diff options
Diffstat (limited to 'accel/kvm')
| -rw-r--r-- | accel/kvm/kvm-all.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index e72a19aaf8..47516913b7 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -644,16 +644,19 @@ static int kvm_physical_sync_dirty_bitmap(KVMMemoryListener *kml, d.dirty_bitmap = mem->dirty_bmap; d.slot = mem->slot | (kml->as_id << 16); - if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) { - DPRINTF("ioctl failed %d\n", errno); - ret = -1; + ret = kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d); + if (ret == -ENOENT) { + /* kernel does not have dirty bitmap in this slot */ + ret = 0; + } else if (ret < 0) { + error_report("ioctl KVM_GET_DIRTY_LOG failed: %d", errno); goto out; + } else { + subsection.offset_within_region += slot_offset; + subsection.size = int128_make64(slot_size); + kvm_get_dirty_pages_log_range(&subsection, d.dirty_bitmap); } - subsection.offset_within_region += slot_offset; - subsection.size = int128_make64(slot_size); - kvm_get_dirty_pages_log_range(&subsection, d.dirty_bitmap); - slot_offset += slot_size; start_addr += slot_size; size -= slot_size; @@ -750,8 +753,8 @@ static int kvm_log_clear_one_slot(KVMSlot *mem, int as_id, uint64_t start, d.num_pages = bmap_npages; d.slot = mem->slot | (as_id << 16); - if (kvm_vm_ioctl(s, KVM_CLEAR_DIRTY_LOG, &d) == -1) { - ret = -errno; + ret = kvm_vm_ioctl(s, KVM_CLEAR_DIRTY_LOG, &d); + if (ret < 0 && ret != -ENOENT) { error_report("%s: KVM_CLEAR_DIRTY_LOG failed, slot=%d, " "start=0x%"PRIx64", size=0x%"PRIx32", errno=%d", __func__, d.slot, (uint64_t)d.first_page, |