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.


Merge branch 'devel' of ssh://palacios@newskysaw.cs.northwestern.edu//home/palacios...
[palacios.git] / palacios / src / palacios / vmm_config.c
index fb4c5e3..c2c8c57 100644 (file)
@@ -1,4 +1,4 @@
-/* 
+ /* 
  * 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.  
 #include <palacios/vmm_debug.h>
 #include <palacios/vmm_msr.h>
 #include <palacios/vmm_decoder.h>
-#include <palacios/vmm_profiler.h>
+#include <palacios/vmm_telemetry.h>
 #include <palacios/vmm_mem.h>
 #include <palacios/vmm_hypercall.h>
+#include <palacios/vmm_dev_mgr.h>
+#include <palacios/vmm_cpuid.h>
+#include <palacios/vmm_xml.h>
+#include <palacios/vmm_io.h>
+#include <palacios/vmm_msr.h>
+#include <palacios/vmm_mptable.h>
+
+
 
 
-#include <devices/serial.h>
-#include <devices/keyboard.h>
-#include <devices/8259a.h>
-#include <devices/8254.h>
-#include <devices/nvram.h>
-#include <devices/generic.h>
-#include <devices/ide.h>
-#include <devices/ram_cd.h>
-#include <devices/ram_hd.h>
-#include <devices/bochs_debug.h>
-#include <devices/os_debug.h>
-#include <devices/apic.h>
-#include <devices/io_apic.h>
-#include <devices/para_net.h>
-#include <devices/pci.h>
-#include <devices/i440fx.h>
-#include <devices/piix3.h>
 
 
 #include <palacios/vmm_host_events.h>
+#include <palacios/vmm_socket.h>
 
-#define USE_GENERIC 1
+#include "vmm_config_class.h"
 
+// This is used to access the configuration file index table
+struct file_hdr {
+    uint32_t index;
+    uint32_t size;
+    uint64_t offset;
+};
 
+struct file_idx_table {
+    uint64_t num_files;
+    struct file_hdr hdrs[0];
+};
 
 
 
-static int setup_memory_map(struct guest_info * info, struct v3_vm_config * config_ptr);
-static struct vm_device *  configure_generic(struct guest_info * info, struct v3_vm_config * config_ptr);
 
+static int setup_memory_map(struct v3_vm_info * vm, v3_cfg_tree_t * cfg);
+static int setup_devices(struct v3_vm_info * vm, v3_cfg_tree_t * cfg);
 
 
 
-static int passthrough_mem_write(addr_t guest_addr, void * src, uint_t length, void * priv_data) {
+char * v3_cfg_val(v3_cfg_tree_t * tree, char * tag) {
+    char * attrib = (char *)v3_xml_attr(tree, tag);
+    v3_cfg_tree_t * child_entry = v3_xml_child(tree, tag);
+    char * val = NULL;
 
-    return length;
-    //  memcpy((void*)guest_addr, src, length);
-    PrintDebug("Write of %d bytes to %p\n", length, (void *)guest_addr);
-    PrintDebug("Write Value = %p\n", (void *)*(addr_t *)src);
-    
-    return length;
+    if ((child_entry != NULL) && (attrib != NULL)) {
+       PrintError("Duplicate Configuration parameters present for %s\n", tag);
+       return NULL;
+    }
+
+    val = (attrib == NULL) ? v3_xml_txt(child_entry): attrib;
+
+    return val; 
+}
+
+v3_cfg_tree_t * v3_cfg_subtree(v3_cfg_tree_t * tree, char * tag) {
+    return v3_xml_child(tree, tag);
 }
 
+v3_cfg_tree_t * v3_cfg_next_branch(v3_cfg_tree_t * tree) {
+    return v3_xml_next(tree);
+}
 
 
-int v3_config_guest(struct guest_info * info, struct v3_vm_config * config_ptr) {
-    extern v3_cpu_arch_t v3_cpu_type;
 
-    // Amount of ram the Guest will have, rounded to a 4K page boundary
-    info->mem_size = config_ptr->mem_size & ~(addr_t)0xfff;
+struct v3_cfg_file * v3_cfg_get_file(struct v3_vm_info * vm, char * tag) {
+    struct v3_cfg_file * file = NULL;
 
