+/*
+ * This file is part of the Palacios Virtual Machine Monitor developed
+ * by the V3VEE Project with funding from the United States National
+ * Science Foundation and the Department of Energy.
+ *
+ * The V3VEE Project is a joint project between Northwestern University
+ * and the University of New Mexico. You can find out more at
+ * http://www.v3vee.org
+ *
+ * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
+ * All rights reserved.
+ *
+ * Author: Jack Lange <jarusl@cs.northwestern.edu>
+ *
+ * This is free software. You are permitted to use,
+ * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
+ */
+
+
+
#include <palacios/svm.h>
#include <palacios/vmm.h>
#include <palacios/vmm_debug.h>
#include <palacios/vm_guest_mem.h>
-#include <palacios/vmm_emulate.h>
+#include <palacios/vmm_decoder.h>
+#include <palacios/vmm_string.h>
+#include <palacios/vmm_lowlevel.h>
+#include <palacios/svm_msr.h>
+#include <palacios/vmm_rbtree.h>
+#include <palacios/vmm_barrier.h>
+#include <palacios/vmm_debug.h>
-extern struct vmm_os_hooks * os_hooks;
-extern uint_t cpuid_ecx(uint_t op);
-extern uint_t cpuid_edx(uint_t op);
-extern void Get_MSR(uint_t MSR, uint_t * high_byte, uint_t * low_byte);
-extern void Set_MSR(uint_t MSR, uint_t high_byte, uint_t low_byte);
-extern uint_t launch_svm(vmcb_t * vmcb_addr);
-extern void safe_svm_launch(vmcb_t * vmcb_addr, struct v3_gprs * gprs);
-extern void STGI();
-extern void CLGI();
+#ifdef V3_CONFIG_CHECKPOINT
+#include <palacios/vmm_checkpoint.h>
+#endif
-extern uint_t Get_CR3();
+#include <palacios/vmm_direct_paging.h>
+#include <palacios/vmm_ctrl_regs.h>
+#include <palacios/svm_io.h>
-extern void DisableInts();
+#include <palacios/vmm_sprintf.h>
-/* Checks machine SVM capability */
-/* Implemented from: AMD Arch Manual 3, sect 15.4 */
-int is_svm_capable() {
- uint_t ret = cpuid_ecx(CPUID_FEATURE_IDS);
- uint_t vm_cr_low = 0, vm_cr_high = 0;
+#ifndef V3_CONFIG_DEBUG_SVM
+#undef PrintDebug
+#define PrintDebug(fmt, args...)
+#endif
- if ((ret & CPUID_FEATURE_IDS_ecx_svm_avail) == 0) {
- PrintDebug("SVM Not Available\n");
- return 0;
- }
- Get_MSR(SVM_VM_CR_MSR, &vm_cr_high, &vm_cr_low);
+uint32_t v3_last_exit;
- if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 1) {
- PrintDebug("Nested Paging not supported\n");
- }
+// This is a global pointer to the host's VMCB
+static addr_t host_vmcbs[V3_CONFIG_MAX_CPUS] = { [0 ... V3_CONFIG_MAX_CPUS - 1] = 0};
- if ((vm_cr_low & SVM_VM_CR_MSR_svmdis) == 0) {
- return 1;
- }
- ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS);
- if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml) == 0) {
- PrintDebug("SVM BIOS Disabled, not unlockable\n");
- } else {
- PrintDebug("SVM is locked with a key\n");
- }
+extern void v3_stgi();
+extern void v3_clgi();
+//extern int v3_svm_launch(vmcb_t * vmcb, struct v3_gprs * vm_regs, uint64_t * fs, uint64_t * gs);
+extern int v3_svm_launch(vmcb_t * vmcb, struct v3_gprs * vm_regs, vmcb_t * host_vmcb);
- return 0;
+
+static vmcb_t * Allocate_VMCB() {
+ vmcb_t * vmcb_page = NULL;
+ addr_t vmcb_pa = (addr_t)V3_AllocPages(1);
+
+ if ((void *)vmcb_pa == NULL) {
+ PrintError(VM_NONE, VCORE_NONE, "Error allocating VMCB\n");
+ return NULL;
+ }
+
+ vmcb_page = (vmcb_t *)V3_VAddr((void *)vmcb_pa);
+
+ memset(vmcb_page, 0, 4096);
+
+ return vmcb_page;
}
+static int v3_svm_handle_efer_write(struct guest_info * core, uint_t msr, struct v3_msr src, void * priv_data)
+{
+ int status;
-void Init_SVM(struct vmm_ctrl_ops * vmm_ops) {
- reg_ex_t msr;
- void * host_state;
+ // Call arch-independent handler
+ if ((status = v3_handle_efer_write(core, msr, src, priv_data)) != 0) {
+ return status;
+ }
+ // 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;
+ }
- // Enable SVM on the CPU
- Get_MSR(EFER_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
- msr.e_reg.low |= EFER_MSR_svm_enable;
- Set_MSR(EFER_MSR, 0, msr.e_reg.low);
-
- PrintDebug("SVM Enabled\n");
+ return 0;
+}
+
+
+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;
+
+
+ //
+ ctrl_area->svm_instrs.VMRUN = 1;
+ ctrl_area->svm_instrs.VMMCALL = 1;
+ ctrl_area->svm_instrs.VMLOAD = 1;
+ ctrl_area->svm_instrs.VMSAVE = 1;
+ ctrl_area->svm_instrs.STGI = 1;
+ ctrl_area->svm_instrs.CLGI = 1;
+ ctrl_area->svm_instrs.SKINIT = 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;
+ /* Set at VMM launch as needed */
+ ctrl_area->instrs.RDTSC = 0;
+ ctrl_area->svm_instrs.RDTSCP = 0;
- // Setup the host state save area
- host_state = os_hooks->allocate_pages(4);
+ // guest_state->cr0 = 0x00000001; // PE
- msr.e_reg.high = 0;
- msr.e_reg.low = (uint_t)host_state;
+ /*
+ ctrl_area->exceptions.de = 1;
+ ctrl_area->exceptions.df = 1;
+
+ ctrl_area->exceptions.ts = 1;
+ ctrl_area->exceptions.ss = 1;
+ ctrl_area->exceptions.ac = 1;
+ ctrl_area->exceptions.mc = 1;
+ ctrl_area->exceptions.gp = 1;
+ ctrl_area->exceptions.ud = 1;
+ ctrl_area->exceptions.np = 1;
+ ctrl_area->exceptions.of = 1;
+
+ ctrl_area->exceptions.nmi = 1;
+ */
+
+ ctrl_area->instrs.NMI = 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;
- PrintDebug("Host State being saved at %x\n", (uint_t)host_state);
- Set_MSR(SVM_VM_HSAVE_PA_MSR, msr.e_reg.high, msr.e_reg.low);
+ /* DEBUG FOR RETURN CODE */
+ ctrl_area->exit_code = 1;
- // Setup the SVM specific vmm operations
- vmm_ops->init_guest = &init_svm_guest;
- vmm_ops->start_guest = &start_svm_guest;
+ /* Setup Guest Machine state */
+ core->vm_regs.rsp = 0x00;
+ core->rip = 0xfff0;
- return;
-}
+ core->vm_regs.rdx = 0x00000f00;
