Palacios Public Git Repository

To checkout Palacios execute

  git clone http://v3vee.org/palacios/palacios.web/palacios.git
This will give you the master branch. You probably want the devel branch or one of the release branches. To switch to the devel branch, simply execute
  cd palacios
  git checkout --track -b devel origin/devel
The other branches are similar.


checkpoint changes to get "reset to BIOS" working.
[palacios.git] / palacios / src / palacios / vm_guest.c
index e295c1a..72f980c 100644 (file)
@@ -28,7 +28,9 @@
 #include <palacios/vm_guest_mem.h>
 #include <palacios/vmm_lowlevel.h>
 #include <palacios/vmm_sprintf.h>
-
+#include <palacios/vmm_xed.h>
+#include <palacios/vmm_direct_paging.h>
+#include <palacios/vmm_barrier.h>
 
 
 v3_cpu_mode_t v3_get_vm_cpu_mode(struct guest_info * info) {
@@ -198,7 +200,7 @@ int v3_translate_segment(struct guest_info * info, uint16_t selector, struct v3_
        return -1;
     }
 
-    if (guest_va_to_host_va(info, gdt->base, &gdt_addr) == -1) {
+    if (v3_gva_to_hva(info, gdt->base, &gdt_addr) == -1) {
        PrintError("Unable to translate GDT address\n");
        return -1;
     }
@@ -249,13 +251,66 @@ void v3_print_ctrl_regs(struct guest_info * info) {
     V3_Print("32 bit Ctrl Regs:\n");
 
     for (i = 0; reg_names[i] != NULL; i++) {
-       V3_Print("\t%s=0x%p\n", reg_names[i], (void *)(addr_t)reg_ptr[i]);  
+       V3_Print("\t%s=0x%p (at %p)\n", reg_names[i], (void *)(addr_t)reg_ptr[i], &(reg_ptr[i]));  
     }
 
     V3_Print("\tEFER=0x%p\n", (void*)(addr_t)(guest_state->efer));
 
 }
 
+#if 0
+static int safe_gva_to_hva(struct guest_info * info, addr_t linear_addr, addr_t * host_addr) {
+    /* select the proper translation based on guest mode */
+    if (info->mem_mode == PHYSICAL_MEM) {
+       if (v3_gpa_to_hva(info, linear_addr, host_addr) == -1) return -1;
+    } else if (info->mem_mode == VIRTUAL_MEM) {
+       if (v3_gva_to_hva(info, linear_addr, host_addr) == -1) return -1;
+    }
+    return 0;
+}
+
+static int v3_print_disassembly(struct guest_info * info) {
+    int passed_rip = 0;
+    addr_t rip, rip_linear, rip_host;
+
+    /* we don't know where the instructions preceding RIP start, so we just take
+     * a guess and hope the instruction stream synced up with our disassembly
+     * some time before RIP; if it has not we correct RIP at that point
+     */
+
+    /* start disassembly 64 bytes before current RIP, continue 32 bytes after */
+    rip = (addr_t) info->rip - 64;
+    while ((int) (rip - info->rip) < 32) {
+       V3_Print("disassembly step\n");
+
+       /* always print RIP, even if the instructions before were bad */
+       if (!passed_rip && rip >= info->rip) {
+           if (rip != info->rip) {
+               V3_Print("***** bad disassembly up to this point *****\n");
+               rip = info->rip;
+           }
+           passed_rip = 1;
+       }
+
+       /* look up host virtual address for this instruction */
+       rip_linear = get_addr_linear(info, rip, &(info->segments.cs));
+       if (safe_gva_to_hva(info, rip_linear, &rip_host) < 0) {
+           rip++;
+           continue;
+       }
+
+       /* print disassembled instrcution (updates rip) */
+       if (v3_disasm(info, (void *) rip_host, &rip, rip == info->rip) < 0) {
+           rip++;
+           continue;
+       }
+
+    }
+
+    return 0;
+}
+
+#endif
 
 void v3_print_guest_state(struct guest_info * info) {
     addr_t linear_addr = 0; 
@@ -266,6 +321,14 @@ void v3_print_guest_state(struct guest_info * info) {
 
     V3_Print("NumExits: %u\n", (uint32_t)info->num_exits);
 
