HLT = 1;
+
+#ifdef V3_CONFIG_TIME_VIRTUALIZE_TSC
+ ctrl_area->instrs.RDTSC = 1;
+ ctrl_area->svm_instrs.RDTSCP = 1;
+#endif
+
// guest_state->cr0 = 0x00000001; // PE
/*
ctrl_area->instrs.NMI = 1;
- ctrl_area->instrs.SMI = 1;
+ ctrl_area->instrs.SMI = 0; // allow SMIs to run in guest
ctrl_area->instrs.INIT = 1;
ctrl_area->instrs.PAUSE = 1;
ctrl_area->instrs.shutdown_evts = 1;
- vm_info->vm_regs.rdx = 0x00000f00;
- guest_state->cr0 = 0x60000010;
+ /* DEBUG FOR RETURN CODE */
+ ctrl_area->exit_code = 1;
- guest_state->cs.selector = 0xf000;
- guest_state->cs.limit = 0xffff;
- guest_state->cs.base = 0x0000000f0000LL;
- guest_state->cs.attrib.raw = 0xf3;
+ /* Setup Guest Machine state */
+ core->vm_regs.rsp = 0x00;
+ core->rip = 0xfff0;
+
+ core->vm_regs.rdx = 0x00000f00;
+
+
+ core->cpl = 0;
+
+ core->ctrl_regs.rflags = 0x00000002; // The reserved bit is always 1
+ core->ctrl_regs.cr0 = 0x60010010; // Set the WP flag so the memory hooks work in real-mode
+ core->ctrl_regs.efer |= EFER_MSR_svm_enable;
+
+
+
+
+
+ core->segments.cs.selector = 0xf000;
+ core->segments.cs.limit = 0xffff;
+ core->segments.cs.base = 0x0000000f0000LL;
+
+ // (raw attributes = 0xf3)
+ core->segments.cs.type = 0x3;
+ core->segments.cs.system = 0x1;
+ core->segments.cs.dpl = 0x3;
+ core->segments.cs.present = 1;
- /* DEBUG FOR RETURN CODE */
- ctrl_area->exit_code = 1;
- struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds),
- &(guest_state->es), &(guest_state->fs),
- &(guest_state->gs), NULL};
+ struct v3_segment * segregs [] = {&(core->segments.ss), &(core->segments.ds),
+ &(core->segments.es), &(core->segments.fs),
+ &(core->segments.gs), NULL};
for ( i = 0; segregs[i] != NULL; i++) {
- struct vmcb_selector * seg = segregs[i];
+ struct v3_segment * seg = segregs[i];
seg->selector = 0x0000;
// seg->base = seg->selector << 4;
seg->base = 0x00000000;
- seg->attrib.raw = 0xf3;
seg->limit = ~0u;
+
+ // (raw attributes = 0xf3)
+ seg->type = 0x3;
+ seg->system = 0x1;
+ seg->dpl = 0x3;
+ seg->present = 1;
}
- guest_state->gdtr.limit = 0x0000ffff;
- guest_state->gdtr.base = 0x0000000000000000LL;
- guest_state->idtr.limit = 0x0000ffff;
- guest_state->idtr.base = 0x0000000000000000LL;
+ core->segments.gdtr.limit = 0x0000ffff;
+ core->segments.gdtr.base = 0x0000000000000000LL;
+ core->segments.idtr.limit = 0x0000ffff;
+ core->segments.idtr.base = 0x0000000000000000LL;
- guest_state->ldtr.selector = 0x0000;
- guest_state->ldtr.limit = 0x0000ffff;
- guest_state->ldtr.base = 0x0000000000000000LL;
- guest_state->tr.selector = 0x0000;
- guest_state->tr.limit = 0x0000ffff;
- guest_state->tr.base = 0x0000000000000000LL;
+ core->segments.ldtr.selector = 0x0000;
+ core->segments.ldtr.limit = 0x0000ffff;
+ core->segments.ldtr.base = 0x0000000000000000LL;
+ core->segments.tr.selector = 0x0000;
+ core->segments.tr.limit = 0x0000ffff;
+ core->segments.tr.base = 0x0000000000000000LL;
- guest_state->dr6 = 0x00000000ffff0ff0LL;
- guest_state->dr7 = 0x0000000000000400LL;
+ core->dbg_regs.dr6 = 0x00000000ffff0ff0LL;
+ core->dbg_regs.dr7 = 0x0000000000000400LL;
- v3_init_svm_io_map(vm_info);
- ctrl_area->IOPM_BASE_PA = (addr_t)V3_PAddr(vm_info->io_map.arch_data);
+ ctrl_area->IOPM_BASE_PA = (addr_t)V3_PAddr(core->vm_info->io_map.arch_data);
ctrl_area->instrs.IOIO_PROT = 1;
-
-
-