-int init_svm_guest(struct guest_info *info) {
-
- PrintDebug("Allocating VMCB\n");
- info->vmm_data = (void*)Allocate_VMCB();
+ 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;
- //PrintDebug("Generating Guest nested page tables\n");
- // info->page_tables = NULL;
- //info->page_tables = generate_guest_page_tables_64(&(info->mem_layout), &(info->mem_list));
- //info->page_tables = generate_guest_page_tables(&(info->mem_layout), &(info->mem_list));
- // PrintDebugPageTables(info->page_tables);
- PrintDebug("Initializing VMCB (addr=%x)\n", info->vmm_data);
- Init_VMCB_BIOS((vmcb_t*)(info->vmm_data), *info);
-
- // info->rip = 0;
- info->vm_regs.rdi = 0;
- info->vm_regs.rsi = 0;
- info->vm_regs.rbp = 0;
- info->vm_regs.rsp = 0;
- info->vm_regs.rbx = 0;
- info->vm_regs.rdx = 0;
- info->vm_regs.rcx = 0;
- info->vm_regs.rax = 0;
-
- return 0;
-}
+ 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;
+
-// can we start a kernel thread here...
-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));
+ struct v3_segment * segregs [] = {&(core->segments.ss), &(core->segments.ds),
+ &(core->segments.es), &(core->segments.fs),
+ &(core->segments.gs), NULL};
- PrintDebug("Launching SVM VM (vmcb=%x)\n", info->vmm_data);
- //PrintDebugVMCB((vmcb_t*)(info->vmm_data));
+ for ( i = 0; segregs[i] != NULL; i++) {
+ struct v3_segment * seg = segregs[i];
+
+ seg->selector = 0x0000;
+ // seg->base = seg->selector << 4;
+ seg->base = 0x00000000;
+ seg->limit = ~0u;
+
+ // (raw attributes = 0xf3)
+ seg->type = 0x3;
+ seg->system = 0x1;
+ seg->dpl = 0x3;
+ seg->present = 1;
+ }
+
+ core->segments.gdtr.limit = 0x0000ffff;
+ core->segments.gdtr.base = 0x0000000000000000LL;
+ core->segments.idtr.limit = 0x0000ffff;
+ core->segments.idtr.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;
- while (1) {
- ullong_t tmp_tsc;
- CLGI();
+ core->dbg_regs.dr6 = 0x00000000ffff0ff0LL;
+ core->dbg_regs.dr7 = 0x0000000000000400LL;
+
+
+ ctrl_area->IOPM_BASE_PA = (addr_t)V3_PAddr(core->vm_info->io_map.arch_data);
+ ctrl_area->instrs.IOIO_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(core->vm_info, core, "Exiting on interrupts\n");
+ ctrl_area->guest_ctrl.V_INTR_MASKING = 1;
+ ctrl_area->instrs.INTR = 1;
+ // The above also assures the TPR changes (CR8) are only virtual
+
+
+ // However, we need to see TPR writes since they will
+ // affect the virtual apic
+ // we reflect out cr8 to ctrl_regs->apic_tpr
+ ctrl_area->cr_reads.cr8 = 1;
+ ctrl_area->cr_writes.cr8 = 1;
+ // We will do all TPR comparisons in the virtual apic
+ // We also do not want the V_TPR to be able to mask the PIC
+ ctrl_area->guest_ctrl.V_IGN_TPR = 1;
- rdtscll(info->time_state.cached_host_tsc);
- guest_ctrl->TSC_OFFSET = info->time_state.guest_tsc - info->time_state.cached_host_tsc;
- //PrintDebug("SVM Launch Args (vmcb=%x), (info=%x), (vm_regs=%x)\n", info->vmm_data, &(info->vm_regs));
- //PrintDebug("Launching to RIP: %x\n", info->rip);
- safe_svm_launch((vmcb_t*)(info->vmm_data), &(info->vm_regs));
- //launch_svm((vmcb_t*)(info->vmm_data));
- //PrintDebug("SVM Returned\n");
- rdtscll(tmp_tsc);
- info->time_state.guest_tsc += tmp_tsc - info->time_state.cached_host_tsc;
- STGI();
+ 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(core->vm_info, core, "Creating initial shadow page table\n");
+
+ /* JRL: This is a performance killer, and a simplistic solution */
+ /* We need to fix this */
+ ctrl_area->TLB_CONTROL = 1;
+ ctrl_area->guest_ASID = 1;
+
+
+ if (v3_init_passthrough_pts(core) == -1) {
+ PrintError(core->vm_info, core, "Could not initialize passthrough page tables\n");
+ return ;
+ }
+
-
- if (handle_svm_exit(info) != 0) {
+ core->shdw_pg_state.guest_cr0 = 0x0000000000000010LL;
+ PrintDebug(core->vm_info, core, "Created\n");
+
+ core->ctrl_regs.cr0 |= 0x80000000;
+ core->ctrl_regs.cr3 = core->direct_map_pt;
- addr_t host_addr;
- addr_t linear_addr = 0;
+ ctrl_area->cr_reads.cr0 = 1;
+ ctrl_area->cr_writes.cr0 = 1;
+ //ctrl_area->cr_reads.cr4 = 1;
+ ctrl_area->cr_writes.cr4 = 1;
+ ctrl_area->cr_reads.cr3 = 1;
+ ctrl_area->cr_writes.cr3 = 1;
- PrintDebug("SVM ERROR!!\n");
-
- PrintDebug("RIP: %x\n", guest_state->rip);
+ ctrl_area->instrs.INVLPG = 1;
+
+ ctrl_area->exceptions.pf = 1;
+ guest_state->g_pat = 0x7040600070406ULL;
- linear_addr = get_addr_linear(info, guest_state->rip, &(info->segments.cs));
+ } 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("RIP Linear: %x\n", linear_addr);
+ // Enable Nested Paging
+ ctrl_area->NP_ENABLE = 1;
- guest_pa_to_host_pa(info, linear_addr, &host_addr);
+ PrintDebug(core->vm_info, core, "NP_Enable at 0x%p\n", (void *)&(ctrl_area->NP_ENABLE));
- PrintDebug("Host Address of rip = 0x%x\n", host_addr);
+ // Set the Nested Page Table pointer
+ if (v3_init_passthrough_pts(core) == -1) {
+ PrintError(core->vm_info, core, "Could not initialize Nested page tables\n");
+ return ;
+ }
- PrintDebug("Instr (15 bytes) at %x:\n", host_addr);
- PrintTraceMemDump((char*)host_addr, 15);
+ ctrl_area->N_CR3 = core->direct_map_pt;
- break;
+ guest_state->g_pat = 0x7040600070406ULL;
}
- }
- return 0;
-}
+
+ /* 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);
+ {
+#define INT_PENDING_AMD_MSR 0xc0010055
-vmcb_t * Allocate_VMCB() {
- vmcb_t * vmcb_page = (vmcb_t*)os_hooks->allocate_pages(1);
+ 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);
- memset(vmcb_page, 0, 4096);
- return vmcb_page;
+ v3_hook_msr(core->vm_info, FS_BASE_MSR, NULL, NULL, NULL);
+ v3_hook_msr(core->vm_info, GS_BASE_MSR, NULL, NULL, NULL);
+
+ // Passthrough read operations are ok.