+    file = (struct v3_cfg_file *)v3_htable_search(vm->cfg_data->file_table, (addr_t)tag);
 
-    // Initialize the subsystem data strutures
-    v3_init_time(info);
-    v3_init_io_map(info);
-    v3_init_msr_map(info);
-    v3_init_interrupt_state(info);
-    v3_init_exception_state(info);
-    v3_init_dev_mgr(info);
-    v3_init_host_events(info);
+    return file;
+}
 
 
-    v3_init_decoder(info);
-    
-    v3_init_hypercall_map(info);
+static uint_t file_hash_fn(addr_t key) {
+    char * name = (char *)key;
+    return v3_hash_buffer((uchar_t *)name, strlen(name));
+}
 
+static int file_eq_fn(addr_t key1, addr_t key2) {
+    char * name1 = (char *)key1;
+    char * name2 = (char *)key2;
 
-    // Initialize the memory map
-    v3_init_shadow_map(info);
-    
+    return (strcmp(name1, name2) == 0);
+}
+
+static struct v3_config * parse_config(void * cfg_blob) {
+    struct v3_config * cfg = NULL;
+    int offset = 0;
+    uint_t xml_len = 0; 
+    struct file_idx_table * files = NULL;
+    v3_cfg_tree_t * file_tree = NULL;
+
+    V3_Print("cfg data at %p\n", cfg_blob);
+
+    if (memcmp(cfg_blob, "v3vee\0\0\0", 8) != 0) {
+       PrintError("Invalid Configuration Header\n");
+       return NULL;
+    }
+
+    offset += 8;
+
+    cfg = (struct v3_config *)V3_Malloc(sizeof(struct v3_config));
+    memset(cfg, 0, sizeof(struct v3_config));
+
+    cfg->blob = cfg_blob;
+    INIT_LIST_HEAD(&(cfg->file_list));
+    cfg->file_table = v3_create_htable(0, file_hash_fn, file_eq_fn);
     
-    if ((v3_cpu_type == V3_SVM_REV3_CPU) && 
-       (config_ptr->enable_nested_paging == 1)) {
-       PrintDebug("Guest Page Mode: NESTED_PAGING\n");
-       info->shdw_pg_mode = NESTED_PAGING;
-    } else {
-       PrintDebug("Guest Page Mode: SHADOW_PAGING\n");
-       v3_init_shadow_page_state(info);
-       info->shdw_pg_mode = SHADOW_PAGING;
+    xml_len = *(uint32_t *)(cfg_blob + offset);
+    offset += 4;
+
+    cfg->cfg = (v3_cfg_tree_t *)v3_xml_parse((uint8_t *)(cfg_blob + offset));
+    offset += xml_len;
+   
+    offset += 8;
+
+    files = (struct file_idx_table *)(cfg_blob + offset);
+
+    V3_Print("Number of files in cfg: %d\n", (uint32_t)(files->num_files));
+
+    file_tree = v3_cfg_subtree(v3_cfg_subtree(cfg->cfg, "files"), "file");
+
+    while (file_tree) {
+       char * id = v3_cfg_val(file_tree, "id");
+       char * index = v3_cfg_val(file_tree, "index");
+       int idx = atoi(index);
+       struct file_hdr * hdr = &(files->hdrs[idx]);
+       struct v3_cfg_file * file = NULL;
+
+       file = (struct v3_cfg_file *)V3_Malloc(sizeof(struct v3_cfg_file));
+       
+       if (!file) {
+           PrintError("Could not allocate file structure\n");
+           return NULL;
+       }
+
+
+       V3_Print("File index=%d id=%s\n", idx, id);
+
+       strncpy(file->tag, id, 256);
+       file->size = hdr->size;
+       file->data = cfg_blob + hdr->offset;
+
+       V3_Print("Storing file data offset = %d, size=%d\n", (uint32_t)hdr->offset, hdr->size);
+       V3_Print("file data at %p\n", file->data);
+       list_add( &(file->file_node), &(cfg->file_list));
+
+       V3_Print("Keying file to name\n");
+       v3_htable_insert(cfg->file_table, (addr_t)(file->tag), (addr_t)(file));
+
+       V3_Print("Iterating to next file\n");
+
+       file_tree = v3_cfg_next_branch(file_tree);
+    }
+
+    V3_Print("Configuration parsed successfully\n");
+
+    return cfg;
+}
+
+
+static inline uint32_t get_alignment(char * align_str) {
+    // default is 4KB alignment
+    uint32_t alignment = PAGE_SIZE_4KB;
+
+    if (align_str != NULL) {
+       if (strcasecmp(align_str, "2MB") == 0) {
+           alignment = PAGE_SIZE_2MB;
+       } else if (strcasecmp(align_str, "4MB") == 0) {
+           alignment = PAGE_SIZE_4MB;
+       }
     }
     