- v3_init_svm_msr_map(vm_info);
- ctrl_area->MSRPM_BASE_PA = (addr_t)V3_PAddr(vm_info->msr_map.arch_data);
- ctrl_area->instrs.MSR_PROT = 1;
-
+
+ ctrl_area->MSRPM_BASE_PA = (addr_t)V3_PAddr(core->vm_info->msr_map.arch_data);
+ ctrl_area->instrs.MSR_PROT = 1;
PrintDebug("Exiting on interrupts\n");
ctrl_area->instrs.INTR = 1;
- if (vm_info->shdw_pg_mode == SHADOW_PAGING) {
+ v3_hook_msr(core->vm_info, EFER_MSR,
+ &v3_handle_efer_read,
+ &v3_svm_handle_efer_write,
+ core);
+
+ if (core->shdw_pg_mode == SHADOW_PAGING) {
PrintDebug("Creating initial shadow page table\n");
/* JRL: This is a performance killer, and a simplistic solution */
ctrl_area->guest_ASID = 1;
- if (v3_init_passthrough_pts(vm_info) == -1) {
+ if (v3_init_passthrough_pts(core) == -1) {
PrintError("Could not initialize passthrough page tables\n");
return ;
}
- vm_info->shdw_pg_state.guest_cr0 = 0x0000000000000010LL;
+ core->shdw_pg_state.guest_cr0 = 0x0000000000000010LL;
PrintDebug("Created\n");
- guest_state->cr3 = vm_info->direct_map_pt;
+ core->ctrl_regs.cr0 |= 0x80000000;
+ core->ctrl_regs.cr3 = core->direct_map_pt;
ctrl_area->cr_reads.cr0 = 1;
ctrl_area->cr_writes.cr0 = 1;
ctrl_area->cr_reads.cr3 = 1;
ctrl_area->cr_writes.cr3 = 1;
- v3_hook_msr(vm_info, EFER_MSR,
- &v3_handle_efer_read,
- &v3_handle_efer_write,
- vm_info);
+
ctrl_area->instrs.INVLPG = 1;
guest_state->g_pat = 0x7040600070406ULL;
- guest_state->cr0 |= 0x80000000;
- } else if (vm_info->shdw_pg_mode == NESTED_PAGING) {
+
+ } else if (core->shdw_pg_mode == NESTED_PAGING) {
// Flush the TLB on entries/exits
ctrl_area->TLB_CONTROL = 1;
ctrl_area->guest_ASID = 1;
PrintDebug("NP_Enable at 0x%p\n", (void *)&(ctrl_area->NP_ENABLE));
// Set the Nested Page Table pointer
- if (v3_init_passthrough_pts(vm_info) == -1) {
+ if (v3_init_passthrough_pts(core) == -1) {
PrintError("Could not initialize Nested page tables\n");
return ;
}
- ctrl_area->N_CR3 = vm_info->direct_map_pt;
+ ctrl_area->N_CR3 = core->direct_map_pt;
guest_state->g_pat = 0x7040600070406ULL;
}
+
+ /* tell the guest that we don't support SVM */
+ v3_hook_msr(core->vm_info, SVM_VM_CR_MSR,
+ &v3_handle_vm_cr_read,
+ &v3_handle_vm_cr_write,
+ core);
+
+
+ {
+ v3_hook_msr(core->vm_info, IA32_STAR_MSR, NULL, NULL, NULL);
+ v3_hook_msr(core->vm_info, IA32_LSTAR_MSR, NULL, NULL, NULL);
+ v3_hook_msr(core->vm_info, IA32_FMASK_MSR, NULL, NULL, NULL);
+ v3_hook_msr(core->vm_info, IA32_KERN_GS_BASE_MSR, NULL, NULL, NULL);
+ v3_hook_msr(core->vm_info, IA32_CSTAR_MSR, NULL, NULL, NULL);
+
+ v3_hook_msr(core->vm_info, SYSENTER_CS_MSR, NULL, NULL, NULL);
+ v3_hook_msr(core->vm_info, SYSENTER_ESP_MSR, NULL, NULL, NULL);
+ v3_hook_msr(core->vm_info, SYSENTER_EIP_MSR, NULL, NULL, NULL);
+ }
}
-static int init_svm_guest(struct guest_info * info, struct v3_vm_config * config_ptr) {
-
-
- v3_pre_config_guest(info, config_ptr);
+int v3_init_svm_vmcb(struct guest_info * core, v3_vm_class_t vm_class) {
PrintDebug("Allocating VMCB\n");
- info->vmm_data = (void*)Allocate_VMCB();
+ core->vmm_data = (void *)Allocate_VMCB();
+
+ if (core->vmm_data == NULL) {
+ PrintError("Could not allocate VMCB, Exiting...\n");
+ return -1;
+ }
- PrintDebug("Initializing VMCB (addr=%p)\n", (void *)info->vmm_data);
- Init_VMCB_BIOS((vmcb_t*)(info->vmm_data), info);
+ if (vm_class == V3_PC_VM) {