+ v3_hook_msr(core->vm_info, INT_PENDING_AMD_MSR, NULL, v3_msr_unhandled_write, NULL);
+ }
}
+int v3_init_svm_vmcb(struct guest_info * core, v3_vm_class_t vm_class) {
-void Init_VMCB(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;
+ PrintDebug(core->vm_info, core, "Allocating VMCB\n");
+ core->vmm_data = (void *)Allocate_VMCB();
+
+ if (core->vmm_data == NULL) {
+ PrintError(core->vm_info, core, "Could not allocate VMCB, Exiting...\n");
+ return -1;
+ }
+ if (vm_class == V3_PC_VM) {
+ PrintDebug(core->vm_info, core, "Initializing VMCB (addr=%p)\n", (void *)core->vmm_data);
+ Init_VMCB_BIOS((vmcb_t*)(core->vmm_data), core);
+ } else {
+ PrintError(core->vm_info, core, "Invalid VM class\n");
+ return -1;
+ }
- guest_state->rsp = vm_info.vm_regs.rsp;
- guest_state->rip = vm_info.rip;
+ core->core_run_state = CORE_STOPPED;
+ return 0;
+}
- //ctrl_area->instrs.instrs.CR0 = 1;
- ctrl_area->cr_reads.cr0 = 1;
- ctrl_area->cr_writes.cr0 = 1;
- guest_state->efer |= EFER_MSR_svm_enable;
- guest_state->rflags = 0x00000002; // The reserved bit is always 1
- ctrl_area->svm_instrs.VMRUN = 1;
- // guest_state->cr0 = 0x00000001; // PE
- ctrl_area->guest_ASID = 1;
+int v3_deinit_svm_vmcb(struct guest_info * core) {
+ V3_FreePages(V3_PAddr(core->vmm_data), 1);
+ return 0;
+}
- ctrl_area->exceptions.de = 1;
- ctrl_area->exceptions.df = 1;
- ctrl_area->exceptions.pf = 1;
- ctrl_area->exceptions.ts = 1;
- ctrl_area->exceptions.ss = 1;
- ctrl_area->exceptions.ac = 1;
- ctrl_area->exceptions.mc = 1;
- ctrl_area->exceptions.gp = 1;
- ctrl_area->exceptions.ud = 1;
- ctrl_area->exceptions.np = 1;
- ctrl_area->exceptions.of = 1;
- ctrl_area->exceptions.nmi = 1;
+#ifdef V3_CONFIG_CHECKPOINT
+int v3_svm_save_core(struct guest_info * core, void * ctx){
- guest_state->cs.selector = 0x0000;
- guest_state->cs.limit=~0u;
- guest_state->cs.base = guest_state->cs.selector<<4;
- guest_state->cs.attrib.raw = 0xf3;
+ vmcb_saved_state_t * guest_area = GET_VMCB_SAVE_STATE_AREA(core->vmm_data);
+ // Special case saves of data we need immediate access to
+ // in some cases
+ V3_CHKPT_SAVE(ctx, "CPL", core->cpl, failout);
+ V3_CHKPT_SAVE(ctx,"STAR", guest_area->star, failout);
+ V3_CHKPT_SAVE(ctx,"CSTAR", guest_area->cstar, failout);
+ V3_CHKPT_SAVE(ctx,"LSTAR", guest_area->lstar, failout);
+ V3_CHKPT_SAVE(ctx,"SFMASK", guest_area->sfmask, failout);
+ V3_CHKPT_SAVE(ctx,"KERNELGSBASE", guest_area->KernelGsBase, failout);
+ V3_CHKPT_SAVE(ctx,"SYSENTER_CS", guest_area->sysenter_cs, failout);
+ V3_CHKPT_SAVE(ctx,"SYSENTER_ESP", guest_area->sysenter_esp, failout);
+ V3_CHKPT_SAVE(ctx,"SYSENTER_EIP", guest_area->sysenter_eip, failout);
- struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
- for ( i = 0; segregs[i] != NULL; i++) {
- struct vmcb_selector * seg = segregs[i];
+// and then we save the whole enchilada
+ if (v3_chkpt_save(ctx, "VMCB_DATA", PAGE_SIZE, core->vmm_data)) {
+ PrintError(core->vm_info, core, "Could not save SVM vmcb\n");
+ goto failout;
+ }
+
+ return 0;
+
+ failout:
+ PrintError(core->vm_info, core, "Failed to save SVM state for core\n");
+ return -1;
+
+}
+
+int v3_svm_load_core(struct guest_info * core, void * ctx){
- seg->selector = 0x0000;
- seg->base = seg->selector << 4;
- seg->attrib.raw = 0xf3;
- seg->limit = ~0u;
+
+ vmcb_saved_state_t * guest_area = GET_VMCB_SAVE_STATE_AREA(core->vmm_data);
+
+ // Reload what we special cased, which we will overwrite in a minute
+ V3_CHKPT_LOAD(ctx, "CPL", core->cpl, failout);
+ V3_CHKPT_LOAD(ctx,"STAR", guest_area->star, failout);
+ V3_CHKPT_LOAD(ctx,"CSTAR", guest_area->cstar, failout);
+ V3_CHKPT_LOAD(ctx,"LSTAR", guest_area->lstar, failout);
+ V3_CHKPT_LOAD(ctx,"SFMASK", guest_area->sfmask, failout);
+ V3_CHKPT_LOAD(ctx,"KERNELGSBASE", guest_area->KernelGsBase, failout);
+ V3_CHKPT_LOAD(ctx,"SYSENTER_CS", guest_area->sysenter_cs, failout);
+ V3_CHKPT_LOAD(ctx,"SYSENTER_ESP", guest_area->sysenter_esp, failout);
+ V3_CHKPT_LOAD(ctx,"SYSENTER_EIP", guest_area->sysenter_eip, failout);
