Revision 4495d6a7 kvm-all.c
| b/kvm-all.c | ||
|---|---|---|
| 58 | 58 |
int vmfd; |
| 59 | 59 |
int coalesced_mmio; |
| 60 | 60 |
int broken_set_mem_region; |
| 61 |
int migration_log; |
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| 61 | 62 |
#ifdef KVM_CAP_SET_GUEST_DEBUG |
| 62 | 63 |
struct kvm_sw_breakpoint_head kvm_sw_breakpoints; |
| 63 | 64 |
#endif |
| ... | ... | |
| 135 | 136 |
mem.memory_size = slot->memory_size; |
| 136 | 137 |
mem.userspace_addr = (unsigned long)qemu_get_ram_ptr(slot->phys_offset); |
| 137 | 138 |
mem.flags = slot->flags; |
| 138 |
|
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if (s->migration_log) {
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mem.flags |= KVM_MEM_LOG_DIRTY_PAGES; |
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} |
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| 139 | 142 |
return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem); |
| 140 | 143 |
} |
| 141 | 144 |
|
| ... | ... | |
| 196 | 199 |
* dirty pages logging control |
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*/ |
| 198 | 201 |
static int kvm_dirty_pages_log_change(target_phys_addr_t phys_addr, |
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ram_addr_t size, unsigned flags, |
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unsigned mask) |
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ram_addr_t size, int flags, int mask) |
|
| 201 | 203 |
{
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KVMState *s = kvm_state; |
| 203 | 205 |
KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size); |
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int old_flags; |
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|
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if (mem == NULL) {
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fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-" |
| 206 | 210 |
TARGET_FMT_plx "\n", __func__, phys_addr, |
| ... | ... | |
| 208 | 212 |
return -EINVAL; |
| 209 | 213 |
} |
| 210 | 214 |
|
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flags = (mem->flags & ~mask) | flags; |
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/* Nothing changed, no need to issue ioctl */ |
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if (flags == mem->flags) |
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return 0; |
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old_flags = mem->flags; |
|
| 215 | 216 |
|
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flags = (mem->flags & ~mask) | flags; |
|
| 216 | 218 |
mem->flags = flags; |
| 217 | 219 |
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/* If nothing changed effectively, no need to issue ioctl */ |
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if (s->migration_log) {
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flags |= KVM_MEM_LOG_DIRTY_PAGES; |
|
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} |
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if (flags == old_flags) {
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return 0; |
|
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} |
|
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|
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| 218 | 228 |
return kvm_set_user_memory_region(s, mem); |
| 219 | 229 |
} |
| 220 | 230 |
|
| ... | ... | |
| 232 | 242 |
KVM_MEM_LOG_DIRTY_PAGES); |
| 233 | 243 |
} |
| 234 | 244 |
|
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int kvm_set_migration_log(int enable) |
|
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{
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KVMState *s = kvm_state; |
|
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KVMSlot *mem; |
|
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int i, err; |
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s->migration_log = enable; |
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|
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for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
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mem = &s->slots[i]; |
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if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) {
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continue; |
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} |
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err = kvm_set_user_memory_region(s, mem); |
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if (err) {
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return err; |
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} |
|
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} |
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return 0; |
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} |
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|
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| 235 | 267 |
/** |
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* kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space |
| 237 | 269 |
* This function updates qemu's dirty bitmap using cpu_physical_memory_set_dirty(). |
Also available in: Unified diff