+ PrintDebug("Initializing VMCB (addr=%p)\n", (void *)core->vmm_data);
+ Init_VMCB_BIOS((vmcb_t*)(core->vmm_data), core);
+ } else {
+ PrintError("Invalid VM class\n");
+ return -1;
+ }
+
+ return 0;
+}
- v3_post_config_guest(info, config_ptr);
+int v3_deinit_svm_vmcb(struct guest_info * core) {
+ V3_FreePages(V3_PAddr(core->vmm_data), 1);
return 0;
}
-static int start_svm_guest(struct guest_info *info) {
- // vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
- // vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
- uint_t num_exits = 0;
+#ifdef V3_CONFIG_CHECKPOINT
+int v3_svm_save_core(struct guest_info * core, void * ctx){
+ v3_chkpt_save_8(ctx, "cpl", &(core->cpl));
+ v3_chkpt_save(ctx, "vmcb_data", PAGE_SIZE, core->vmm_data);
- PrintDebug("Launching SVM VM (vmcb=%p)\n", (void *)info->vmm_data);
- //PrintDebugVMCB((vmcb_t*)(info->vmm_data));
+ return 0;
+}
+
+int v3_svm_load_core(struct guest_info * core, void * ctx){
- info->run_state = VM_RUNNING;
- rdtscll(info->yield_start_cycle);
+ v3_chkpt_load_8(ctx, "cpl", &(core->cpl));
+ if (v3_chkpt_load(ctx, "vmcb_data", PAGE_SIZE, core->vmm_data) == -1) {
+ return -1;
+ }
- while (1) {
- ullong_t tmp_tsc;
+ return 0;
+}
+#endif
+
+static int update_irq_exit_state(struct guest_info * info) {
+ vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
+
+ // Fix for QEMU bug using EVENTINJ as an internal cache
+ guest_ctrl->EVENTINJ.valid = 0;
+
+ if ((info->intr_core_state.irq_pending == 1) && (guest_ctrl->guest_ctrl.V_IRQ == 0)) {
- // Conditionally yield the CPU if the timeslice has expired
- v3_yield_cond(info);
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
+ PrintDebug("INTAK cycle completed for irq %d\n", info->intr_core_state.irq_vector);
+#endif
+
+ info->intr_core_state.irq_started = 1;
+ info->intr_core_state.irq_pending = 0;
+
+ v3_injecting_intr(info, info->intr_core_state.irq_vector, V3_EXTERNAL_IRQ);
+ }
- /*
- PrintDebug("SVM Entry to CS=%p rip=%p...\n",
- (void *)(addr_t)info->segments.cs.base,
- (void *)(addr_t)info->rip);
- */
+ if ((info->intr_core_state.irq_started == 1) && (guest_ctrl->exit_int_info.valid == 0)) {
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
+ PrintDebug("Interrupt %d taken by guest\n", info->intr_core_state.irq_vector);
+#endif
+
+ // Interrupt was taken fully vectored
+ info->intr_core_state.irq_started = 0;
+
+ } else if ((info->intr_core_state.irq_started == 1) && (guest_ctrl->exit_int_info.valid == 1)) {
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
+ PrintDebug("EXIT INT INFO is set (vec=%d)\n", guest_ctrl->exit_int_info.vector);
+#endif
+ }
+
+ return 0;
+}
- // disable global interrupts for vm state transition
- v3_clgi();
+static int update_irq_entry_state(struct guest_info * info) {
+ vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
- rdtscll(info->time_state.cached_host_tsc);
- // guest_ctrl->TSC_OFFSET = info->time_state.guest_tsc - info->time_state.cached_host_tsc;
+ if (info->intr_core_state.irq_pending == 0) {
+ guest_ctrl->guest_ctrl.V_IRQ = 0;
+ guest_ctrl->guest_ctrl.V_INTR_VECTOR = 0;
+ }
+
+ if (v3_excp_pending(info)) {
+ uint_t excp = v3_get_excp_number(info);
+
+ guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXCEPTION;
- v3_svm_launch((vmcb_t*)V3_PAddr(info->vmm_data), &(info->vm_regs), (vmcb_t *)host_vmcb);