+
+ // and then we load the whole enchilada
+ if (v3_chkpt_load(ctx, "VMCB_DATA", PAGE_SIZE, core->vmm_data)) {
+ PrintError(core->vm_info, core, "Could not load SVM vmcb\n");
+ goto failout;
}
- if (vm_info.io_map.num_ports > 0) {
- vmm_io_hook_t * iter;
- addr_t io_port_bitmap;
+ return 0;
+
+ failout:
+ PrintError(core->vm_info, core, "Failed to save SVM state for core\n");
+ return -1;
+
+}
+#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)) {
+
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
+ PrintDebug(info->vm_info, info, "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);
+ }
+
+ if ((info->intr_core_state.irq_started == 1) && (guest_ctrl->exit_int_info.valid == 0)) {
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
+ PrintDebug(info->vm_info, info, "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(info->vm_info, info, "EXIT INT INFO is set (vec=%d)\n", guest_ctrl->exit_int_info.vector);
+#endif
+ }
+
+ return 0;
+}
+
+
+static int update_irq_entry_state(struct guest_info * info) {
+ vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
+
+
+ if (info->intr_core_state.irq_pending == 0) {
+ guest_ctrl->guest_ctrl.V_IRQ = 0;
+ guest_ctrl->guest_ctrl.V_INTR_VECTOR = 0;
+ }
- io_port_bitmap = (addr_t)os_hooks->allocate_pages(3);
- memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
+ if (v3_excp_pending(info)) {
+ uint_t excp = v3_get_excp_number(info);
+
+ guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXCEPTION;
+
+ 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(info->vm_info, info, "Injecting exception %d with error code %x\n", excp, guest_ctrl->EVENTINJ.error_code);
+#endif
+ }
+
+ guest_ctrl->EVENTINJ.vector = excp;
+
+ guest_ctrl->EVENTINJ.valid = 1;
+
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
+ PrintDebug(info->vm_info, info, "<%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(info->vm_info, info, "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;
+
+ // We ignore the virtual TPR on this injection
+ // TPR/PPR tests have already been done in the APIC.
+ guest_ctrl->guest_ctrl.V_IGN_TPR = 1;
+ guest_ctrl->guest_ctrl.V_INTR_PRIO = info->intr_core_state.irq_vector >> 4 ; // 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;
+
+ // We ignore the virtual TPR on this injection
+ // TPR/PPR tests have already been done in the APIC.
+ guest_ctrl->guest_ctrl.V_IGN_TPR = 1;
+ guest_ctrl->guest_ctrl.V_INTR_PRIO = info->intr_core_state.irq_vector >> 4 ; // 0xf;
+
+#ifdef V3_CONFIG_DEBUG_INTERRUPTS
+ PrintDebug(info->vm_info, info, "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(info->vm_info, info, "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;
+ }
+
+ }
+
+ return 0;
+}
+
+int
+v3_svm_config_tsc_virtualization(struct guest_info * info) {
+ vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
+
+
+ if (info->time_state.flags & VM_TIME_TRAP_RDTSC) {
+ ctrl_area->instrs.RDTSC = 1;
+ ctrl_area->svm_instrs.RDTSCP = 1;
+ } else {
+ ctrl_area->instrs.RDTSC = 0;
+ ctrl_area->svm_instrs.RDTSCP = 0;
+
+ if (info->time_state.flags & VM_TIME_TSC_PASSTHROUGH) {
+ ctrl_area->TSC_OFFSET = 0;
+ } else {
+ ctrl_area->TSC_OFFSET = v3_tsc_host_offset(&info->time_state);
+ }
+ }
+ 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;
+ uint64_t guest_cycles = 0;
+
+ // Conditionally yield the CPU if the timeslice has expired
+ v3_schedule(info);
+
+ // Update timer devices after being in the VM before doing
+ // IRQ updates, so that any interrupts they raise get seen
+ // immediately.
+ v3_advance_time(info, NULL);
+ v3_update_timers(info);
+
+ // disable global interrupts for vm state transition
+ v3_clgi();
+
+ // 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;
+
+ // CR8 is now updated by read/writes and it contains the APIC TPR
+ // the V_TPR should be just the class part of that.
+ // This update is here just for completeness. We currently
+ // are ignoring V_TPR on all injections and doing the priority logivc
+ // in the APIC.