-    // Initial CPU operating mode
-    info->cpu_mode = REAL;
-    info->mem_mode = PHYSICAL_MEM;
+#ifndef CONFIG_ALIGNED_PG_ALLOC
+    if (alignment != PAGE_SIZE_4KB) {
+       PrintError("Aligned page allocations are not supported in this host (requested alignment=%d)\n", alignment);
+       PrintError("Ignoring alignment request\n");
+    }
+#endif 
+
+    return alignment;
+}
+static int pre_config_vm(struct v3_vm_info * vm, v3_cfg_tree_t * vm_cfg) {
+
+
+    char * memory_str = v3_cfg_val(vm_cfg, "memory");
+    char * schedule_hz_str = v3_cfg_val(vm_cfg, "schedule_hz");
+    char * vm_class = v3_cfg_val(vm_cfg, "class");
+    char * align_str = v3_cfg_val(v3_cfg_subtree(vm_cfg, "memory"), "alignment");
+    uint32_t sched_hz = 100;   // set the schedule frequency to 100 HZ
     
-    // Configure the memory map for the guest
-    if (setup_memory_map(info, config_ptr) == -1) {
-       PrintError("Setting up guest memory map failed...\n");
+    if (!memory_str) {
+       PrintError("Memory is a required configuration parameter\n");
        return -1;
     }
     
+    PrintDebug("Memory=%s\n", memory_str);
+    if (align_str) {
+        PrintDebug("Alignment=%s\n", align_str);
+    } else {
+        PrintDebug("Alignment defaulted to 4KB.\n");
+    }
+
+    // Amount of ram the Guest will have, always in MB
+    vm->mem_size = atoi(memory_str) * 1024 * 1024;
+    vm->mem_align = get_alignment(align_str);
 
-    if (config_ptr->enable_profiling) {
-       info->enable_profiler = 1;
-       v3_init_profiler(info);
+    PrintDebug("Alignment computed as 0x%x\n", vm->mem_align);
+
+    if (strcasecmp(vm_class, "PC") == 0) {
+       vm->vm_class = V3_PC_VM;
     } else {
-       info->enable_profiler = 0;
+       PrintError("Invalid VM class\n");
+       return -1;
     }
 
-    //v3_hook_io_port(info, 1234, &IO_Read, NULL, info);
-    
-    // Setup initial cpu register state
-    info->rip = 0xfff0;
-    info->vm_regs.rsp = 0x0;
-  
+#ifdef CONFIG_TELEMETRY
+    {
+       char * telemetry = v3_cfg_val(vm_cfg, "telemetry");
+
+       // This should go first, because other subsystems will depend on the guest_info flag    
+       if ((telemetry) && (strcasecmp(telemetry, "enable") == 0)) {
+           vm->enable_telemetry = 1;
+       } else {
+           vm->enable_telemetry = 0;
+       }
+    }
+#endif
+
+    if (v3_init_vm(vm) == -1) {
+       PrintError("Failed to initialize VM\n");
+       return -1;
+    }
+
+
+
+   if (schedule_hz_str) {
+       sched_hz = atoi(schedule_hz_str);
+    }
+
+    PrintDebug("CPU_KHZ = %d, schedule_freq=%p\n", V3_CPU_KHZ(), 
+              (void *)(addr_t)sched_hz);
+
+    vm->yield_cycle_period = (V3_CPU_KHZ() * 1000) / sched_hz;
     