+ if (info->excp_state.excp_error_code_valid) {
+ guest_ctrl->EVENTINJ.error_code = info->excp_state.excp_error_code;
+ guest_ctrl->EVENTINJ.ev = 1;
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
+ PrintDebug("Injecting exception %d with error code %x\n", excp, guest_ctrl->EVENTINJ.error_code);
+#endif
+ }
- rdtscll(tmp_tsc);
+ guest_ctrl->EVENTINJ.vector = excp;
+
+ guest_ctrl->EVENTINJ.valid = 1;
+
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
+ PrintDebug("<%d> Injecting Exception %d (CR2=%p) (EIP=%p)\n",
+ (int)info->num_exits,
+ guest_ctrl->EVENTINJ.vector,
+ (void *)(addr_t)info->ctrl_regs.cr2,
+ (void *)(addr_t)info->rip);
+#endif
+ v3_injecting_excp(info, excp);
+ } else if (info->intr_core_state.irq_started == 1) {
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
+ PrintDebug("IRQ pending from previous injection\n");
+#endif
+ guest_ctrl->guest_ctrl.V_IRQ = 1;
+ guest_ctrl->guest_ctrl.V_INTR_VECTOR = info->intr_core_state.irq_vector;
+ guest_ctrl->guest_ctrl.V_IGN_TPR = 1;
+ guest_ctrl->guest_ctrl.V_INTR_PRIO = 0xf;
+
+ } else {
+ switch (v3_intr_pending(info)) {
+ case V3_EXTERNAL_IRQ: {
+ uint32_t irq = v3_get_intr(info);
+
+ guest_ctrl->guest_ctrl.V_IRQ = 1;
+ guest_ctrl->guest_ctrl.V_INTR_VECTOR = irq;
+ guest_ctrl->guest_ctrl.V_IGN_TPR = 1;
+ guest_ctrl->guest_ctrl.V_INTR_PRIO = 0xf;
+
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
+ PrintDebug("Injecting Interrupt %d (EIP=%p)\n",
+ guest_ctrl->guest_ctrl.V_INTR_VECTOR,
+ (void *)(addr_t)info->rip);
+#endif
+
+ info->intr_core_state.irq_pending = 1;
+ info->intr_core_state.irq_vector = irq;
+
+ break;
+ }
+ case V3_NMI:
+ guest_ctrl->EVENTINJ.type = SVM_INJECTION_NMI;
+ break;
+ case V3_SOFTWARE_INTR:
+ guest_ctrl->EVENTINJ.type = SVM_INJECTION_SOFT_INTR;
+
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
+ PrintDebug("Injecting software interrupt -- type: %d, vector: %d\n",
+ SVM_INJECTION_SOFT_INTR, info->intr_core_state.swintr_vector);
+#endif
+ guest_ctrl->EVENTINJ.vector = info->intr_core_state.swintr_vector;
+ guest_ctrl->EVENTINJ.valid = 1;
+
+ /* reset swintr state */
+ info->intr_core_state.swintr_posted = 0;
+ info->intr_core_state.swintr_vector = 0;
+
+ break;
+ case V3_VIRTUAL_IRQ:
+ guest_ctrl->EVENTINJ.type = SVM_INJECTION_IRQ;
+ break;
+
+ case V3_INVALID_INTR:
+ default:
+ break;
+ }
- //PrintDebug("SVM Returned\n");
+ }
+
+ return 0;
+}
+
+
+/*
+ * CAUTION and DANGER!!!
+ *
+ * The VMCB CANNOT(!!) be accessed outside of the clgi/stgi calls inside this function
+ * When exectuing a symbiotic call, the VMCB 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_svm_enter(struct guest_info * info) {
+ vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
+ vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
+ addr_t exit_code = 0, exit_info1 = 0, exit_info2 = 0;
+ sint64_t tsc_offset;
+
+ // Conditionally yield the CPU if the timeslice has expired
+ v3_yield_cond(info);
+
+ // Perform any additional yielding needed for time adjustment
+ v3_adjust_time(info);
+
+ // disable global interrupts for vm state transition
+ v3_clgi();
+
+ // Update timer devices after being in the VM, with interupts
+ // disabled, but before doing IRQ updates, so that any interrupts they
+ //raise get seen immediately.