+ // guest_ctrl->guest_ctrl.V_TPR = ((info->ctrl_regs.apic_tpr) >> 4) & 0xf;
+
+ //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;
- ctrl_area->IOPM_BASE_PA = io_port_bitmap;
+ /* Synchronize MSRs */
+ guest_state->star = info->msrs.star;
+ guest_state->lstar = info->msrs.lstar;
+ guest_state->sfmask = info->msrs.sfmask;
+ guest_state->KernelGsBase = info->msrs.kern_gs_base;
+
+ guest_state->cpl = info->cpl;
- //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
+ v3_set_vmcb_segments((vmcb_t*)(info->vmm_data), &(info->segments));
- FOREACH_IO_HOOK(vm_info.io_map, iter) {
- ushort_t port = iter->port;
- uchar_t * bitmap = (uchar_t *)io_port_bitmap;
+ guest_state->rax = info->vm_regs.rax;
+ guest_state->rip = info->rip;
+ guest_state->rsp = info->vm_regs.rsp;
- bitmap += (port / 8);
- PrintDebug("Setting Bit in block %x\n", bitmap);
- *bitmap |= 1 << (port % 8);
+#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
- //PrintDebugMemDump((uchar_t*)io_port_bitmap, PAGE_SIZE *2);
+ /* ** */
- ctrl_area->instrs.IOIO_PROT = 1;
- }
+ /*
+ PrintDebug(info->vm_info, info, "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(info->vm_info, info, "!!! Injecting Interrupt during Sym call !!!\n");
+ }
+ }
+#endif
- ctrl_area->instrs.INTR = 1;
+ v3_svm_config_tsc_virtualization(info);
+ //V3_Print(info->vm_info, info, "Calling v3_svm_launch\n");
+ {
+ uint64_t entry_tsc = 0;
+ uint64_t exit_tsc = 0;
+
+ rdtscll(entry_tsc);
+ v3_svm_launch((vmcb_t *)V3_PAddr(info->vmm_data), &(info->vm_regs), (vmcb_t *)host_vmcbs[V3_Get_CPU()]);
- if (vm_info.page_mode == SHADOW_PAGING) {
- PrintDebug("Creating initial shadow page table\n");
- vm_info.shdw_pg_state.shadow_cr3 |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
- PrintDebug("Created\n");
+ rdtscll(exit_tsc);
- guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3;
+ guest_cycles = exit_tsc - entry_tsc;
+ }
- ctrl_area->cr_reads.cr3 = 1;
- ctrl_area->cr_writes.cr3 = 1;
+ //V3_Print(info->vm_info, info, "SVM Returned: Exit Code: %x, guest_rip=%lx\n", (uint32_t)(guest_ctrl->exit_code), (unsigned long)guest_state->rip);
- ctrl_area->instrs.INVLPG = 1;
- ctrl_area->instrs.INVLPGA = 1;
+ v3_last_exit = (uint32_t)(guest_ctrl->exit_code);
- guest_state->g_pat = 0x7040600070406ULL;
+ v3_advance_time(info, &guest_cycles);
- guest_state->cr0 |= 0x80000000;
- } else if (vm_info.page_mode == NESTED_PAGING) {
- // Flush the TLB on entries/exits
- //ctrl_area->TLB_CONTROL = 1;
+ info->num_exits++;
- // Enable Nested Paging
- //ctrl_area->NP_ENABLE = 1;
+ // Save Guest state from VMCB
+ info->rip = guest_state->rip;
+ info->vm_regs.rsp = guest_state->rsp;
+ info->vm_regs.rax = guest_state->rax;
- //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
+ info->cpl = guest_state->cpl;
- // Set the Nested Page Table pointer
- // ctrl_area->N_CR3 = ((addr_t)vm_info.page_tables);
- // ctrl_area->N_CR3 = (addr_t)(vm_info.page_tables);
+ 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;
+ //
+ // We do not track this anymore
+ // V_TPR is ignored and we do the logic in the APIC
+ //info->ctrl_regs.cr8 = guest_ctrl->guest_ctrl.V_TPR;
+ //
+ info->ctrl_regs.rflags = guest_state->rflags;
+ info->ctrl_regs.efer = guest_state->efer;
+
+ /* Synchronize MSRs */
+ info->msrs.star = guest_state->star;
+ info->msrs.lstar = guest_state->lstar;
+ info->msrs.sfmask = guest_state->sfmask;
+ info->msrs.kern_gs_base = guest_state->KernelGsBase;
+
+ 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);
+ /* ** */
- // ctrl_area->N_CR3 = Get_CR3();
- // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
+ // save exit info here
+ exit_code = guest_ctrl->exit_code;
+ exit_info1 = guest_ctrl->exit_info1;
+ exit_info2 = guest_ctrl->exit_info2;
- // guest_state->g_pat = 0x7040600070406ULL;
- }
+#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_schedule(info);
+ // This update timers is for time-dependent handlers
+ // if we're slaved to host time
+ v3_advance_time(info, NULL);
+ v3_update_timers(info);
-}
+ {
+ int ret = v3_handle_svm_exit(info, exit_code, exit_info1, exit_info2);
+
+ if (ret != 0) {
+ PrintError(info->vm_info, info, "Error in SVM exit handler (ret=%d)\n", ret);
+ PrintError(info->vm_info, info, " last Exit was %d (exit code=0x%llx)\n", v3_last_exit, (uint64_t) exit_code);
+ return -1;
+ }
+ }
+
+ if (info->timeouts.timeout_active) {
+ /* Check to see if any timeouts have expired */
+ v3_handle_timeouts(info, guest_cycles);
+ }
+ return 0;
+}
-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;
+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));
- guest_state->rsp = vm_info.vm_regs.rsp;
- // guest_state->rip = vm_info.rip;
- guest_state->rip = 0xfff0;
+ PrintDebug(info->vm_info, info, "Starting SVM core %u (on logical core %u)\n", info->vcpu_id, info->pcpu_id);
- guest_state->cpl = 0;
+ if (info->vcpu_id == 0) {
+ info->core_run_state = CORE_RUNNING;
+ } else {
+ PrintDebug(info->vm_info, info, "SVM core %u (on %u): Waiting for core initialization\n", info->vcpu_id, info->pcpu_id);