     return 0;
 }
 
+static int determine_paging_mode(struct guest_info *info, v3_cfg_tree_t * core_cfg)
+{
+    extern v3_cpu_arch_t v3_cpu_types[];
+
+    v3_cfg_tree_t *vm_tree = info->vm_info->cfg_data->cfg;
+    v3_cfg_tree_t *pg_tree = v3_cfg_subtree(vm_tree, "paging");
+    char *pg_mode          = v3_cfg_val(pg_tree, "mode");
+    char *page_size        = v3_cfg_val(pg_tree, "page_size");
+    
+    PrintDebug("Paging mode specified as %s\n", pg_mode);
+
+    if (pg_mode) {
+       if ((strcasecmp(pg_mode, "nested") == 0)) {
+           if (v3_cpu_types[info->cpu_id] == V3_SVM_REV3_CPU) {
+               info->shdw_pg_mode = NESTED_PAGING;
+           } else {
+               PrintError("Nested paging not supported on this hardware. Defaulting to shadow paging\n");
+               info->shdw_pg_mode = SHADOW_PAGING;
+           }
+       } else if ((strcasecmp(pg_mode, "shadow") == 0)) {
+           info->shdw_pg_mode = SHADOW_PAGING;
+       } else {
+           PrintError("Invalid paging mode (%s) specified in configuration. Defaulting to shadow paging\n", pg_mode);
+           info->shdw_pg_mode = SHADOW_PAGING;
+       }
+    } else {
+       PrintDebug("No paging type specified in configuration. Defaulting to shadow paging\n");
+       info->shdw_pg_mode = SHADOW_PAGING;
+    }
 
 
+    if (info->shdw_pg_mode == NESTED_PAGING) {
+       PrintDebug("Guest Paging Mode: NESTED_PAGING\n");
+       if (strcasecmp(page_size, "4kb") == 0) { /* TODO: this may not be an ideal place for this */
+           info->vm_info->paging_size = PAGING_4KB;
+       } else if (strcasecmp(page_size, "2mb") == 0) {
+           info->vm_info->paging_size = PAGING_2MB;
+       } else {
+           PrintError("Invalid VM paging size: '%s'\n", page_size);
+           return -1;
+       }
+       PrintDebug("VM page size=%s\n", page_size);
+    } else if (info->shdw_pg_mode == SHADOW_PAGING) {
+        PrintDebug("Guest Paging Mode: SHADOW_PAGING\n");
+    } else {
+       PrintError("Guest paging mode incorrectly set.\n");
+       return -1;
+    }
 
+    if (strcasecmp(v3_cfg_val(pg_tree, "large_pages"), "true") == 0) {
+       info->use_large_pages = 1;
+       PrintDebug("Use of large pages in memory virtualization enabled.\n");
+    }
 
-/* TODO:
- * The amount of guest memory is stored in info->mem_size
- * We need to make sure the memory map extends to cover it
- */
-static int setup_memory_map(struct guest_info * info, struct v3_vm_config * config_ptr) {
-    PrintDebug("Setting up memory map (memory size=%dMB)\n", (uint_t)(info->mem_size / (1024 * 1024)));
-    
-    // VGA frame buffer
-    if (1) {
-       if (v3_add_shadow_mem(info, 0xa0000, 0xc0000, 0xa0000) == -1) {
-           PrintError("Could not map VGA framebuffer\n");
+    return 0;
+}
+
+static int pre_config_core(struct guest_info * info, v3_cfg_tree_t * core_cfg) {
+
+    if (determine_paging_mode(info, core_cfg))
+       return -1;
+
+    v3_init_core(info);
+
+    if (info->vm_info->vm_class == V3_PC_VM) {
+       if (pre_config_pc_core(info, core_cfg) == -1) {
+           PrintError("PC Post configuration failure\n");
            return -1;
        }
     } else {
-       v3_hook_write_mem(info, 0xa0000, 0xc0000, 0xa0000,  passthrough_mem_write, NULL);
-    }  
+       PrintError("Invalid VM Class\n");
+       return -1;
+    }
+
+    return 0;
+}
 
-#define VGABIOS_START 0x000c0000
-#define ROMBIOS_START 0x000f0000
 
-    /* layout vgabios */
-    {
-       addr_t vgabios_dst = v3_get_shadow_addr(&(info->mem_map.base_region), VGABIOS_START);
-       memcpy(V3_VAddr((void *)vgabios_dst), config_ptr->vgabios, config_ptr->vgabios_size);   
+
+static int post_config_vm(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
+    
+    vm->run_state = VM_STOPPED;
+
+    // Configure the memory map for the guest
+    if (setup_memory_map(vm, cfg) == -1) {
+       PrintError("Setting up guest memory map failed...\n");
+       return -1;
     }
     