+ v3_update_timers(info);
+
+ // Synchronize the guest state to the VMCB
+ guest_state->cr0 = info->ctrl_regs.cr0;
+ guest_state->cr2 = info->ctrl_regs.cr2;
+ guest_state->cr3 = info->ctrl_regs.cr3;
+ guest_state->cr4 = info->ctrl_regs.cr4;
+ guest_state->dr6 = info->dbg_regs.dr6;
+ guest_state->dr7 = info->dbg_regs.dr7;
+ guest_ctrl->guest_ctrl.V_TPR = info->ctrl_regs.cr8 & 0xff;
+ guest_state->rflags = info->ctrl_regs.rflags;
+ guest_state->efer = info->ctrl_regs.efer;
+
+ guest_state->cpl = info->cpl;
+
+ v3_set_vmcb_segments((vmcb_t*)(info->vmm_data), &(info->segments));
+
+ guest_state->rax = info->vm_regs.rax;
+ guest_state->rip = info->rip;
+ guest_state->rsp = info->vm_regs.rsp;
+
+#ifdef V3_CONFIG_SYMCALL
+ if (info->sym_core_state.symcall_state.sym_call_active == 0) {
+ update_irq_entry_state(info);
+ }
+#else
+ update_irq_entry_state(info);
+#endif
- // reenable global interrupts after vm exit
- v3_stgi();
+ /* ** */
+
+ /*
+ PrintDebug("SVM Entry to CS=%p rip=%p...\n",
+ (void *)(addr_t)info->segments.cs.base,
+ (void *)(addr_t)info->rip);
+ */
+
+#ifdef V3_CONFIG_SYMCALL
+ if (info->sym_core_state.symcall_state.sym_call_active == 1) {
+ if (guest_ctrl->guest_ctrl.V_IRQ == 1) {
+ V3_Print("!!! Injecting Interrupt during Sym call !!!\n");
+ }
+ }
+#endif
+
+ v3_time_enter_vm(info);
+ tsc_offset = v3_tsc_host_offset(&info->time_state);
+ guest_ctrl->TSC_OFFSET = tsc_offset;
+
+
+ //V3_Print("Calling v3_svm_launch\n");
+
+ v3_svm_launch((vmcb_t *)V3_PAddr(info->vmm_data), &(info->vm_regs), (vmcb_t *)host_vmcbs[V3_Get_CPU()]);
+
+ //V3_Print("SVM Returned: Exit Code: %x, guest_rip=%lx\n", (uint32_t)(guest_ctrl->exit_code), (unsigned long)guest_state->rip);
+
+ v3_last_exit = (uint32_t)(guest_ctrl->exit_code);
+
+ // Immediate exit from VM time bookkeeping
+ v3_time_exit_vm(info);
- // Conditionally yield the CPU if the timeslice has expired
- v3_yield_cond(info);
+ info->num_exits++;
+ // Save Guest state from VMCB
+ info->rip = guest_state->rip;
+ info->vm_regs.rsp = guest_state->rsp;
+ info->vm_regs.rax = guest_state->rax;
- v3_update_time(info, tmp_tsc - info->time_state.cached_host_tsc);
- num_exits++;
+ info->cpl = guest_state->cpl;
+
+ info->ctrl_regs.cr0 = guest_state->cr0;
+ info->ctrl_regs.cr2 = guest_state->cr2;
+ info->ctrl_regs.cr3 = guest_state->cr3;
+ info->ctrl_regs.cr4 = guest_state->cr4;
+ info->dbg_regs.dr6 = guest_state->dr6;
+ info->dbg_regs.dr7 = guest_state->dr7;
+ info->ctrl_regs.cr8 = guest_ctrl->guest_ctrl.V_TPR;
+ info->ctrl_regs.rflags = guest_state->rflags;
+ info->ctrl_regs.efer = guest_state->efer;
+
+ v3_get_vmcb_segments((vmcb_t*)(info->vmm_data), &(info->segments));
+ info->cpu_mode = v3_get_vm_cpu_mode(info);
+ info->mem_mode = v3_get_vm_mem_mode(info);
+ /* ** */
+
+ // save exit info here
+ exit_code = guest_ctrl->exit_code;
+ exit_info1 = guest_ctrl->exit_info1;
+ exit_info2 = guest_ctrl->exit_info2;
+
+#ifdef V3_CONFIG_SYMCALL
+ if (info->sym_core_state.symcall_state.sym_call_active == 0) {
+ update_irq_exit_state(info);
+ }
+#else
+ update_irq_exit_state(info);
+#endif
+
+ // reenable global interrupts after vm exit
+ v3_stgi();
+
+ // Conditionally yield the CPU if the timeslice has expired
+ v3_yield_cond(info);
+
+ {
+ int ret = v3_handle_svm_exit(info, exit_code, exit_info1, exit_info2);
- if ((num_exits % 5000) == 0) {
- PrintDebug("SVM Exit number %d\n", num_exits);
+ if (ret != 0) {
+ PrintError("Error in SVM exit handler (ret=%d)\n", ret);
+ PrintError(" last Exit was %d (exit code=0x%llx)\n", v3_last_exit, (uint64_t) exit_code);
+ return -1;
+ }
+ }
+
+
+ return 0;
+}
+
+
+int v3_start_svm_guest(struct guest_info * info) {
+ // vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
+ // vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
+
+ PrintDebug("Starting SVM core %u (on logical core %u)\n", info->vcpu_id, info->pcpu_id);
+
+ if (info->vcpu_id == 0) {
+ info->core_run_state = CORE_RUNNING;
+ info->vm_info->run_state = VM_RUNNING;
+ } else {
+ PrintDebug("SVM core %u (on %u): Waiting for core initialization\n", info->vcpu_id, info->pcpu_id);
+
+ while (info->core_run_state == CORE_STOPPED) {
+
+ if (info->vm_info->run_state == VM_STOPPED) {
+ // The VM was stopped before this core was initialized.