+    V3_Print("IRQ STATE: started=%d, pending=%d\n", 
+            info->intr_core_state.irq_started, 
+            info->intr_core_state.irq_pending);
+    V3_Print("EXCP STATE: err_code_valid=%d, err_code=%x\n", 
+            info->excp_state.excp_error_code_valid, 
+            info->excp_state.excp_error_code);
+
+
     v3_print_segments(&(info->segments));
     v3_print_ctrl_regs(info);
 
@@ -278,9 +341,67 @@ void v3_print_guest_state(struct guest_info * info) {
     }
     v3_print_GPRs(info);
 
+    v3_print_mem_map(info->vm_info);
+
     v3_print_stack(info);
+
+    //  v3_print_disassembly(info);
+}
+
+void v3_print_guest_state_all(struct v3_vm_info * vm) {
+    int i = 0;
+
+    V3_Print("VM Core states for %s\n", vm->name);
+
+    for (i = 0; i < 80; i++) {
+       V3_Print("-");
+    }
+
+    for (i = 0; i < vm->num_cores; i++) {
+       v3_print_guest_state(&vm->cores[i]);  
+    }
+    
+    for (i = 0; i < 80; i++) {
+       V3_Print("-");
+    }
+
+    V3_Print("\n");    
 }
 
+static void print_real_mode_stack(struct guest_info *info)
+{
+    uint16_t ss;
+    uint16_t sp;
+    addr_t   addr;
+    addr_t   host_addr;
+    int      i;
+
+
+    ss = info->segments.ss.selector & 0xffff;
+    sp = info->vm_regs.rsp & 0xffff;
+    addr = (((uint32_t)ss)<<4) + sp;
+
+   
+    V3_Print("Real Mode Stack starting at 0x%x:0x%x (0x%p):\n",ss,sp,(void*)addr);
+
+    if (info->mem_mode!=PHYSICAL_MEM) {
+       PrintError("Cannot print real mode stack when virtual memory active\n");
+       return;
+    }
+       
+    for (i=0;i<=24;i++,sp+=2) { 
+       // note that it's correct for this to wrap around
+       addr = (((uint32_t)ss)<<4) + sp;
+       if (v3_gpa_to_hva(info,addr,&host_addr)) { 
+           PrintError("Could not translate physical stack address 0x%p\n",(void*)addr);
+           return;
+       }
+       V3_Print("\t0x%.4x\n",*((uint16_t*)host_addr));
+    }
+}
+       
+
+
 
 void v3_print_stack(struct guest_info * info) {
     addr_t linear_addr = 0;
@@ -289,17 +410,24 @@ void v3_print_stack(struct guest_info * info) {
     v3_cpu_mode_t cpu_mode = v3_get_vm_cpu_mode(info);
 
 
+    if (cpu_mode==REAL) { 
+       print_real_mode_stack(info);
+       return;
+    }
+
+    // protected mode, 32 or 64 bit
+
     linear_addr = get_addr_linear(info, info->vm_regs.rsp, &(info->segments.ss));
  
-    V3_Print("Stack  at %p:\n", (void *)linear_addr);
+    V3_Print("Stack at %p:\n", (void *)linear_addr);
    
     if (info->mem_mode == PHYSICAL_MEM) {
-       if (guest_pa_to_host_va(info, linear_addr, &host_addr) == -1) {
+       if (v3_gpa_to_hva(info, linear_addr, &host_addr) == -1) {
            PrintError("Could not translate Stack address\n");
            return;
        }
     } else if (info->mem_mode == VIRTUAL_MEM) {
-       if (guest_va_to_host_va(info, linear_addr, &host_addr) == -1) {
+       if (v3_gva_to_hva(info, linear_addr, &host_addr) == -1) {
            PrintError("Could not translate Virtual Stack address\n");
            return;
        }
@@ -311,8 +439,6 @@ void v3_print_stack(struct guest_info * info) {
     for (i = 0; i <= 24; i++) {
        if (cpu_mode == LONG) {
            V3_Print("\t%p\n", (void *)*(addr_t *)(host_addr + (i * 8)));
-       } else if (cpu_mode == REAL) {
-           V3_Print("Don't currently handle 16 bit stacks... \n");
        } else {
            // 32 bit stacks...
            V3_Print("\t%.8x\n", *(uint32_t *)(host_addr + (i * 4)));
@@ -329,12 +455,12 @@ void v3_print_GPRs(struct guest_info * info) {
     v3_reg_t * reg_ptr;
     char * reg_names[] = { "RDI", "RSI", "RBP", "RSP", "RBX", "RDX", "RCX", "RAX", NULL};
 
