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) {
159 host_region_type_t lookup_shadow_map_addr(struct shadow_map * map, addr_t guest_addr, addr_t * host_addr) {
160 shadow_region_t * reg = get_shadow_region_by_addr(map, guest_addr);
164 return HOST_REGION_INVALID;
166 switch (reg->host_type) {
167 case HOST_REGION_PHYSICAL_MEMORY:
168 *host_addr = (guest_addr - reg->guest_start) + reg->host_addr.phys_addr.host_start;
169 return reg->host_type;
170 case HOST_REGION_MEMORY_MAPPED_DEVICE:
171 case HOST_REGION_UNALLOCATED:
175 return reg->host_type;
181 void print_shadow_map(struct shadow_map * map) {
182 shadow_region_t * cur = map->head;
185 PrintDebug("Memory Layout (regions: %d) \n", map->num_regions);
188 PrintDebug("%d: 0x%x - 0x%x (%s) -> ", i, cur->guest_start, cur->guest_end - 1,
189 cur->guest_type == GUEST_REGION_PHYSICAL_MEMORY ? "GUEST_REGION_PHYSICAL_MEMORY" :
190 cur->guest_type == GUEST_REGION_NOTHING ? "GUEST_REGION_NOTHING" :
191 cur->guest_type == GUEST_REGION_MEMORY_MAPPED_DEVICE ? "GUEST_REGION_MEMORY_MAPPED_DEVICE" :
193 if (cur->host_type == HOST_REGION_PHYSICAL_MEMORY ||
194 cur->host_type == HOST_REGION_UNALLOCATED ||
195 cur->host_type == HOST_REGION_MEMORY_MAPPED_DEVICE) {
196 PrintDebug("0x%x", cur->host_addr.phys_addr.host_start);
199 cur->host_type == HOST_REGION_PHYSICAL_MEMORY ? "HOST_REGION_PHYSICAL_MEMORY" :
200 cur->host_type == HOST_REGION_UNALLOCATED ? "HOST_REGION_UNALLOACTED" :
201 cur->host_type == HOST_REGION_NOTHING ? "HOST_REGION_NOTHING" :
202 cur->host_type == HOST_REGION_MEMORY_MAPPED_DEVICE ? "HOST_REGION_MEMORY_MAPPED_DEVICE" :
203 cur->host_type == HOST_REGION_REMOTE ? "HOST_REGION_REMOTE" :
204 cur->host_type == HOST_REGION_SWAPPED ? "HOST_REGION_SWAPPED" :
231 struct vmm_os_hooks * os_hooks;
233 void * TestMalloc(uint_t size) {
237 void * TestAllocatePages(int size) {
238 return malloc(4096 * size);
242 void TestPrint(const char * fmt, ...) {
250 int mem_list_add_test_1( vmm_mem_list_t * list) {
254 PrintDebug("\n\nTesting Memory List\n");
258 offset = PAGE_SIZE * 6;
259 PrintDebug("Adding 0x%x - 0x%x\n", offset, offset + (PAGE_SIZE * 10));
260 add_mem_list_pages(list, offset, 10);
261 print_mem_list(list);
265 PrintDebug("Adding 0x%x - 0x%x\n", offset, offset + PAGE_SIZE * 4);
266 add_mem_list_pages(list, offset, 4);
267 print_mem_list(list);
269 offset = PAGE_SIZE * 20;
270 PrintDebug("Adding 0x%x - 0x%x\n", offset, offset + (PAGE_SIZE * 1));
271 add_mem_list_pages(list, offset, 1);
272 print_mem_list(list);
274 offset = PAGE_SIZE * 21;
275 PrintDebug("Adding 0x%x - 0x%x\n", offset, offset + (PAGE_SIZE * 3));
276 add_mem_list_pages(list, offset, 3);
277 print_mem_list(list);
280 offset = PAGE_SIZE * 10;
281 PrintDebug("Adding 0x%x - 0x%x\n", offset, offset + (PAGE_SIZE * 30));
282 add_mem_list_pages(list, offset, 30);
283 print_mem_list(list);
286 offset = PAGE_SIZE * 5;
287 PrintDebug("Adding 0x%x - 0x%x\n", offset, offset + (PAGE_SIZE * 1));
288 add_mem_list_pages(list, offset, 1);
289 print_mem_list(list);
297 int mem_layout_add_test_1(vmm_mem_layout_t * layout) {
303 PrintDebug("\n\nTesting Memory Layout\n");
305 init_mem_layout(layout);
309 PrintDebug("Adding 0x%x - 0x%x\n", start, end);
310 add_guest_mem_range(layout, start, end);
311 print_mem_layout(layout);
316 PrintDebug("Adding 0x%x - 0x%x\n", start, end);
317 add_guest_mem_range(layout, start, end);
318 print_mem_layout(layout);
322 PrintDebug("Adding 0x%x - 0x%x\n", start, end);
323 add_guest_mem_range(layout, start, end);
324 print_mem_layout(layout);
328 PrintDebug("Adding 0x%x - 0x%x\n", start, end);
329 add_guest_mem_range(layout, start, end);
330 print_mem_layout(layout);
335 PrintDebug("Adding 0x%x - 0x%x\n", start, end);
336 add_guest_mem_range(layout, start, end);
337 print_mem_layout(layout);
347 int main(int argc, char ** argv) {
348 struct vmm_os_hooks dummy_hooks;
349 os_hooks = &dummy_hooks;
351 vmm_mem_layout_t layout;
354 os_hooks->malloc = &TestMalloc;
355 os_hooks->free = &free;
356 os_hooks->print_debug = &TestPrint;
357 os_hooks->allocate_pages = &TestAllocatePages;
361 printf("mem_list_add_test_1: %d\n", mem_list_add_test_1(&list));
362 printf("layout_add_test_1: %d\n", mem_layout_add_test_1(&layout));