+ return 0;
+ }
+
+ v3_yield(info);
+ //PrintDebug("SVM core %u: still waiting for INIT\n", info->vcpu_id);
}
- if (v3_handle_svm_exit(info) != 0) {
+ PrintDebug("SVM core %u(on %u) initialized\n", info->vcpu_id, info->pcpu_id);
+
+ // We'll be paranoid about race conditions here
+ v3_wait_at_barrier(info);
+ }
+
+ PrintDebug("SVM core %u(on %u): I am starting at CS=0x%x (base=0x%p, limit=0x%x), RIP=0x%p\n",
+ info->vcpu_id, info->pcpu_id,
+ info->segments.cs.selector, (void *)(info->segments.cs.base),
+ info->segments.cs.limit, (void *)(info->rip));
+
+
+
+ PrintDebug("SVM core %u: Launching SVM VM (vmcb=%p) (on cpu %u)\n",
+ info->vcpu_id, (void *)info->vmm_data, info->pcpu_id);
+ //PrintDebugVMCB((vmcb_t*)(info->vmm_data));
+
+ v3_start_time(info);
+
+ while (1) {
+
+ if (info->vm_info->run_state == VM_STOPPED) {
+ info->core_run_state = CORE_STOPPED;
+ break;
+ }
+
+ if (v3_svm_enter(info) == -1) {
vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
addr_t host_addr;
addr_t linear_addr = 0;
- info->run_state = VM_ERROR;
+ info->vm_info->run_state = VM_ERROR;
+
+ V3_Print("SVM core %u: SVM ERROR!!\n", info->vcpu_id);
- PrintDebug("SVM ERROR!!\n");
-
v3_print_guest_state(info);
-
- PrintDebug("SVM Exit Code: %p\n", (void *)(addr_t)guest_ctrl->exit_code);
-
- PrintDebug("exit_info1 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info1));
- PrintDebug("exit_info1 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info1)) + 4));
-
- PrintDebug("exit_info2 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info2));
- PrintDebug("exit_info2 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info2)) + 4));
-
+
+ V3_Print("SVM core %u: SVM Exit Code: %p\n", info->vcpu_id, (void *)(addr_t)guest_ctrl->exit_code);
+
+ V3_Print("SVM core %u: exit_info1 low = 0x%.8x\n", info->vcpu_id, *(uint_t*)&(guest_ctrl->exit_info1));
+ V3_Print("SVM core %u: exit_info1 high = 0x%.8x\n", info->vcpu_id, *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info1)) + 4));
+
+ V3_Print("SVM core %u: exit_info2 low = 0x%.8x\n", info->vcpu_id, *(uint_t*)&(guest_ctrl->exit_info2));
+ V3_Print("SVM core %u: exit_info2 high = 0x%.8x\n", info->vcpu_id, *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info2)) + 4));
+
linear_addr = get_addr_linear(info, info->rip, &(info->segments.cs));
-
+
if (info->mem_mode == PHYSICAL_MEM) {
- guest_pa_to_host_va(info, linear_addr, &host_addr);
+ v3_gpa_to_hva(info, linear_addr, &host_addr);
} else if (info->mem_mode == VIRTUAL_MEM) {
- guest_va_to_host_va(info, linear_addr, &host_addr);
+ v3_gva_to_hva(info, linear_addr, &host_addr);
}
+
+ V3_Print("SVM core %u: Host Address of rip = 0x%p\n", info->vcpu_id, (void *)host_addr);
+
+ V3_Print("SVM core %u: Instr (15 bytes) at %p:\n", info->vcpu_id, (void *)host_addr);
+ v3_dump_mem((uint8_t *)host_addr, 15);
+
+ v3_print_stack(info);
- PrintDebug("Host Address of rip = 0x%p\n", (void *)host_addr);
+ break;
+ }
- PrintDebug("Instr (15 bytes) at %p:\n", (void *)host_addr);
- v3_dump_mem((uint8_t *)host_addr, 15);
+ v3_wait_at_barrier(info);
+
+ if (info->vm_info->run_state == VM_STOPPED) {
+ info->core_run_state = CORE_STOPPED;
break;
}
+
+
+
+/*
+ if ((info->num_exits % 50000) == 0) {
+ V3_Print("SVM Exit number %d\n", (uint32_t)info->num_exits);
+ v3_print_guest_state(info);
+ }
+*/
+
}
+
+ // Need to take down the other cores on error...
