diff options
Diffstat (limited to 'accel')
| -rw-r--r-- | accel/kvm/kvm-all.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 8d81ab74de..136c8eaed3 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -719,7 +719,11 @@ static void kvm_dirty_ring_mark_page(KVMState *s, uint32_t as_id, static bool dirty_gfn_is_dirtied(struct kvm_dirty_gfn *gfn) { - return gfn->flags == KVM_DIRTY_GFN_F_DIRTY; + /* + * Read the flags before the value. Pairs with barrier in + * KVM's kvm_dirty_ring_push() function. + */ + return qatomic_load_acquire(&gfn->flags) == KVM_DIRTY_GFN_F_DIRTY; } static void dirty_gfn_set_collected(struct kvm_dirty_gfn *gfn) |