- //ctrl_area->instrs.instrs.CR0 = 1;
- ctrl_area->cr_reads.cr0 = 1;
- ctrl_area->cr_writes.cr0 = 1;
+ 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;
+ }
- guest_state->efer |= EFER_MSR_svm_enable;
- guest_state->rflags = 0x00000002; // The reserved bit is always 1
- ctrl_area->svm_instrs.VMRUN = 1;
- ctrl_area->instrs.HLT = 1;
- // guest_state->cr0 = 0x00000001; // PE
- ctrl_area->guest_ASID = 1;
+ v3_yield(info,-1);
+ //PrintDebug(info->vm_info, info, "SVM core %u: still waiting for INIT\n", info->vcpu_id);
+ }
- ctrl_area->exceptions.de = 1;
- ctrl_area->exceptions.df = 1;
- ctrl_area->exceptions.pf = 1;
- ctrl_area->exceptions.ts = 1;
- ctrl_area->exceptions.ss = 1;
- ctrl_area->exceptions.ac = 1;
- ctrl_area->exceptions.mc = 1;
- ctrl_area->exceptions.gp = 1;
- ctrl_area->exceptions.ud = 1;
- ctrl_area->exceptions.np = 1;
- ctrl_area->exceptions.of = 1;
- ctrl_area->exceptions.nmi = 1;
+ PrintDebug(info->vm_info, info, "SVM core %u(on %u) initialized\n", info->vcpu_id, info->pcpu_id);
- vm_info.vm_regs.rdx = 0x00000f00;
+ // We'll be paranoid about race conditions here
+ v3_wait_at_barrier(info);
+ }
- guest_state->cr0 = 0x60000010;
+ PrintDebug(info->vm_info, info, "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));
- guest_state->cs.selector = 0xf000;
- guest_state->cs.limit=0xffff;
- guest_state->cs.base = 0x0000000f0000LL;
- guest_state->cs.attrib.raw = 0xf3;
-
- struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
- for ( i = 0; segregs[i] != NULL; i++) {
- struct vmcb_selector * seg = segregs[i];
+
+ PrintDebug(info->vm_info, info, "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));
- seg->selector = 0x0000;
- // seg->base = seg->selector << 4;
- seg->base = 0x00000000;
- seg->attrib.raw = 0xf3;
- seg->limit = ~0u;
- }
-
- guest_state->gdtr.limit = 0x0000ffff;
- guest_state->gdtr.base = 0x0000000000000000LL;
- guest_state->idtr.limit = 0x0000ffff;
- guest_state->idtr.base = 0x0000000000000000LL;
+ 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->vm_info->run_state = VM_ERROR;
+
+ V3_Print(info->vm_info, info, "SVM core %u: SVM ERROR!!\n", info->vcpu_id);
+
+ v3_print_guest_state(info);
+
+ V3_Print(info->vm_info, info, "SVM core %u: SVM Exit Code: %p\n", info->vcpu_id, (void *)(addr_t)guest_ctrl->exit_code);
+
+ V3_Print(info->vm_info, info, "SVM core %u: exit_info1 low = 0x%.8x\n", info->vcpu_id, *(uint_t*)&(guest_ctrl->exit_info1));
+ V3_Print(info->vm_info, info, "SVM core %u: exit_info1 high = 0x%.8x\n", info->vcpu_id, *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info1)) + 4));
+
+ V3_Print(info->vm_info, info, "SVM core %u: exit_info2 low = 0x%.8x\n", info->vcpu_id, *(uint_t*)&(guest_ctrl->exit_info2));
+ V3_Print(info->vm_info, info, "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) {
+ v3_gpa_to_hva(info, linear_addr, &host_addr);
+ } else if (info->mem_mode == VIRTUAL_MEM) {
+ v3_gva_to_hva(info, linear_addr, &host_addr);
+ }
+
+ V3_Print(info->vm_info, info, "SVM core %u: Host Address of rip = 0x%p\n", info->vcpu_id, (void *)host_addr);
+
+ V3_Print(info->vm_info, info, "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);
+
+ break;
+ }
+
+ 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(info->vm_info, info, "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;
+}
+
- 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;
- guest_state->dr6 = 0x00000000ffff0ff0LL;
- guest_state->dr7 = 0x0000000000000400LL;
- if (vm_info.io_map.num_ports > 0) {
- vmm_io_hook_t * iter;
- addr_t io_port_bitmap;
+
+/* Checks machine SVM capability */
+/* Implemented from: AMD Arch Manual 3, sect 15.4 */
+int v3_is_svm_capable() {
+ uint_t vm_cr_low = 0, vm_cr_high = 0;
+ uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
+
+ v3_cpuid(CPUID_EXT_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
+
+ PrintDebug(VM_NONE, VCORE_NONE, "CPUID_EXT_FEATURE_IDS_ecx=0x%x\n", ecx);
+
+ if ((ecx & CPUID_EXT_FEATURE_IDS_ecx_svm_avail) == 0) {
+ V3_Print(VM_NONE, VCORE_NONE, "SVM Not Available\n");
+ return 0;
+ } else {
+ v3_get_msr(SVM_VM_CR_MSR, &vm_cr_high, &vm_cr_low);
+
+ PrintDebug(VM_NONE, VCORE_NONE, "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) {
+ V3_Print(VM_NONE, VCORE_NONE, "SVM is available but is disabled.\n");
+
+ v3_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
+
+ PrintDebug(VM_NONE, VCORE_NONE, "CPUID_SVM_REV_AND_FEATURE_IDS_edx=0x%x\n", edx);
+
+ if ((edx & CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml) == 0) {
+ V3_Print(VM_NONE, VCORE_NONE, "SVM BIOS Disabled, not unlockable\n");
+ } else {
+ V3_Print(VM_NONE, VCORE_NONE, "SVM is locked with a key\n");
+ }
+ return 0;
+
+ } else {
+ V3_Print(VM_NONE, VCORE_NONE, "SVM is available and enabled.\n");
+
+ v3_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
+ PrintDebug(VM_NONE, VCORE_NONE, "CPUID_SVM_REV_AND_FEATURE_IDS_eax=0x%x\n", eax);
+ PrintDebug(VM_NONE, VCORE_NONE, "CPUID_SVM_REV_AND_FEATURE_IDS_ebx=0x%x\n", ebx);