+
+ return 0;
+}
+
+
+
+
+int v3_reset_svm_vm_core(struct guest_info * core, addr_t rip) {
+ // init vmcb_bios
+
+ // Write the RIP, CS, and descriptor
+ // assume the rest is already good to go
+ //
+ // vector VV -> rip at 0
+ // CS = VV00
+ // This means we start executing at linear address VV000
+ //
+ // So the selector needs to be VV00
+ // and the base needs to be VV000
+ //
+ core->rip = 0;
+ core->segments.cs.selector = rip << 8;
+ core->segments.cs.limit = 0xffff;
+ core->segments.cs.base = rip << 12;
+
return 0;
}
+
/* Checks machine SVM capability */
/* Implemented from: AMD Arch Manual 3, sect 15.4 */
int v3_is_svm_capable() {
- // Dinda
uint_t vm_cr_low = 0, vm_cr_high = 0;
- addr_t eax = 0, ebx = 0, ecx = 0, edx = 0;
+ uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
v3_cpuid(CPUID_EXT_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
- PrintDebug("CPUID_EXT_FEATURE_IDS_ecx=%p\n", (void *)ecx);
+ PrintDebug("CPUID_EXT_FEATURE_IDS_ecx=0x%x\n", ecx);
if ((ecx & CPUID_EXT_FEATURE_IDS_ecx_svm_avail) == 0) {
- PrintDebug("SVM Not Available\n");
+ V3_Print("SVM Not Available\n");
return 0;
} else {
v3_get_msr(SVM_VM_CR_MSR, &vm_cr_high, &vm_cr_low);
PrintDebug("SVM_VM_CR_MSR = 0x%x 0x%x\n", vm_cr_high, vm_cr_low);
if ((vm_cr_low & SVM_VM_CR_MSR_svmdis) == 1) {
- PrintDebug("SVM is available but is disabled.\n");
+ V3_Print("SVM is available but is disabled.\n");
v3_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
- PrintDebug("CPUID_SVM_REV_AND_FEATURE_IDS_edx=%p\n", (void *)edx);
+ PrintDebug("CPUID_SVM_REV_AND_FEATURE_IDS_edx=0x%x\n", edx);
if ((edx & CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml) == 0) {
- PrintDebug("SVM BIOS Disabled, not unlockable\n");
+ V3_Print("SVM BIOS Disabled, not unlockable\n");
} else {
- PrintDebug("SVM is locked with a key\n");
+ V3_Print("SVM is locked with a key\n");
}
return 0;
} else {
- PrintDebug("SVM is available and enabled.\n");
+ V3_Print("SVM is available and enabled.\n");
v3_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
- PrintDebug("CPUID_SVM_REV_AND_FEATURE_IDS_eax=%p\n", (void *)eax);
- PrintDebug("CPUID_SVM_REV_AND_FEATURE_IDS_ebx=%p\n", (void *)ebx);
- PrintDebug("CPUID_SVM_REV_AND_FEATURE_IDS_ecx=%p\n", (void *)ecx);
- PrintDebug("CPUID_SVM_REV_AND_FEATURE_IDS_edx=%p\n", (void *)edx);
-
-
- if ((edx & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 0) {
- PrintDebug("SVM Nested Paging not supported\n");
- } else {
- PrintDebug("SVM Nested Paging supported\n");
- }
+ PrintDebug("CPUID_SVM_REV_AND_FEATURE_IDS_eax=0x%x\n", eax);
+ PrintDebug("CPUID_SVM_REV_AND_FEATURE_IDS_ebx=0x%x\n", ebx);
+ PrintDebug("CPUID_SVM_REV_AND_FEATURE_IDS_ecx=0x%x\n", ecx);
+ PrintDebug("CPUID_SVM_REV_AND_FEATURE_IDS_edx=0x%x\n", edx);
return 1;
}
}
static int has_svm_nested_paging() {