-    reg_ptr= (v3_reg_t *)regs;
+    reg_ptr = (v3_reg_t *)regs;
 
     V3_Print("32 bit GPRs:\n");
 
     for (i = 0; reg_names[i] != NULL; i++) {
-       V3_Print("\t%s=0x%p\n", reg_names[i], (void *)(addr_t)reg_ptr[i]);  
+       V3_Print("\t%s=0x%p (at %p)\n", reg_names[i], (void *)(addr_t)reg_ptr[i], &(reg_ptr[i]));  
     }
 }
 
@@ -352,7 +478,7 @@ void v3_print_GPRs(struct guest_info * info) {
     V3_Print("64 bit GPRs:\n");
 
     for (i = 0; reg_names[i] != NULL; i++) {
-       V3_Print("\t%s=0x%p\n", reg_names[i], (void *)(addr_t)reg_ptr[i]);  
+       V3_Print("\t%s=0x%p (at %p)\n", reg_names[i], (void *)(addr_t)reg_ptr[i], &(reg_ptr[i]));  
     }
 }
 
@@ -362,24 +488,27 @@ void v3_print_GPRs(struct guest_info * info) {
 #include <palacios/vmcs.h>
 #include <palacios/vmcb.h>
 static int info_hcall(struct guest_info * core, uint_t hcall_id, void * priv_data) {
-    v3_cpu_arch_t cpu_type = v3_get_cpu_type(v3_get_cpu_id());
-    
+    v3_cpu_arch_t cpu_type = v3_get_cpu_type(V3_Get_CPU());
+    int cpu_valid = 0;
+
+    V3_Print("************** Guest State ************\n");
     v3_print_guest_state(core);
     
-
     // init SVM/VMX
-#ifdef CONFIG_SVM
+#ifdef V3_CONFIG_SVM
     if ((cpu_type == V3_SVM_CPU) || (cpu_type == V3_SVM_REV3_CPU)) {
+       cpu_valid = 1;
        PrintDebugVMCB((vmcb_t *)(core->vmm_data));
     }
 #endif
-#ifdef CONFIG_VMX
-    else if ((cpu_type == V3_VMX_CPU) || (cpu_type == V3_VMX_EPT_CPU)) {
+#ifdef V3_CONFIG_VMX
+    if ((cpu_type == V3_VMX_CPU) || (cpu_type == V3_VMX_EPT_CPU) || (cpu_type == V3_VMX_EPT_UG_CPU)) {
+       cpu_valid = 1;
        v3_print_vmcs();
     }
 #endif
-    else {
-       PrintError("Invalid CPU Type\n");
+    if (!cpu_valid) {
+       PrintError("Invalid CPU Type 0x%x\n", cpu_type);
        return -1;
     }
     
@@ -388,13 +517,13 @@ static int info_hcall(struct guest_info * core, uint_t hcall_id, void * priv_dat
 }
 
 
-#ifdef CONFIG_SVM
+#ifdef V3_CONFIG_SVM
 #include <palacios/svm.h>
 #include <palacios/svm_io.h>
 #include <palacios/svm_msr.h>
 #endif
 
-#ifdef CONFIG_VMX
+#ifdef V3_CONFIG_VMX
 #include <palacios/vmx.h>
 #include <palacios/vmx_io.h>
 #include <palacios/vmx_msr.h>
@@ -402,9 +531,11 @@ static int info_hcall(struct guest_info * core, uint_t hcall_id, void * priv_dat
 
 
 int v3_init_vm(struct v3_vm_info * vm) {
-    v3_cpu_arch_t cpu_type = v3_get_cpu_type(v3_get_cpu_id());
+    v3_cpu_arch_t cpu_type = v3_get_cpu_type(V3_Get_CPU());
+
 
-#ifdef CONFIG_TELEMETRY
+
+#ifdef V3_CONFIG_TELEMETRY
     v3_init_telemetry(vm);
 #endif
 
@@ -414,6 +545,9 @@ int v3_init_vm(struct v3_vm_info * vm) {
     v3_init_cpuid_map(vm);
     v3_init_host_events(vm);
     v3_init_intr_routers(vm);
+    v3_init_ext_manager(vm);
+
+    v3_init_barrier(vm);
 
     // Initialize the memory map
     if (v3_init_mem_map(vm) == -1) {
@@ -421,95 +555,226 @@ int v3_init_vm(struct v3_vm_info * vm) {
        return -1;
     }
 