+ PrintDebug(VM_NONE, VCORE_NONE, "CPUID_SVM_REV_AND_FEATURE_IDS_ecx=0x%x\n", ecx);
+ PrintDebug(VM_NONE, VCORE_NONE, "CPUID_SVM_REV_AND_FEATURE_IDS_edx=0x%x\n", edx);
+
+ return 1;
+ }
+ }
+}
+
+static int has_svm_nested_paging() {
+ uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
+
+ v3_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
- io_port_bitmap = (addr_t)os_hooks->allocate_pages(3);
- memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
+ //PrintDebug(VM_NONE, VCORE_NONE, "CPUID_EXT_FEATURE_IDS_edx=0x%x\n", edx);
- ctrl_area->IOPM_BASE_PA = io_port_bitmap;
+ if ((edx & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 0) {
+ V3_Print(VM_NONE, VCORE_NONE, "SVM Nested Paging not supported\n");
+ return 0;
+ } else {
+ V3_Print(VM_NONE, VCORE_NONE, "SVM Nested Paging supported\n");
+ return 1;
+ }
+ }
+
+
+
+void v3_init_svm_cpu(int cpu_id) {
+ reg_ex_t msr;
+ 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("Setting up IO Map at 0x%x\n", io_port_bitmap);
+ V3_Print(VM_NONE, VCORE_NONE, "SVM Enabled\n");
- FOREACH_IO_HOOK(vm_info.io_map, iter) {
- ushort_t port = iter->port;
- uchar_t * bitmap = (uchar_t *)io_port_bitmap;
+ // Setup the host state save area
+ host_vmcbs[cpu_id] = (addr_t)V3_AllocPages(4);
- bitmap += (port / 8);
- PrintDebug("Setting Bit for port 0x%x\n", port);
- *bitmap |= 1 << (port % 8);
+ if (!host_vmcbs[cpu_id]) {
+ PrintError(VM_NONE, VCORE_NONE, "Failed to allocate VMCB\n");
+ return;
}
+ /* 64-BIT-ISSUE */
+ // msr.e_reg.high = 0;
+ //msr.e_reg.low = (uint_t)host_vmcb;
+ msr.r_reg = host_vmcbs[cpu_id];
+
+ PrintDebug(VM_NONE, VCORE_NONE, "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_types[cpu_id] = V3_SVM_REV3_CPU;
+ } else {
+ v3_cpu_types[cpu_id] = V3_SVM_CPU;
+ }
+}
+
+
+
+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(VM_NONE, VCORE_NONE, "Host CPU %d host area freed, and SVM disabled\n", cpu_id);
+ return;
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
- //PrintDebugMemDump((uchar_t*)io_port_bitmap, PAGE_SIZE *2);
- ctrl_area->instrs.IOIO_PROT = 1;
- }
- PrintDebug("Exiting on interrupts\n");
- ctrl_area->guest_ctrl.V_INTR_MASKING = 1;
- ctrl_area->instrs.INTR = 1;
- if (vm_info.page_mode == SHADOW_PAGING) {
- PrintDebug("Creating initial shadow page table\n");
- vm_info.shdw_pg_state.shadow_cr3 |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
- PrintDebug("Created\n");
- guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3;
- //PrintDebugPageTables((pde32_t*)(vm_info.shdw_pg_state.shadow_cr3.e_reg.low));
- ctrl_area->cr_reads.cr3 = 1;
- ctrl_area->cr_writes.cr3 = 1;
- ctrl_area->instrs.INVLPG = 1;
- ctrl_area->instrs.INVLPGA = 1;
- guest_state->g_pat = 0x7040600070406ULL;
- guest_state->cr0 |= 0x80000000;
- } else if (vm_info.page_mode == NESTED_PAGING) {
- // Flush the TLB on entries/exits
- //ctrl_area->TLB_CONTROL = 1;
- // Enable Nested Paging
- //ctrl_area->NP_ENABLE = 1;
- //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
- // Set the Nested Page Table pointer
- // ctrl_area->N_CR3 = ((addr_t)vm_info.page_tables);
- // ctrl_area->N_CR3 = (addr_t)(vm_info.page_tables);
- // ctrl_area->N_CR3 = Get_CR3();
- // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
- // guest_state->g_pat = 0x7040600070406ULL;
- }
-}
+
+
+#if 0
+/*
+ * Test VMSAVE/VMLOAD Latency
+ */
+#define vmsave ".byte 0x0F,0x01,0xDB ; "
+#define vmload ".byte 0x0F,0x01,0xDA ; "
+{
+ uint32_t start_lo, start_hi;
+ uint32_t end_lo, end_hi;
+ uint64_t start, end;
+
+ __asm__ __volatile__ (
+ "rdtsc ; "
+ "movl %%eax, %%esi ; "
+ "movl %%edx, %%edi ; "
+ "movq %%rcx, %%rax ; "
+ vmsave
+ "rdtsc ; "
+ : "=D"(start_hi), "=S"(start_lo), "=a"(end_lo),"=d"(end_hi)
+ : "c"(host_vmcb[cpu_id]), "0"(0), "1"(0), "2"(0), "3"(0)
+ );
+
+ start = start_hi;
+ start <<= 32;
+ start += start_lo;
+
+ end = end_hi;
+ end <<= 32;
+ end += end_lo;
+
+ PrintDebug(core->vm_info, core, "VMSave Cycle Latency: %d\n", (uint32_t)(end - start));
+
+ __asm__ __volatile__ (
+ "rdtsc ; "
+ "movl %%eax, %%esi ; "
+ "movl %%edx, %%edi ; "
+ "movq %%rcx, %%rax ; "
+ vmload
+ "rdtsc ; "
+ : "=D"(start_hi), "=S"(start_lo), "=a"(end_lo),"=d"(end_hi)
+ : "c"(host_vmcb[cpu_id]), "0"(0), "1"(0), "2"(0), "3"(0)
+ );
+
+ start = start_hi;
+ start <<= 32;
+ start += start_lo;
+
+ end = end_hi;
+ end <<= 32;
+ end += end_lo;
+
+
+ PrintDebug(core->vm_info, core, "VMLoad Cycle Latency: %d\n", (uint32_t)(end - start));
+ }
+ /* End Latency Test */
+
+#endif
+
+
+
+
+
#if 0
ctrl_area->instrs.IOIO_PROT = 1;
- ctrl_area->IOPM_BASE_PA = (uint_t)os_hooks->allocate_pages(3);
+ ctrl_area->IOPM_BASE_PA = (uint_t)V3_AllocPages(3);
+
+ if (!ctrl_area->IOPM_BASE_PA) {
+ PrintError(core->vm_info, core, "Cannot allocate IO bitmap\n");
+ return;
+ }
{
reg_ex_t tmp_reg;
GetGDTR(gdt_buf);
gdt_base = *(ulong_t*)((uchar_t*)gdt_buf + 2) & 0xffffffff;
gdt_limit = *(ushort_t*)(gdt_buf) & 0xffff;
- PrintDebug("GDT: base: %x, limit: %x\n", gdt_base, gdt_limit);
