memory: switch memory listeners to a QTAILQ

This allows reverse iteration, which in turns allows consistent ordering
among multiple listeners:

  l1->add
  l2->add
  l2->del
  l1->del

Signed-off-by: Avi Kivity <avi@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/xen-all.c b/xen-all.c
index fd3916857c..8cb84efa55 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -495,6 +495,7 @@ static MemoryListener xen_memory_listener = {
     .log_sync = xen_log_sync,
     .log_global_start = xen_log_global_start,
     .log_global_stop = xen_log_global_stop,
+    .priority = 10,
 };
 
 /* VCPU Operations, MMIO, IO ring ... */