-    /* layout rombios */
-    {
-       addr_t rombios_dst = v3_get_shadow_addr(&(info->mem_map.base_region), ROMBIOS_START);
-       memcpy(V3_VAddr((void *)rombios_dst), config_ptr->rombios, config_ptr->rombios_size);
+    //v3_hook_io_port(info, 1234, &IO_Read, NULL, info);
+  
+    if (setup_devices(vm, cfg) == -1) {
+       PrintError("Failed to setup devices\n");
+       return -1;
     }
 
-#ifdef CRAY_XT
-    {
-#define SEASTAR_START 0xffe00000 
-#define SEASTAR_END 0xffffffff 
-       // Map the Seastar straight through
-       if (v3_add_shadow_mem(info, SEASTAR_START, SEASTAR_END, SEASTAR_START) == -1) {
-           PrintError("Could not map through the seastar\n");
+
+    //    v3_print_io_map(info);
+    v3_print_msr_map(vm);
+
+
+    if (vm->vm_class == V3_PC_VM) {
+       if (post_config_pc(vm, cfg) == -1) {
+           PrintError("PC Post configuration failure\n");
            return -1;
        }
+    } else {
+       PrintError("Invalid VM Class\n");
+       return -1;
     }
-#endif    
 
-    print_shadow_map(info);
+    if (v3_inject_mptable(vm)==-1) { 
+       PrintError("Failed to inject mptable during configuration\n");
+       return -1;
+    }
 
     return 0;
 }
 
 
 
-int v3_config_devices(struct guest_info * info, struct v3_vm_config * config_ptr) {
+static int post_config_core(struct guest_info * info, v3_cfg_tree_t * cfg) {
 
-    struct vm_device * ide = NULL;
-    struct vm_device * ramdisk = NULL;
-    
-    struct vm_device * pci = NULL;
-    struct vm_device * northbridge = NULL;
-    struct vm_device * southbridge = NULL;
 
-    struct vm_device * nvram = NULL;
-    struct vm_device * pic = v3_create_pic();
-    struct vm_device * keyboard = v3_create_keyboard();
-    struct vm_device * pit = v3_create_pit(); 
-    struct vm_device * bochs_debug = v3_create_bochs_debug();
-    struct vm_device * os_debug = v3_create_os_debug();
-    struct vm_device * apic = v3_create_apic();
-    struct vm_device * ioapic = v3_create_io_apic(apic);
-    struct vm_device * para_net = v3_create_para_net();
+    if (info->vm_info->vm_class == V3_PC_VM) {
+       if (post_config_pc_core(info, cfg) == -1) {
+           PrintError("PC Post configuration failure\n");
+           return -1;
+       }
+    } else {
+       PrintError("Invalid VM Class\n");
+       return -1;
+    }
+
+
+    return 0;
+}
+
 
 
-    //struct vm_device * serial = v3_create_serial();
-    struct vm_device * generic = NULL;
+static struct v3_vm_info * allocate_guest(int num_cores) {
+    int guest_state_size = sizeof(struct v3_vm_info) + (sizeof(struct guest_info) * num_cores);
+    struct v3_vm_info * vm = V3_Malloc(guest_state_size);
 
+    memset(vm, 0, guest_state_size);
 
-    int use_generic = USE_GENERIC;
+    vm->num_cores = num_cores;
 
-    if (config_ptr->enable_pci == 1) {
-       pci = v3_create_pci();
-       northbridge = v3_create_i440fx(pci);
-       southbridge = v3_create_piix3(pci);
-       ide = v3_create_ide(pci, southbridge);
-    } else {
-       ide = v3_create_ide(NULL, NULL);
+    return vm;
+}
+
+
+
+struct v3_vm_info * v3_config_guest(void * cfg_blob) {
+    v3_cpu_arch_t cpu_type = v3_get_cpu_type(v3_get_cpu_id());
+    struct v3_config * cfg_data = NULL;
+    struct v3_vm_info * vm = NULL;
+    int num_cores = 0;
+    int i = 0;
+    v3_cfg_tree_t * cores_cfg = NULL;
+    v3_cfg_tree_t * per_core_cfg = NULL;
+
+    if (cpu_type == V3_INVALID_CPU) {
+       PrintError("Configuring guest on invalid CPU\n");
+       return NULL;
     }
 
