Revision 96c1606b kvm-all.c
| b/kvm-all.c | ||
|---|---|---|
| 304 | 304 |
return 0; |
| 305 | 305 |
} |
| 306 | 306 |
|
| 307 |
static int test_le_bit(unsigned long nr, unsigned char *addr) |
|
| 308 |
{
|
|
| 309 |
return (addr[nr >> 3] >> (nr & 7)) & 1; |
|
| 310 |
} |
|
| 311 |
|
|
| 307 | 312 |
/** |
| 308 | 313 |
* kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space |
| 309 | 314 |
* This function updates qemu's dirty bitmap using cpu_physical_memory_set_dirty(). |
| ... | ... | |
| 357 | 362 |
for (phys_addr = mem->start_addr, addr = mem->phys_offset; |
| 358 | 363 |
phys_addr < mem->start_addr + mem->memory_size; |
| 359 | 364 |
phys_addr += TARGET_PAGE_SIZE, addr += TARGET_PAGE_SIZE) {
|
| 360 |
uint64_t *bitmap = (uint64_t *)d.dirty_bitmap;
|
|
| 365 |
unsigned char *bitmap = (unsigned char *)d.dirty_bitmap;
|
|
| 361 | 366 |
unsigned nr = (phys_addr - mem->start_addr) >> TARGET_PAGE_BITS; |
| 362 |
unsigned word = nr / (sizeof(*bitmap) * 8); |
|
| 363 |
unsigned bit = nr % (sizeof(*bitmap) * 8); |
|
| 364 | 367 |
|
| 365 |
if ((bitmap[word] >> bit) & 1) {
|
|
| 368 |
if (test_le_bit(nr, bitmap)) {
|
|
| 366 | 369 |
cpu_physical_memory_set_dirty(addr); |
| 367 | 370 |
} else if (r < 0) {
|
| 368 | 371 |
/* When our KVM implementation doesn't know about dirty logging |
Also available in: Unified diff