-#ifdef CONFIG_SYMBIOTIC
-    v3_init_sym_iface(vm);
+    v3_init_mem_hooks(vm);
+
+    if (v3_init_shdw_impl(vm) == -1) {
+       PrintError("VM initialization error in shadow implementaion\n");
+       return -1;
+    }
+
+
+    v3_init_time_vm(vm);
+
+
+#ifdef V3_CONFIG_SYMBIOTIC
+    v3_init_symbiotic_vm(vm);
 #endif
 
     v3_init_dev_mgr(vm);
 
 
-#ifdef CONFIG_SYMBIOTIC_SWAP
-    PrintDebug("initializing symbiotic swap\n");
-    v3_init_sym_swap(vm);
+    // init SVM/VMX
+    switch (cpu_type) {
+#ifdef V3_CONFIG_SVM
+       case V3_SVM_CPU:
+       case V3_SVM_REV3_CPU:
+           v3_init_svm_io_map(vm);
+           v3_init_svm_msr_map(vm);
+           break;
 #endif
+#ifdef V3_CONFIG_VMX
+       case V3_VMX_CPU:
+       case V3_VMX_EPT_CPU:
+       case V3_VMX_EPT_UG_CPU:
+           v3_init_vmx_io_map(vm);
+           v3_init_vmx_msr_map(vm);
+           break;
+#endif
+       default:
+           PrintError("Invalid CPU Type 0x%x\n", cpu_type);
+           return -1;
+    }
+    
+    v3_register_hypercall(vm, GUEST_INFO_HCALL, info_hcall, NULL);
+
+    V3_Print("GUEST_INFO_HCALL=%x\n", GUEST_INFO_HCALL);
+
+    return 0;
+}
+
+
+int v3_free_vm_internal(struct v3_vm_info * vm) {
+    v3_cpu_arch_t cpu_type = v3_get_cpu_type(V3_Get_CPU());
+
+    v3_remove_hypercall(vm, GUEST_INFO_HCALL);
 
 
 
+#ifdef V3_CONFIG_SYMBIOTIC
+    v3_deinit_symbiotic_vm(vm);
+#endif
+
     // init SVM/VMX
-#ifdef CONFIG_SVM
-    if ((cpu_type == V3_SVM_CPU) || (cpu_type == V3_SVM_REV3_CPU)) {
-       v3_init_svm_io_map(vm);
-       v3_init_svm_msr_map(vm);
-    }
+    switch (cpu_type) {
+#ifdef V3_CONFIG_SVM
+       case V3_SVM_CPU:
+       case V3_SVM_REV3_CPU:
+           v3_deinit_svm_io_map(vm);
+           v3_deinit_svm_msr_map(vm);
+           break;
 #endif
-#ifdef CONFIG_VMX
-    else if ((cpu_type == V3_VMX_CPU) || (cpu_type == V3_VMX_EPT_CPU)) {
-       v3_init_vmx_io_map(vm);
-       v3_init_vmx_msr_map(vm);
-    }
+#ifdef V3_CONFIG_VMX
+       case V3_VMX_CPU:
+       case V3_VMX_EPT_CPU:
+       case V3_VMX_EPT_UG_CPU:
+           v3_deinit_vmx_io_map(vm);
+           v3_deinit_vmx_msr_map(vm);
+           break;
 #endif
-    else {
-       PrintError("Invalid CPU Type\n");
-       return -1;
+       default:
+           PrintError("Invalid CPU Type 0x%x\n", cpu_type);
+           return -1;
     }
-    
 
+    v3_deinit_dev_mgr(vm);
 
-    v3_register_hypercall(vm, GUEST_INFO_HCALL, info_hcall, NULL);
+    v3_deinit_time_vm(vm);
+
+    v3_deinit_mem_hooks(vm);
+    v3_delete_mem_map(vm);
+    v3_deinit_shdw_impl(vm);
+
+    v3_deinit_intr_routers(vm);
+    v3_deinit_host_events(vm);
+
+    v3_deinit_barrier(vm);
+
+    v3_deinit_cpuid_map(vm);
+    v3_deinit_msr_map(vm);
+    v3_deinit_io_map(vm);
+    v3_deinit_hypercall_map(vm);
+
+#ifdef V3_CONFIG_TELEMETRY
+    v3_deinit_telemetry(vm);
+#endif
 