+    cfg_data = parse_config(cfg_blob);
 
+    if (!cfg_data) {
+       PrintError("Could not parse configuration\n");
+       return NULL;
+    }
 
-    nvram = v3_create_nvram(ide);
+    cores_cfg = v3_cfg_subtree(cfg_data->cfg, "cores");
 
-    if (config_ptr->use_ram_cd == 1) {
-       PrintDebug("Creating Ram CD\n");
-       ramdisk = v3_create_ram_cd(ide, 0, 0, 
-                                  (addr_t)(config_ptr->ramdisk), 
-                                  config_ptr->ramdisk_size);
-    } else if (config_ptr->use_ram_hd == 1) {
-       PrintDebug("Creating Ram HD\n");
-       ramdisk = v3_create_ram_hd(ide, 0, 0, 
-                                  (addr_t)(config_ptr->ramdisk), 
-                                  config_ptr->ramdisk_size);
+    if (!cores_cfg) {
+       PrintError("Could not find core configuration (new config format required)\n");
+       return NULL;
     }
-    
-    
-    if (use_generic) {
-       generic = configure_generic(info, config_ptr);
+
+    num_cores = atoi(v3_cfg_val(cores_cfg, "count"));
+
+    if (num_cores == 0) {
+       PrintError("No cores specified in configuration\n");
+       return NULL;
     }
 
+    V3_Print("Configuring %d cores\n", num_cores);
 
+    vm = allocate_guest(num_cores);    
 
+    if (!vm) {
+       PrintError("Could not allocate %d core guest\n", vm->num_cores);
+       return NULL;
+    }
 
+    vm->cfg_data = cfg_data;
 
-    v3_attach_device(info, pic);
-    v3_attach_device(info, pit);
-    v3_attach_device(info, keyboard);
-    // v3_attach_device(info, serial);
-    v3_attach_device(info, bochs_debug);
-    v3_attach_device(info, os_debug);
+    V3_Print("Preconfiguration\n");
 
-    v3_attach_device(info, apic);
-    v3_attach_device(info, ioapic);
+    if (pre_config_vm(vm, vm->cfg_data->cfg) == -1) {
+       PrintError("Error in preconfiguration\n");
+       return NULL;
+    }
+
+
+    V3_Print("Per core configuration\n");
+    per_core_cfg = v3_cfg_subtree(cores_cfg, "core");
 
-    v3_attach_device(info, para_net);
+    // per core configuration
+    for (i = 0; i < vm->num_cores; i++) {
+       struct guest_info * info = &(vm->cores[i]);
+
+       info->cpu_id = i;
+       info->vm_info = vm;
+
+       if (pre_config_core(info, per_core_cfg) == -1) {
+           PrintError("Error in core %d preconfiguration\n", i);
+           return NULL;
+       }
 
-    if (config_ptr->enable_pci == 1) {
-       PrintDebug("Attaching PCI\n");
-       v3_attach_device(info, pci);
-       PrintDebug("Attaching Northbridge\n");
-       v3_attach_device(info, northbridge);
-       PrintDebug("Attaching Southbridge\n");
-       v3_attach_device(info, southbridge);
+       per_core_cfg = v3_cfg_next_branch(per_core_cfg);
     }
 
-    PrintDebug("Attaching IDE\n");
-    v3_attach_device(info, ide);
 
-    if (ramdisk != NULL) {
-       v3_attach_device(info, ramdisk);
+    V3_Print("Post Configuration\n");
+
+    if (post_config_vm(vm, vm->cfg_data->cfg) == -1) {
+       PrintError("Error in postconfiguration\n");
+       return NULL;
     }
 
-    if (use_generic) {
-       // Important that this be attached last!
-       v3_attach_device(info, generic);
+
+    per_core_cfg = v3_cfg_subtree(cores_cfg, "core");
+
+    // per core configuration
+    for (i = 0; i < vm->num_cores; i++) {
+       struct guest_info * info = &(vm->cores[i]);
+
+       post_config_core(info, per_core_cfg);
+
+       per_core_cfg = v3_cfg_next_branch(per_core_cfg);
     }
 