+ PrintDebug(core->vm_info, core, "GDT: base: %x, limit: %x\n", gdt_base, gdt_limit);
GetIDTR(idt_buf);
idt_base = *(ulong_t*)(idt_buf + 2) & 0xffffffff;
idt_limit = *(ushort_t*)(idt_buf) & 0xffff;
- PrintDebug("IDT: base: %x, limit: %x\n",idt_base, idt_limit);
+ PrintDebug(core->vm_info, core, "IDT: base: %x, limit: %x\n",idt_base, idt_limit);
// gdt_base -= 0x2000;
// Enable Nested Paging
ctrl_area->NP_ENABLE = 1;
- PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
+ PrintDebug(core->vm_info, core, "NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
// Set the Nested Page Table pointer
ctrl_area->N_CR3 |= ((addr_t)vm_info.page_tables & 0xfffff000);
guest_state->g_pat = 0x7040600070406ULL;
- PrintDebug("Set Nested CR3: lo: 0x%x hi: 0x%x\n", (uint_t)*(&(ctrl_area->N_CR3)), (uint_t)*((unsigned char *)&(ctrl_area->N_CR3) + 4));
- PrintDebug("Set Guest CR3: lo: 0x%x hi: 0x%x\n", (uint_t)*(&(guest_state->cr3)), (uint_t)*((unsigned char *)&(guest_state->cr3) + 4));
+ PrintDebug(core->vm_info, core, "Set Nested CR3: lo: 0x%x hi: 0x%x\n", (uint_t)*(&(ctrl_area->N_CR3)), (uint_t)*((unsigned char *)&(ctrl_area->N_CR3) + 4));
+ PrintDebug(core->vm_info, core, "Set Guest CR3: lo: 0x%x hi: 0x%x\n", (uint_t)*(&(guest_state->cr3)), (uint_t)*((unsigned char *)&(guest_state->cr3) + 4));
// Enable Paging
// guest_state->cr0 |= 0x80000000;
}
#endif
-
-
-
-
-
-
-
-
-
-
-
-
-/*
-
-
-void Init_VMCB_Real(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;
-
-
- guest_state->rsp = vm_info.vm_regs.rsp;
- guest_state->rip = vm_info.rip;
-
-
- guest_state->efer |= EFER_MSR_svm_enable;
- guest_state->rflags = 0x00000002; // The reserved bit is always 1
- ctrl_area->svm_instrs.instrs.VMRUN = 1;
- ctrl_area->guest_ASID = 1;
- guest_state->cr0 = 0x60000010;
-
-
- ctrl_area->exceptions.de = 1;
- ctrl_area->exceptions.df = 1;
- ctrl_area->exceptions.pf = 1;
- ctrl_area->exceptions.ts = 1;
- ctrl_area->exceptions.ss = 1;
- ctrl_area->exceptions.ac = 1;
- ctrl_area->exceptions.mc = 1;
- ctrl_area->exceptions.gp = 1;
- ctrl_area->exceptions.ud = 1;
- ctrl_area->exceptions.np = 1;
- ctrl_area->exceptions.of = 1;
- ctrl_area->exceptions.nmi = 1;
-
- guest_state->cs.selector = 0xf000;
- guest_state->cs.limit=0xffff;
- guest_state->cs.base = 0xffff0000;
- guest_state->cs.attrib.raw = 0x9a;
-
-
- struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
- for ( i = 0; segregs[i] != NULL; i++) {
- struct vmcb_selector * seg = segregs[i];
-
- seg->selector = 0x0000;
- seg->base = 0xffff0000;
- seg->attrib.raw = 0x9b;
- seg->limit = 0xffff;
- }
-
- // Set GPRs
- //
- // EDX == 0xfxx
- // EAX, EBX, ECX, ESI, EDI, EBP, ESP == 0x0
- //
-
- guest_state->gdtr.base = 0;
- guest_state->gdtr.limit = 0xffff;
- guest_state->gdtr.attrib.raw = 0x0;
-
- guest_state->idtr.base = 0;
- guest_state->idtr.limit = 0xffff;
- guest_state->idtr.attrib.raw = 0x0;
-
- guest_state->ldtr.base = 0;
- guest_state->ldtr.limit = 0xffff;
- guest_state->ldtr.attrib.raw = 0x82;
-
- guest_state->tr.base = 0;
- guest_state->tr.limit = 0xffff;
- guest_state->tr.attrib.raw = 0x83;
-
-
-
-
- if (vm_info.io_map.num_ports > 0) {
- vmm_io_hook_t * iter;
- addr_t io_port_bitmap;
-
- io_port_bitmap = (addr_t)os_hooks->allocate_pages(3);
- memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
-
- ctrl_area->IOPM_BASE_PA = io_port_bitmap;
-
- //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
-
- FOREACH_IO_HOOK(vm_info.io_map, iter) {
- ushort_t port = iter->port;
- uchar_t * bitmap = (uchar_t *)io_port_bitmap;
-
- bitmap += (port / 8);
- PrintDebug("Setting Bit in block %x\n", bitmap);
- *bitmap |= 1 << (port % 8);
- }
-
- ctrl_area->instrs.instrs.IOIO_PROT = 1;
- }
-
- ctrl_area->instrs.instrs.INTR = 1;
-
- // also determine if CPU supports nested paging
-
- if (vm_info.page_mode == SHADOW_PAGING) {
- PrintDebug("Creating initial shadow page table\n");
- vm_info.shdw_pg_state.shadow_cr3.e_reg.low |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
- PrintDebug("Created\n");
-
- guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3.r_reg;
-
- ctrl_area->cr_reads.crs.cr3 = 1;
- ctrl_area->cr_writes.crs.cr3 = 1;
- ctrl_area->cr_reads.crs.cr0 = 1;
- ctrl_area->cr_writes.crs.cr0 = 1;
-
- ctrl_area->instrs.instrs.INVLPG = 1;
- ctrl_area->instrs.instrs.INVLPGA = 1;
-
-
- guest_state->g_pat = 0x7040600070406ULL;
-
- vm_info.shdw_pg_state.guest_cr0.e_reg.low = guest_state->cr0;
- guest_state->cr0 |= 0x80000000;
- } else if (vm_info.page_mode == NESTED_PAGING) {
- // Flush the TLB on entries/exits
- //ctrl_area->TLB_CONTROL = 1;
-
- // Enable Nested Paging
- //ctrl_area->NP_ENABLE = 1;
-
- //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
-
- // Set the Nested Page Table pointer
- // ctrl_area->N_CR3 = ((addr_t)vm_info.page_tables);
- // ctrl_area->N_CR3 = (addr_t)(vm_info.page_tables);
-
- // ctrl_area->N_CR3 = Get_CR3();
- // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
-
- // guest_state->g_pat = 0x7040600070406ULL;
- }
-
-}
-*/
