1 #include <palacios/vmm_mem.h>
2 #include <palacios/vmm.h>
3 #include <palacios/vmm_util.h>
5 extern struct vmm_os_hooks * os_hooks;
8 void init_shadow_region(shadow_region_t * entry,
9 addr_t guest_addr_start,
10 addr_t guest_addr_end,
11 guest_region_type_t guest_region_type,
12 host_region_type_t host_region_type)
14 entry->guest_type = guest_region_type;
15 entry->guest_start = guest_addr_start;
16 entry->guest_end = guest_addr_end;
17 entry->host_type = host_region_type;
18 entry->next=entry->prev = NULL;
21 int add_shadow_region_passthrough( struct guest_info * guest_info,
22 addr_t guest_addr_start,
23 addr_t guest_addr_end,
24 addr_t host_addr_start)
26 shadow_region_t * entry = os_hooks->malloc(sizeof(shadow_region_t));
28 init_shadow_region(entry, guest_addr_start, guest_addr_end,
29 GUEST_REGION_PHYSICAL_MEMORY, HOST_REGION_PHYSICAL_MEMORY);
30 entry->host_addr.phys_addr.host_start = host_addr_start;
32 return add_shadow_region(&(guest_info->mem_map), entry);
38 void init_shadow_map(struct shadow_map * map) {
45 void free_shadow_map(struct shadow_map * map) {
46 shadow_region_t * cursor = map->head;
47 shadow_region_t * tmp = NULL;
51 cursor = cursor->next;
61 int add_shadow_region(struct shadow_map * map,
62 shadow_region_t * region)
64 shadow_region_t * cursor = map->head;
66 PrintDebug("Adding Shadow Region: (0x%x-0x%x)\n", region->guest_start, region->guest_end);
68 if ((!cursor) || (cursor->guest_start >= region->guest_end)) {
70 region->next = cursor;
77 // Check if it overlaps with the current cursor
78 if ((cursor->guest_end > region->guest_start) && (cursor->guest_start < region->guest_start)) {
79 // overlaps not allowed
83 if (!(cursor->next)) {
84 // add to the end of the list
85 cursor->next = region;
86 region->prev = cursor;
90 } else if (cursor->next->guest_start >= region->guest_end) {
92 region->next = cursor->next;
93 region->prev = cursor;
95 cursor->next->prev = region;
96 cursor->next = region;
101 } else if (cursor->next->guest_end <= region->guest_start) {
102 cursor = cursor->next;
104 PrintDebug("WTF?\n");
105 // This cannot happen!
106 // we should panic here
111 // This cannot happen
112 // We should panic here
117 int delete_shadow_region(struct shadow_map * map,
125 shadow_region_t *get_shadow_region_by_index(struct shadow_map * map,
127 shadow_region_t * reg = map->head;
141 shadow_region_t * get_shadow_region_by_addr(struct shadow_map * map,
143 shadow_region_t * reg = map->head;
146 if ((reg->guest_start <= addr) && (reg->guest_end > addr)) {
148 } else if (reg->guest_start > addr) {
158 host_region_type_t get_shadow_addr_type(struct guest_info * info, addr_t guest_addr) {
159 shadow_region_t * reg = get_shadow_region_by_addr(&(info->mem_map), guest_addr);
162 return HOST_REGION_INVALID;
164 return reg->host_type;
168 addr_t get_shadow_addr(struct guest_info * info, addr_t guest_addr) {
169 shadow_region_t * reg = get_shadow_region_by_addr(&(info->mem_map), guest_addr);
174 return (guest_addr - reg->guest_start) + reg->host_addr.phys_addr.host_start;
179 host_region_type_t lookup_shadow_map_addr(struct shadow_map * map, addr_t guest_addr, addr_t * host_addr) {
180 shadow_region_t * reg = get_shadow_region_by_addr(map, guest_addr);
184 return HOST_REGION_INVALID;
186 switch (reg->host_type) {
187 case HOST_REGION_PHYSICAL_MEMORY:
188 *host_addr = (guest_addr - reg->guest_start) + reg->host_addr.phys_addr.host_start;
189 return reg->host_type;
190 case HOST_REGION_MEMORY_MAPPED_DEVICE:
191 case HOST_REGION_UNALLOCATED:
195 return reg->host_type;
201 void print_shadow_map(struct shadow_map * map) {