-    // This should go last because it contains the hardware state
-    v3_attach_device(info, nvram);
-    
-    PrintDebugDevMgr(info);
+    V3_Print("Configuration successfull\n");
 
-    return 0;
+    return vm;
 }
 
 
 
-static struct vm_device *  configure_generic(struct guest_info * info, struct v3_vm_config * config_ptr) {
-    PrintDebug("Creating Generic Device\n");
-    struct vm_device * generic = v3_create_generic();
-    
 
-    // port 0x92: A20 enable/disable (bit 2) (This causes an MMU flush)
-
-
-    // Make the DMA controller invisible
-    v3_generic_add_port_range(generic, 0x00, 0x07, GENERIC_PRINT_AND_IGNORE);   // DMA 1 channels 0,1,2,3 (address, counter)
-    v3_generic_add_port_range(generic, 0xc0, 0xc7, GENERIC_PRINT_AND_IGNORE);   // DMA 2 channels 4,5,6,7 (address, counter)
-    v3_generic_add_port_range(generic, 0x87, 0x87, GENERIC_PRINT_AND_IGNORE);   // DMA 1 channel 0 page register
-    v3_generic_add_port_range(generic, 0x83, 0x83, GENERIC_PRINT_AND_IGNORE);   // DMA 1 channel 1 page register
-    v3_generic_add_port_range(generic, 0x81, 0x81, GENERIC_PRINT_AND_IGNORE);   // DMA 1 channel 2 page register
-    v3_generic_add_port_range(generic, 0x82, 0x82, GENERIC_PRINT_AND_IGNORE);   // DMA 1 channel 3 page register
-    v3_generic_add_port_range(generic, 0x8f, 0x8f, GENERIC_PRINT_AND_IGNORE);   // DMA 2 channel 4 page register
-    v3_generic_add_port_range(generic, 0x8b, 0x8b, GENERIC_PRINT_AND_IGNORE);   // DMA 2 channel 5 page register
-    v3_generic_add_port_range(generic, 0x89, 0x89, GENERIC_PRINT_AND_IGNORE);   // DMA 2 channel 6 page register
-    v3_generic_add_port_range(generic, 0x8a, 0x8a, GENERIC_PRINT_AND_IGNORE);   // DMA 2 channel 7 page register
-    v3_generic_add_port_range(generic, 0x08, 0x0f, GENERIC_PRINT_AND_IGNORE);   // DMA 1 misc registers (csr, req, smask,mode,clearff,reset,enable,mmask)
-    v3_generic_add_port_range(generic, 0xd0, 0xde, GENERIC_PRINT_AND_IGNORE);   // DMA 2 misc registers
-    
-    
-    
-    
-    // Make the Serial ports invisible 
-    
-    v3_generic_add_port_range(generic, 0x3f8, 0x3f8+7, GENERIC_PRINT_AND_IGNORE);      // COM 1
-    v3_generic_add_port_range(generic, 0x2f8, 0x2f8+7, GENERIC_PRINT_AND_IGNORE);      // COM 2
-    
-
-      
 
-    v3_generic_add_port_range(generic, 0x3e8, 0x3e8+7, GENERIC_PRINT_AND_IGNORE);      // COM 3
-    v3_generic_add_port_range(generic, 0x2e8, 0x2e8+7, GENERIC_PRINT_AND_IGNORE);      // COM 4
+static int setup_memory_map(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
+    v3_cfg_tree_t * mem_region = v3_cfg_subtree(v3_cfg_subtree(cfg, "memmap"), "region");
 
-      
-      
+    while (mem_region) {
+       addr_t start_addr = atox(v3_cfg_val(mem_region, "start"));
+       addr_t end_addr = atox(v3_cfg_val(mem_region, "end"));
+       addr_t host_addr = atox(v3_cfg_val(mem_region, "host_addr"));
 
-    // Make the PCI bus invisible (at least it's configuration)
-    
-    //v3_generic_add_port_range(generic, 0xcf8, 0xcf8, GENERIC_PRINT_AND_IGNORE); // PCI Config Address
-    //v3_generic_add_port_range(generic, 0xcfc, 0xcfc, GENERIC_PRINT_AND_IGNORE); // PCI Config Data
-    
     