 
-    V3_Print("GUEST_INFO_HCALL=%x\n", GUEST_INFO_HCALL);
 
     return 0;
 }
 
+
 int v3_init_core(struct guest_info * core) {
-    v3_cpu_arch_t cpu_type = v3_get_cpu_type(v3_get_cpu_id());
+    v3_cpu_arch_t cpu_type = v3_get_cpu_type(V3_Get_CPU());
     struct v3_vm_info * vm = core->vm_info;
 
+
+
     /*
      * Initialize the subsystem data strutures
      */
-#ifdef CONFIG_TELEMETRY
+#ifdef V3_CONFIG_TELEMETRY
     v3_init_core_telemetry(core);
 #endif
 
     if (core->shdw_pg_mode == SHADOW_PAGING) {
-       v3_init_shadow_page_state(core);
+       v3_init_shdw_pg_state(core);
     }
 
-    v3_init_time(core);
+    v3_init_time_core(core);
     v3_init_intr_controllers(core);
     v3_init_exception_state(core);
 
     v3_init_decoder(core);
 
 
-#ifdef CONFIG_SYMBIOTIC
-    v3_init_sym_core(core);
+#ifdef V3_CONFIG_SYMBIOTIC
+    v3_init_symbiotic_core(core);
 #endif
 
     // init SVM/VMX
-#ifdef CONFIG_SVM
-    if ((cpu_type == V3_SVM_CPU) || (cpu_type == V3_SVM_REV3_CPU)) {
-       if (v3_init_svm_vmcb(core, vm->vm_class) == -1) {
-           PrintError("Error in SVM initialization\n");
+
+
+    switch (cpu_type) {
+#ifdef V3_CONFIG_SVM
+       case V3_SVM_CPU:
+       case V3_SVM_REV3_CPU:
+           if (v3_init_svm_vmcb(core, vm->vm_class) == -1) {
+               PrintError("Error in SVM initialization\n");
+               return -1;
+           }
+           break;
+#endif
+#ifdef V3_CONFIG_VMX
+       case V3_VMX_CPU:
+       case V3_VMX_EPT_CPU:
+       case V3_VMX_EPT_UG_CPU:
+           if (v3_init_vmx_vmcs(core, vm->vm_class) == -1) {
+               PrintError("Error in VMX initialization\n");
+               return -1;
+           }
+           break;
+#endif
+       default:
+           PrintError("Invalid CPU Type 0x%x\n", cpu_type);
            return -1;
-       }
     }
+
+    return 0;
+}
+
+
+
+int v3_free_core(struct guest_info * core) {
+    v3_cpu_arch_t cpu_type = v3_get_cpu_type(V3_Get_CPU());
+
+    
+#ifdef V3_CONFIG_SYMBIOTIC
+    v3_deinit_symbiotic_core(core);
 #endif
-#ifdef CONFIG_VMX
-    else if ((cpu_type == V3_VMX_CPU) || (cpu_type == V3_VMX_EPT_CPU)) {
-       if (v3_init_vmx_vmcs(core, vm->vm_class) == -1) {
-           PrintError("Error in VMX initialization\n");
-           return -1;
-       }
+
+    v3_deinit_decoder(core);
+
+    v3_deinit_intr_controllers(core);
+    v3_deinit_time_core(core);
+
+    if (core->shdw_pg_mode == SHADOW_PAGING) {
+       v3_deinit_shdw_pg_state(core);
     }
+
+    v3_free_passthrough_pts(core);
+
+#ifdef V3_CONFIG_TELEMETRY
+    v3_deinit_core_telemetry(core);
 #endif
-    else {
-       PrintError("Invalid CPU Type\n");
-       return -1;
+
+    switch (cpu_type) {
+#ifdef V3_CONFIG_SVM
+       case V3_SVM_CPU:
+       case V3_SVM_REV3_CPU:
+           if (v3_deinit_svm_vmcb(core) == -1) {
+               PrintError("Error in SVM initialization\n");
+               return -1;
+           }
+           break;
+#endif
+#ifdef V3_CONFIG_VMX
+       case V3_VMX_CPU:
+       case V3_VMX_EPT_CPU:
+       case V3_VMX_EPT_UG_CPU:
+           if (v3_deinit_vmx_vmcs(core) == -1) {
+               PrintError("Error in VMX initialization\n");
+               return -1;
+           }
+           break;
+#endif
+       default:
+           PrintError("Invalid CPU Type 0x%x\n", cpu_type);
+           return -1;
     }
 
     return 0;
 }
+
+
+