X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fsvm.c;h=b9f4a9f6f41a77f183c6f035d0dd2d7930304bcf;hb=a1e2f463ccac3d46ae9410156ae0679bbeb1ce09;hp=1a9f1b8eb5edae238182deaffaae0fb99c055d7c;hpb=41d6dcb0a638ebdc01b89a9edf427c75975b2003;p=palacios.git diff --git a/palacios/src/palacios/svm.c b/palacios/src/palacios/svm.c index 1a9f1b8..b9f4a9f 100644 --- a/palacios/src/palacios/svm.c +++ b/palacios/src/palacios/svm.c @@ -1,3 +1,26 @@ +/* + * 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 + * Copyright (c) 2008, The V3VEE Project + * All rights reserved. + * + * Author: Jack Lange + * + * This is free software. You are permitted to use, + * redistribute, and modify it as specified in the file "V3VEE_LICENSE". + */ + + + + + #include #include @@ -10,34 +33,24 @@ #include #include +#include +#include -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(); extern uint_t Get_CR3(); -extern void DisableInts(); - - +extern void v3_stgi(); +extern void v3_clgi(); +extern int v3_svm_launch(vmcb_t * vmcb, struct v3_gprs * vm_regs); static vmcb_t * Allocate_VMCB() { - vmcb_t * vmcb_page = (vmcb_t*)os_hooks->allocate_pages(1); - + vmcb_t * vmcb_page = (vmcb_t *)V3_VAddr(V3_AllocPages(1)); memset(vmcb_page, 0, 4096); @@ -48,14 +61,14 @@ static vmcb_t * Allocate_VMCB() { -static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) { +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; - guest_state->rsp = vm_info.vm_regs.rsp; - // guest_state->rip = vm_info.rip; + guest_state->rsp = vm_info->vm_regs.rsp; + // guest_state->rip = vm_info->rip; guest_state->rip = 0xfff0; guest_state->cpl = 0; @@ -67,24 +80,50 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) { 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->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.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.HLT = 1; // guest_state->cr0 = 0x00000001; // PE ctrl_area->guest_ASID = 1; - 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; + + /* + 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; + */ + // Debug of boot on physical machines - 7/14/08 + ctrl_area->instrs.NMI=1; + ctrl_area->instrs.SMI=1; + ctrl_area->instrs.INIT=1; + ctrl_area->instrs.PAUSE=1; + ctrl_area->instrs.shutdown_evts=1; + - vm_info.vm_regs.rdx = 0x00000f00; + + vm_info->vm_regs.rdx = 0x00000f00; guest_state->cr0 = 0x60000010; @@ -94,6 +133,10 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) { guest_state->cs.attrib.raw = 0xf3; + /* 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}; for ( i = 0; segregs[i] != NULL; i++) { struct vmcb_selector * seg = segregs[i]; @@ -121,23 +164,23 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) { guest_state->dr6 = 0x00000000ffff0ff0LL; guest_state->dr7 = 0x0000000000000400LL; - if (vm_info.io_map.num_ports > 0) { - vmm_io_hook_t * iter; + if (vm_info->io_map.num_ports > 0) { + struct vmm_io_hook * iter; addr_t io_port_bitmap; - io_port_bitmap = (addr_t)os_hooks->allocate_pages(3); + io_port_bitmap = (addr_t)V3_VAddr(V3_AllocPages(3)); memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3); - ctrl_area->IOPM_BASE_PA = io_port_bitmap; + ctrl_area->IOPM_BASE_PA = (addr_t)V3_PAddr((void *)io_port_bitmap); //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap); - FOREACH_IO_HOOK(vm_info.io_map, iter) { + 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 for port 0x%x\n", port); + // PrintDebug("Setting Bit for port 0x%x\n", port); *bitmap |= 1 << (port % 8); } @@ -154,14 +197,16 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) { ctrl_area->instrs.INTR = 1; - if (vm_info.shdw_pg_mode == SHADOW_PAGING) { + if (vm_info->shdw_pg_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); + vm_info->direct_map_pt = (addr_t)create_passthrough_pde32_pts(vm_info); + vm_info->shdw_pg_state.shadow_cr3 |= (vm_info->direct_map_pt & ~0xfff); + vm_info->shdw_pg_state.guest_cr0 = 0x0000000000000010LL; PrintDebug("Created\n"); - guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3; + guest_state->cr3 = vm_info->shdw_pg_state.shadow_cr3; - //PrintDebugPageTables((pde32_t*)(vm_info.shdw_pg_state.shadow_cr3.e_reg.low)); + //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; @@ -170,26 +215,35 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) { ctrl_area->instrs.INVLPG = 1; ctrl_area->instrs.INVLPGA = 1; + ctrl_area->exceptions.pf = 1; + + /* JRL: This is a performance killer, and a simplistic solution */ + /* We need to fix this */ + ctrl_area->TLB_CONTROL = 1; + + + guest_state->g_pat = 0x7040600070406ULL; guest_state->cr0 |= 0x80000000; - } else if (vm_info.shdw_pg_mode == NESTED_PAGING) { + + } else if (vm_info->shdw_pg_mode == NESTED_PAGING) { // Flush the TLB on entries/exits - //ctrl_area->TLB_CONTROL = 1; + ctrl_area->TLB_CONTROL = 1; // Enable Nested Paging - //ctrl_area->NP_ENABLE = 1; + ctrl_area->NP_ENABLE = 1; - //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE)); + 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); + // Set the Nested Page Table pointer + vm_info->direct_map_pt = ((addr_t)create_passthrough_pde32_pts(vm_info) & ~0xfff); + ctrl_area->N_CR3 = vm_info->direct_map_pt; // ctrl_area->N_CR3 = Get_CR3(); // guest_state->cr3 |= (Get_CR3() & 0xfffff000); - // guest_state->g_pat = 0x7040600070406ULL; + guest_state->g_pat = 0x7040600070406ULL; } @@ -197,13 +251,6 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) { } - - - - - - - static int init_svm_guest(struct guest_info *info) { PrintDebug("Allocating VMCB\n"); @@ -218,9 +265,11 @@ static int init_svm_guest(struct guest_info *info) { PrintDebug("Initializing VMCB (addr=%x)\n", info->vmm_data); - Init_VMCB_BIOS((vmcb_t*)(info->vmm_data), *info); + Init_VMCB_BIOS((vmcb_t*)(info->vmm_data), info); + info->run_state = VM_STOPPED; + // info->rip = 0; info->vm_regs.rdi = 0; @@ -236,41 +285,68 @@ static int init_svm_guest(struct guest_info *info) { } + // can we start a kernel thread here... 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; + + PrintDebug("Launching SVM VM (vmcb=%x)\n", info->vmm_data); //PrintDebugVMCB((vmcb_t*)(info->vmm_data)); + info->run_state = VM_RUNNING; + while (1) { ullong_t tmp_tsc; + uint_t vm_cr_low = 0, vm_cr_high = 0; + + v3_enable_ints(); + v3_clgi(); - CLGI(); - // PrintDebug("SVM Entry...\n"); + PrintDebug("SVM Entry to rip=%x...\n", info->rip); + + v3_get_msr(0xc0000101, &vm_cr_high, &vm_cr_low); rdtscll(info->time_state.cached_host_tsc); - guest_ctrl->TSC_OFFSET = info->time_state.guest_tsc - info->time_state.cached_host_tsc; - safe_svm_launch((vmcb_t*)(info->vmm_data), &(info->vm_regs)); + guest_ctrl->TSC_OFFSET = info->time_state.guest_tsc - info->time_state.cached_host_tsc; + v3_svm_launch((vmcb_t*)V3_PAddr(info->vmm_data), &(info->vm_regs)); rdtscll(tmp_tsc); - //PrintDebug("SVM Returned\n"); + + v3_set_msr(0xc0000101, vm_cr_high, vm_cr_low); + PrintDebug("SVM Returned\n"); + + + { + uint_t x = 0; + PrintDebug("RSP=%p\n", &x); + } v3_update_time(info, tmp_tsc - info->time_state.cached_host_tsc); + num_exits++; + + PrintDebug("Turning on global interrupts\n"); + v3_stgi(); + + + PrintDebug("SVM Exit number %d\n", num_exits); - STGI(); - if (handle_svm_exit(info) != 0) { + if (v3_handle_svm_exit(info) != 0) { addr_t host_addr; addr_t linear_addr = 0; + info->run_state = VM_ERROR; + PrintDebug("SVM ERROR!!\n"); PrintDebug("RIP: %x\n", guest_state->rip); @@ -279,20 +355,22 @@ static int start_svm_guest(struct guest_info *info) { linear_addr = get_addr_linear(info, guest_state->rip, &(info->segments.cs)); - PrintDebug("RIP Linear: %x\n", linear_addr); - + PrintDebug("RIP Linear: %\n", linear_addr); + v3_print_segments(info); + v3_print_ctrl_regs(info); + v3_print_GPRs(info); if (info->mem_mode == PHYSICAL_MEM) { - guest_pa_to_host_pa(info, linear_addr, &host_addr); + guest_pa_to_host_va(info, linear_addr, &host_addr); } else if (info->mem_mode == VIRTUAL_MEM) { - guest_va_to_host_pa(info, linear_addr, &host_addr); + guest_va_to_host_va(info, linear_addr, &host_addr); } PrintDebug("Host