-    
-#if 0
-    if (!use_ramdisk) {
-       // Monitor the IDE controllers (very slow)
-       v3_generic_add_port_range(generic, 0x170, 0x178, GENERIC_PRINT_AND_PASSTHROUGH); // IDE 1
-       v3_generic_add_port_range(generic, 0x376, 0x377, GENERIC_PRINT_AND_PASSTHROUGH); // IDE 1
+       if (v3_add_shadow_mem(vm, V3_MEM_CORE_ANY, start_addr, end_addr, host_addr) == -1) {
+           PrintError("Could not map memory region: %p-%p => %p\n", 
+                      (void *)start_addr, (void *)end_addr, (void *)host_addr);
+           return -1;
+       }
+
+       mem_region = v3_cfg_next_branch(mem_region);
     }
-      
 
-    v3_generic_add_port_range(generic, 0x1f0, 0x1f8, GENERIC_PRINT_AND_PASSTHROUGH); // IDE 0
-    v3_generic_add_port_range(generic, 0x3f6, 0x3f7, GENERIC_PRINT_AND_PASSTHROUGH); // IDE 0
-#endif
-      
-      
-#if 0
-    
-    // Make the floppy controllers invisible
-    
-    v3_generic_add_port_range(generic, 0x3f0, 0x3f2, GENERIC_PRINT_AND_IGNORE); // Primary floppy controller (base,statusa/statusb,DOR)
-    v3_generic_add_port_range(generic, 0x3f4, 0x3f5, GENERIC_PRINT_AND_IGNORE); // Primary floppy controller (mainstat/datarate,data)
-    v3_generic_add_port_range(generic, 0x3f7, 0x3f7, GENERIC_PRINT_AND_IGNORE); // Primary floppy controller (DIR)
-    v3_generic_add_port_range(generic, 0x370, 0x372, GENERIC_PRINT_AND_IGNORE); // Secondary floppy controller (base,statusa/statusb,DOR)
-    v3_generic_add_port_range(generic, 0x374, 0x375, GENERIC_PRINT_AND_IGNORE); // Secondary floppy controller (mainstat/datarate,data)
-    v3_generic_add_port_range(generic, 0x377, 0x377, GENERIC_PRINT_AND_IGNORE); // Secondary floppy controller (DIR)
-    
-#endif
+    return 0;
+}
 
-#if 1
 
-    // Make the parallel port invisible
-      
-    v3_generic_add_port_range(generic, 0x378, 0x37f, GENERIC_PRINT_AND_IGNORE);
 
-#endif
 
-#if 1
+static int setup_devices(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
+    v3_cfg_tree_t * device = v3_cfg_subtree(v3_cfg_subtree(cfg, "devices"), "device");
 
-    // Monitor graphics card operations
     
-    v3_generic_add_port_range(generic, 0x3b0, 0x3bb, GENERIC_PRINT_AND_PASSTHROUGH);
-    v3_generic_add_port_range(generic, 0x3c0, 0x3df, GENERIC_PRINT_AND_PASSTHROUGH);
-      
-#endif
+    while (device) {
+       char * dev_class = v3_cfg_val(device, "class");
 
+       V3_Print("configuring device %s\n", dev_class);
 
-#if 1
-    // Make the ISA PNP features invisible
-    
-    v3_generic_add_port_range(generic, 0x274, 0x277, GENERIC_PRINT_AND_IGNORE);
-    v3_generic_add_port_range(generic, 0x279, 0x279, GENERIC_PRINT_AND_IGNORE);
-    v3_generic_add_port_range(generic, 0xa79, 0xa79, GENERIC_PRINT_AND_IGNORE);
-#endif
+       if (v3_create_device(vm, dev_class, device) == -1) {
+           PrintError("Error creating device %s\n", dev_class);
+           return -1;
+       }
+       
+       device = v3_cfg_next_branch(device);
+    }
 
+    v3_print_dev_mgr(vm);
 
-#if 1
-    // Monitor any network card (realtek ne2000) operations 
-    v3_generic_add_port_range(generic, 0xc100, 0xc1ff, GENERIC_PRINT_AND_PASSTHROUGH);
-#endif
+    return 0;
+}
 
 
 
-    //  v3_generic_add_port_range(generic, 0x378, 0x400, GENERIC_PRINT_AND_IGNORE);
-    
 
-    return generic;
-}