202 shadow_region_t * cur = map->head;
205 PrintDebug("Memory Layout (regions: %d) \n", map->num_regions);
208 PrintDebug("%d: 0x%x - 0x%x (%s) -> ", i, cur->guest_start, cur->guest_end - 1,
209 cur->guest_type == GUEST_REGION_PHYSICAL_MEMORY ? "GUEST_REGION_PHYSICAL_MEMORY" :
210 cur->guest_type == GUEST_REGION_NOTHING ? "GUEST_REGION_NOTHING" :
211 cur->guest_type == GUEST_REGION_MEMORY_MAPPED_DEVICE ? "GUEST_REGION_MEMORY_MAPPED_DEVICE" :
213 if (cur->host_type == HOST_REGION_PHYSICAL_MEMORY ||
214 cur->host_type == HOST_REGION_UNALLOCATED ||
215 cur->host_type == HOST_REGION_MEMORY_MAPPED_DEVICE) {
216 PrintDebug("0x%x", cur->host_addr.phys_addr.host_start);
219 cur->host_type == HOST_REGION_PHYSICAL_MEMORY ? "HOST_REGION_PHYSICAL_MEMORY" :
220 cur->host_type == HOST_REGION_UNALLOCATED ? "HOST_REGION_UNALLOACTED" :
221 cur->host_type == HOST_REGION_NOTHING ? "HOST_REGION_NOTHING" :
222 cur->host_type == HOST_REGION_MEMORY_MAPPED_DEVICE ? "HOST_REGION_MEMORY_MAPPED_DEVICE" :
223 cur->host_type == HOST_REGION_REMOTE ? "HOST_REGION_REMOTE" :
224 cur->host_type == HOST_REGION_SWAPPED ? "HOST_REGION_SWAPPED" :
251 struct vmm_os_hooks * os_hooks;
253 void * TestMalloc(uint_t size) {
257 void * TestAllocatePages(int size) {
258 return malloc(4096 * size);
262 void TestPrint(const char * fmt, ...) {
270 int mem_list_add_test_1( vmm_mem_list_t * list) {
274 PrintDebug("\n\nTesting Memory List\n");
278 offset = PAGE_SIZE * 6;
279 PrintDebug("Adding 0x%x - 0x%x\n", offset, offset + (PAGE_SIZE * 10));
280 add_mem_list_pages(list, offset, 10);
281 print_mem_list(list);
285 PrintDebug("Adding 0x%x - 0x%x\n", offset, offset + PAGE_SIZE * 4);
286 add_mem_list_pages(list, offset, 4);
287 print_mem_list(list);
289 offset = PAGE_SIZE * 20;
290 PrintDebug("Adding 0x%x - 0x%x\n", offset, offset + (PAGE_SIZE * 1));
291 add_mem_list_pages(list, offset, 1);
292 print_mem_list(list);
294 offset = PAGE_SIZE * 21;
295 PrintDebug("Adding 0x%x - 0x%x\n", offset, offset + (PAGE_SIZE * 3));
296 add_mem_list_pages(list, offset, 3);
297 print_mem_list(list);
300 offset = PAGE_SIZE * 10;
301 PrintDebug("Adding 0x%x - 0x%x\n", offset, offset + (PAGE_SIZE * 30));
302 add_mem_list_pages(list, offset, 30);
303 print_mem_list(list);
306 offset = PAGE_SIZE * 5;
307 PrintDebug("Adding 0x%x - 0x%x\n", offset, offset + (PAGE_SIZE * 1));
308 add_mem_list_pages(list, offset, 1);
309 print_mem_list(list);
317 int mem_layout_add_test_1(vmm_mem_layout_t * layout) {
323 PrintDebug("\n\nTesting Memory Layout\n");
325 init_mem_layout(layout);
329 PrintDebug("Adding 0x%x - 0x%x\n", start, end);
330 add_guest_mem_range(layout, start, end);
331 print_mem_layout(layout);
336 PrintDebug("Adding 0x%x - 0x%x\n", start, end);
337 add_guest_mem_range(layout, start, end);
338 print_mem_layout(layout);
342 PrintDebug("Adding 0x%x - 0x%x\n", start, end);
343 add_guest_mem_range(layout, start, end);
344 print_mem_layout(layout);
348 PrintDebug("Adding 0x%x - 0x%x\n", start, end);
349 add_guest_mem_range(layout, start, end);
350 print_mem_layout(layout);
355 PrintDebug("Adding 0x%x - 0x%x\n", start, end);
356 add_guest_mem_range(layout, start, end);
357 print_mem_layout(layout);
367 int main(int argc, char ** argv) {
368 struct vmm_os_hooks dummy_hooks;
369 os_hooks = &dummy_hooks;
371 vmm_mem_layout_t layout;
374 os_hooks->malloc = &TestMalloc;
375 os_hooks->free = &free;
376 os_hooks->print_debug = &TestPrint;
377 os_hooks->allocate_pages = &TestAllocatePages;
381 printf("mem_list_add_test_1: %d\n", mem_list_add_test_1(&list));
382 printf("layout_add_test_1: %d\n", mem_layout_add_test_1(&layout));