Address of rip = 0x%x\n", host_addr); PrintDebug("Instr (15 bytes) at %x:\n", host_addr); - PrintTraceMemDump((char*)host_addr, 15); + PrintTraceMemDump((uchar_t *)host_addr, 15); break; } @@ -303,70 +381,153 @@ static int start_svm_guest(struct guest_info *info) { + /* 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); +int v3_is_svm_capable() { + +#if 1 + // Dinda uint_t vm_cr_low = 0, vm_cr_high = 0; + addr_t eax = 0, ebx = 0, ecx = 0, edx = 0; + + v3_cpuid(CPUID_FEATURE_IDS, &eax, &ebx, &ecx, &edx); + + PrintDebug("CPUID_FEATURE_IDS_ecx=0x%x\n", ecx); + + if ((ecx & CPUID_FEATURE_IDS_ecx_svm_avail) == 0) { + PrintDebug("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_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx); + + PrintDebug("CPUID_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"); + } else { + PrintDebug("SVM is locked with a key\n"); + } + return 0; + + } else { + PrintDebug("SVM is available and enabled.\n"); + v3_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx); + + PrintDebug("CPUID_FEATURE_IDS_edx=0x%x\n", edx); - if ((ret & CPUID_FEATURE_IDS_ecx_svm_avail) == 0) { + 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"); + } + + return 1; + + } + } + +#else + uint_t eax = 0, ebx = 0, ecx = 0, edx = 0; + addr_t vm_cr_low = 0, vm_cr_high = 0; + + v3_cpuid(CPUID_FEATURE_IDS, &eax, &ebx, &ecx, &edx); + + if ((ecx & 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); + 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 ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 1) { + // this part is clearly wrong, since the np bit is in + // edx, not ecx + if ((edx & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 1) { PrintDebug("Nested Paging not supported\n"); + } else { + PrintDebug("Nested Paging supported\n"); } if ((vm_cr_low & SVM_VM_CR_MSR_svmdis) == 0) { + PrintDebug("SVM is disabled.\n"); return 1; } - ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS); + v3_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx); - if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml) == 0) { + if ((edx & 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"); } return 0; + +#endif + } +static int has_svm_nested_paging() { + addr_t eax = 0, ebx = 0, ecx = 0, edx = 0; + v3_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx); + + //PrintDebug("CPUID_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"); + return 0; + } else { + PrintDebug("SVM Nested Paging supported\n"); + return 1; + } + +} -void Init_SVM(struct vmm_ctrl_ops * vmm_ops) { + + +void v3_init_SVM(struct v3_ctrl_ops * vmm_ops) { reg_ex_t msr; void * host_state; // Enable SVM on the CPU - Get_MSR(EFER_MSR, &(msr.e_reg.high), &(msr.e_reg.low)); + v3_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); + v3_set_msr(EFER_MSR, 0, msr.e_reg.low); PrintDebug("SVM Enabled\n"); // Setup the host state save area - host_state = os_hooks->allocate_pages(4); + host_state = V3_AllocPages(4); - msr.e_reg.high = 0; - msr.e_reg.low = (uint_t)host_state; + /* 64-BIT-ISSUE */ + // msr.e_reg.high = 0; + //msr.e_reg.low = (uint_t)host_state; + msr.r_reg = (addr_t)host_state; - 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); + PrintDebug("Host State being saved at %x\n", (addr_t)host_state); + v3_set_msr(SVM_VM_HSAVE_PA_MSR, msr.e_reg.high, msr.e_reg.low); // 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; } @@ -473,10 +634,10 @@ void Init_SVM(struct vmm_ctrl_ops * vmm_ops) { } if (vm_info.io_map.num_ports > 0) { - vmm_io_hook_t * iter; + struct vmm_io_hook * iter; addr_t io_port_bitmap; - io_port_bitmap = (addr_t)os_hooks->allocate_pages(3); + io_port_bitmap = (addr_t)V3_AllocPages(3); memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3); ctrl_area->IOPM_BASE_PA = io_port_bitmap; @@ -634,7 +795,7 @@ void Init_VMCB_pe(vmcb_t *vmcb, struct guest_info vm_info) { 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); { reg_ex_t tmp_reg;