postcopy-ram: do not use qatomic_mb_read

It does not even pair with a qatomic_mb_set(), so it is clearer to use
load-acquire in this case; they are synonyms.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c
index 93f39f8..7d24dac 100644 (file)
--- a/migration/postcopy-ram.c
+++ b/migration/postcopy-ram.c
@@ -1500,7 +1500,7 @@ static PostcopyState incoming_postcopy_state;
 
 PostcopyState  postcopy_state_get(void)
 {
-    return qatomic_mb_read(&incoming_postcopy_state);
+    return qatomic_load_acquire(&incoming_postcopy_state);
 }
 
 /* Set the state and return the old state */