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;
+
// Initialize the subsystem data strutures
v3_init_time(info);
v3_init_io_map(info);
v3_init_decoder(info);
+ v3_init_hypercall_map(info);
+
+
+ // Initialize the memory map
v3_init_shadow_map(info);
- v3_init_hypercall_map(info);
if ((v3_cpu_type == V3_SVM_REV3_CPU) &&
(config_ptr->enable_nested_paging == 1)) {
info->cpu_mode = REAL;
info->mem_mode = PHYSICAL_MEM;
- // Amount of ram the Guest will have, rounded to a 4K page boundary
- info->mem_size = config_ptr->mem_size & ~(addr_t)0xfff;
-
// Configure the memory map for the guest
if (setup_memory_map(info, config_ptr) == -1) {
PrintError("Setting up guest memory map failed...\n");
// Configure the devices for the guest
setup_devices(info, config_ptr);
-
-
if (config_ptr->enable_profiling) {
info->enable_profiler = 1;
v3_init_profiler(info);
* 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) {
- addr_t mem_pages = info->mem_size >> 12;
-
PrintDebug("Setting up memory map (memory size=%dMB)\n", (uint_t)(info->mem_size / (1024 * 1024)));
- // Fill up to the 640K hole
- if (mem_pages >= 160) {
- if (v3_add_shadow_mem(info, 0x0, 0xa0000, (addr_t)V3_AllocPages(160)) == -1) {
- PrintError("Could not map full conventional memory\n");
- return -1;
- }
- } else {
- // Less than 640k of memory
- if (v3_add_shadow_mem(info, 0x0, (mem_pages * PAGE_SIZE), (addr_t)V3_AllocPages(mem_pages)) == -1) {
- PrintError("Could not map subset of conventional memory\n");
- return -1;
- };
- }
-
-
-#define VGABIOS_START 0x000c0000
-#define ROMBIOS_START 0x000f0000
-
// VGA frame buffer
if (1) {
if (v3_add_shadow_mem(info, 0xa0000, 0xc0000, 0xa0000) == -1) {
} else {
v3_hook_write_mem(info, 0xa0000, 0xc0000, 0xa0000, passthrough_mem_write, NULL);
}
-
-
+
+#define VGABIOS_START 0x000c0000
+#define ROMBIOS_START 0x000f0000
+
/* layout vgabios */
{
- uint_t num_pages = (config_ptr->vgabios_size + PAGE_SIZE - 1) / PAGE_SIZE;
- void * guest_mem = V3_AllocPages(num_pages);
- addr_t vgabios_end = VGABIOS_START + (num_pages * PAGE_SIZE);
-
- PrintDebug("Layout Region %d bytes\n", config_ptr->vgabios_size);
- memcpy(V3_VAddr(guest_mem), config_ptr->vgabios, config_ptr->vgabios_size);
-
- if (v3_add_shadow_mem(info, VGABIOS_START, vgabios_end, (addr_t)guest_mem) == -1) {
- PrintError("Could not map VGABIOS\n");
- return -1;
- }
-
- PrintDebug("Adding Shadow Region (0x%p-0x%p) -> 0x%p\n",
- (void *)VGABIOS_START,
- (void *)vgabios_end,
- (void *)guest_mem);
-
-
- // Fill in the space between the VGABIOS and the ROMBIOS
- // We'll just back this to shadow memory for now....
- if (v3_add_shadow_mem(info, vgabios_end, ROMBIOS_START,
- (addr_t)V3_AllocPages((ROMBIOS_START - vgabios_end) / PAGE_SIZE)) == -1) {
- PrintError("Could not map VGABIOS->ROMBIOS gap\n");
- return -1;
- }
+ 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);
}
/* layout rombios */
{
- uint_t num_pages = (config_ptr->rombios_size + PAGE_SIZE - 1) / PAGE_SIZE;
- void * guest_mem = V3_AllocPages(num_pages);
- addr_t rombios_end = ROMBIOS_START + (num_pages * PAGE_SIZE);
-
- PrintDebug("Layout Region %d bytes\n", config_ptr->rombios_size);
- memcpy(V3_VAddr(guest_mem), config_ptr->rombios, config_ptr->rombios_size);
-
- if (v3_add_shadow_mem(info, ROMBIOS_START, rombios_end, (addr_t)guest_mem) == -1) {
- PrintError("Could not map ROMBIOS\n");
- return -1;
- }
-
- PrintDebug("Adding Shadow Region (0x%p-0x%p) -> 0x%p\n",
- (void *)ROMBIOS_START,
- (void *)rombios_end,
- (void *)guest_mem);
-
- if (rombios_end != 0x100000) {
- PrintError("ROMBIOS must reach the 1MB barrier....\n");
- return -1;
- }
+ 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);
}
#ifdef CRAY_XT
{
#define SEASTAR_START 0xffe00000
#define SEASTAR_END 0xffffffff
-
- // Fill in generic memory below the seastar
- addr_t top_of_mem = (SEASTAR_START < info->mem_size) ? SEASTAR_START : info->mem_size;
- int num_low_pages = (top_of_mem - 0x100000) / PAGE_SIZE;
-
- if (v3_add_shadow_mem(info, 0x100000, top_of_mem, (addr_t)V3_AllocPages(num_low_pages)) == -1) {
- PrintError("Could not extended memory below 4G\n");
- return -1;
- }
-
// 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");
return -1;
}
-
-
- // Add memory above the seastar
- if (info->mem_size > SEASTAR_END) {
- int num_high_pages = mem_pages - (SEASTAR_END / PAGE_SIZE);
-
- if (v3_add_shadow_mem(info, SEASTAR_END, info->mem_size, (addr_t)V3_AllocPages(num_high_pages)) == -1) {
- PrintError("Could not map extended memory above 4G\n");
- return -1;
- }
- }
- }
-#else
- // Fill in the extended memory map....
- {
- int num_ext_pages = mem_pages - (0x100000 / PAGE_SIZE);
-
- if (num_ext_pages > 0) {
- if (v3_add_shadow_mem(info, 0x100000, info->mem_size, (addr_t)V3_AllocPages(num_ext_pages)) == -1) {
- PrintError("Could not allocate extended shadow memory\n");
- return -1;
- }
- }
}
#endif