X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmx.c;h=ca875bb2ec806ff8aa2ab49e0952fa8d0dced4c0;hb=281d544b5352321631fb51c394e1ae0a9680b752;hp=54ccd3cbf2b7ed478c18834403cf7f82eecf0e4e;hpb=c58da27ff29c9cd0511c7c3f64eff2644fa85961;p=palacios.git diff --git a/palacios/src/palacios/vmx.c b/palacios/src/palacios/vmx.c index 54ccd3c..ca875bb 100644 --- a/palacios/src/palacios/vmx.c +++ b/palacios/src/palacios/vmx.c @@ -31,6 +31,12 @@ #include #include #include +#include +#include + +#ifdef V3_CONFIG_CHECKPOINT +#include +#endif #include #include @@ -130,53 +136,6 @@ static int init_vmcs_bios(struct guest_info * core, struct vmx_data * vmx_state) /******* Setup Host State **********/ /* Cache GDTR, IDTR, and TR in host struct */ - addr_t gdtr_base; - struct { - uint16_t selector; - addr_t base; - } __attribute__((packed)) tmp_seg; - - - __asm__ __volatile__( - "sgdt (%0);" - : - : "q"(&tmp_seg) - : "memory" - ); - gdtr_base = tmp_seg.base; - vmx_state->host_state.gdtr.base = gdtr_base; - - __asm__ __volatile__( - "sidt (%0);" - : - : "q"(&tmp_seg) - : "memory" - ); - vmx_state->host_state.idtr.base = tmp_seg.base; - - __asm__ __volatile__( - "str (%0);" - : - : "q"(&tmp_seg) - : "memory" - ); - vmx_state->host_state.tr.selector = tmp_seg.selector; - - /* The GDTR *index* is bits 3-15 of the selector. */ - struct tss_descriptor * desc = NULL; - desc = (struct tss_descriptor *)(gdtr_base + (8 * (tmp_seg.selector >> 3))); - - tmp_seg.base = ((desc->base1) | - (desc->base2 << 16) | - (desc->base3 << 24) | -#ifdef __V3_64BIT__ - ((uint64_t)desc->base4 << 32) -#else - (0) -#endif - ); - - vmx_state->host_state.tr.base = tmp_seg.base; /********** Setup VMX Control Fields ***********/ @@ -207,10 +166,6 @@ static int init_vmcs_bios(struct guest_info * core, struct vmx_data * vmx_state) - - - - #ifdef __V3_64BIT__ // Ensure host runs in 64-bit mode at each VM EXIT vmx_state->exit_ctrls.host_64_on = 1; @@ -557,6 +512,63 @@ int v3_deinit_vmx_vmcs(struct guest_info * core) { } + +#ifdef V3_CONFIG_CHECKPOINT +/* + * JRL: This is broken + */ +int v3_vmx_save_core(struct guest_info * core, void * ctx){ + uint64_t vmcs_ptr = vmcs_store(); + + v3_chkpt_save(ctx, "vmcs_data", PAGE_SIZE, (void *)vmcs_ptr); + + return 0; +} + +int v3_vmx_load_core(struct guest_info * core, void * ctx){ + struct vmx_data * vmx_info = (struct vmx_data *)(core->vmm_data); + struct cr0_32 * shadow_cr0; + char vmcs[PAGE_SIZE_4KB]; + + v3_chkpt_load(ctx, "vmcs_data", PAGE_SIZE_4KB, vmcs); + + vmcs_clear(vmx_info->vmcs_ptr_phys); + vmcs_load((addr_t)vmcs); + + v3_vmx_save_vmcs(core); + + shadow_cr0 = (struct cr0_32 *)&(core->ctrl_regs.cr0); + + + /* Get the CPU mode to set the guest_ia32e entry ctrl */ + + if (core->shdw_pg_mode == SHADOW_PAGING) { + if (v3_get_vm_mem_mode(core) == VIRTUAL_MEM) { + if (v3_activate_shadow_pt(core) == -1) { + PrintError("Failed to activate shadow page tables\n"); + return -1; + } + } else { + if (v3_activate_passthrough_pt(core) == -1) { + PrintError("Failed to activate passthrough page tables\n"); + return -1; + } + } + } + + return 0; +} +#endif + + +void v3_flush_vmx_vm_core(struct guest_info * core) { + struct vmx_data * vmx_info = (struct vmx_data *)(core->vmm_data); + vmcs_clear(vmx_info->vmcs_ptr_phys); + vmx_info->state = VMX_UNLAUNCHED; +} + + + static int update_irq_exit_state(struct guest_info * info) { struct vmx_exit_idt_vec_info idt_vec_info; @@ -788,7 +800,6 @@ int v3_vmx_enter(struct guest_info * info) { check_vmcs_write(VMCS_TSC_OFFSET_HIGH, tsc_offset_high); check_vmcs_write(VMCS_TSC_OFFSET, tsc_offset_low); - if (v3_update_vmcs_host_state(info)) { v3_enable_ints(); PrintError("Could not write host state\n"); @@ -806,19 +817,22 @@ int v3_vmx_enter(struct guest_info * info) { ret = v3_vmx_resume(&(info->vm_regs), info, &(info->ctrl_regs)); } + + // PrintDebug("VMX Exit: ret=%d\n", ret); if (ret != VMX_SUCCESS) { uint32_t error = 0; - vmcs_read(VMCS_INSTR_ERR, &error); v3_enable_ints(); - PrintError("VMENTRY Error: %d\n", error); + PrintError("VMENTRY Error: %d (launch_ret = %d)\n", error, ret); return -1; } + + // Immediate exit from VM time bookkeeping v3_time_exit_vm(info); @@ -875,7 +889,7 @@ int v3_vmx_enter(struct guest_info * info) { v3_yield_cond(info); if (v3_handle_vmx_exit(info, &exit_info) == -1) { - PrintError("Error in VMX exit handler\n"); + PrintError("Error in VMX exit handler (Exit reason=%x)\n", exit_info.exit_reason); return -1; } @@ -900,6 +914,9 @@ int v3_start_vmx_guest(struct guest_info * info) { } PrintDebug("VMX core %u initialized\n", info->vcpu_id); + + // We'll be paranoid about race conditions here + v3_wait_at_barrier(info); } @@ -920,11 +937,40 @@ int v3_start_vmx_guest(struct guest_info * info) { } if (v3_vmx_enter(info) == -1) { + + addr_t host_addr; + addr_t linear_addr = 0; + + info->vm_info->run_state = VM_ERROR; + + V3_Print("VMX core %u: VMX ERROR!!\n", info->vcpu_id); + + v3_print_guest_state(info); + + V3_Print("VMX core %u\n", info->vcpu_id); + + 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("VMX core %u: Host Address of rip = 0x%p\n", info->vcpu_id, (void *)host_addr); + + V3_Print("VMX 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); + + v3_print_vmcs(); print_exit_log(info); return -1; } + v3_wait_at_barrier(info); if (info->vm_info->run_state == VM_STOPPED) {