- addr_t eax = 0, ebx = 0, ecx = 0, edx = 0;
-
+ uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
+
v3_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
-
+
//PrintDebug("CPUID_EXT_FEATURE_IDS_edx=0x%x\n", edx);
-
+
if ((edx & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 0) {
- PrintDebug("SVM Nested Paging not supported\n");
+ V3_Print("SVM Nested Paging not supported\n");
return 0;
} else {
- PrintDebug("SVM Nested Paging supported\n");
+ V3_Print("SVM Nested Paging supported\n");
return 1;
}
-}
-
+ }
+
-void v3_init_SVM(struct v3_ctrl_ops * vmm_ops) {
+void v3_init_svm_cpu(int cpu_id) {
reg_ex_t msr;
- extern v3_cpu_arch_t v3_cpu_type;
+ extern v3_cpu_arch_t v3_cpu_types[];
// Enable SVM on the CPU
v3_get_msr(EFER_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
msr.e_reg.low |= EFER_MSR_svm_enable;
v3_set_msr(EFER_MSR, 0, msr.e_reg.low);
- PrintDebug("SVM Enabled\n");
+ V3_Print("SVM Enabled\n");
// Setup the host state save area
- host_vmcb = V3_AllocPages(4);
+ host_vmcbs[cpu_id] = (addr_t)V3_AllocPages(4);
/* 64-BIT-ISSUE */
// msr.e_reg.high = 0;
//msr.e_reg.low = (uint_t)host_vmcb;
- msr.r_reg = (addr_t)host_vmcb;
+ msr.r_reg = host_vmcbs[cpu_id];
- PrintDebug("Host State being saved at %p\n", (void *)(addr_t)host_vmcb);
+ PrintDebug("Host State being saved at %p\n", (void *)host_vmcbs[cpu_id]);
v3_set_msr(SVM_VM_HSAVE_PA_MSR, msr.e_reg.high, msr.e_reg.low);
-
-
if (has_svm_nested_paging() == 1) {
- v3_cpu_type = V3_SVM_REV3_CPU;
+ v3_cpu_types[cpu_id] = V3_SVM_REV3_CPU;
} else {
- v3_cpu_type = V3_SVM_CPU;
+ v3_cpu_types[cpu_id] = V3_SVM_CPU;
}
+}
- // Setup the SVM specific vmm operations
- vmm_ops->init_guest = &init_svm_guest;
- vmm_ops->start_guest = &start_svm_guest;
- vmm_ops->has_nested_paging = &has_svm_nested_paging;
- return;
-}
+void v3_deinit_svm_cpu(int cpu_id) {
+ reg_ex_t msr;
+ extern v3_cpu_arch_t v3_cpu_types[];
+
+ // reset SVM_VM_HSAVE_PA_MSR
+ // Does setting it to NULL disable??
+ msr.r_reg = 0;
+ v3_set_msr(SVM_VM_HSAVE_PA_MSR, msr.e_reg.high, msr.e_reg.low);
+ // Disable SVM?
+ v3_get_msr(EFER_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
+ msr.e_reg.low &= ~EFER_MSR_svm_enable;
+ v3_set_msr(EFER_MSR, 0, msr.e_reg.low);
+
+ v3_cpu_types[cpu_id] = V3_INVALID_CPU;
+
+ V3_FreePages((void *)host_vmcbs[cpu_id], 4);
+
+ V3_Print("Host CPU %d host area freed, and SVM disabled\n", cpu_id);
+ return;
+}
vmsave
"rdtsc ; "
: "=D"(start_hi), "=S"(start_lo), "=a"(end_lo),"=d"(end_hi)
- : "c"(host_vmcb), "0"(0), "1"(0), "2"(0), "3"(0)
+ : "c"(host_vmcb[cpu_id]), "0"(0), "1"(0), "2"(0), "3"(0)
);
start = start_hi;
vmload
"rdtsc ; "
: "=D"(start_hi), "=S"(start_lo), "=a"(end_lo),"=d"(end_hi)
- : "c"(host_vmcb), "0"(0), "1"(0), "2"(0), "3"(0)
+ : "c"(host_vmcb[cpu_id]), "0"(0), "1"(0), "2"(0), "3"(0)
);
start = start_hi;
