diff options
| -rw-r--r-- | virt/kvm/dirty_ring.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/virt/kvm/dirty_ring.c b/virt/kvm/dirty_ring.c index e844e869e8c7..97cca0c02fd1 100644 --- a/virt/kvm/dirty_ring.c +++ b/virt/kvm/dirty_ring.c @@ -134,6 +134,16 @@ int kvm_dirty_ring_reset(struct kvm *kvm, struct kvm_dirty_ring *ring, ring->reset_index++; (*nr_entries_reset)++; + + /* + * While the size of each ring is fixed, it's possible for the + * ring to be constantly re-dirtied/harvested while the reset + * is in-progress (the hard limit exists only to guard against + * wrapping the count into negative space). + */ + if (!first_round) + cond_resched(); + /* * Try to coalesce the reset operations when the guest is * scanning pages in the same slot. |