From ab9b8620c62540f3267d005c198920671ef9abc3 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Fri, 3 Mar 2023 11:15:28 +0100
Subject: [PATCH 06/56] postcopy-ram: do not use qatomic_mb_read
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RH-Author: Peter Xu <peterx@redhat.com>
RH-MergeRequest: 162: migration: Pretty failures for postcopy on unsupported memory types
RH-Bugzilla: 2057267
RH-Acked-by: Leonardo BrĂ¡s <leobras@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: quintela1 <quintela@redhat.com>
RH-Commit: [5/50] 534c0e13362dfc994fa90c79bfb5ed6ee8c27dfc (peterx/qemu-kvm)

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>
(cherry picked from commit 4592eaf38755a28300d113cd128f65b5b38495f2)
Signed-off-by: Peter Xu <peterx@redhat.com>
---
 migration/postcopy-ram.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c
index bbb8af61ae..d7b48dd920 100644
--- a/migration/postcopy-ram.c
+++ b/migration/postcopy-ram.c
@@ -1526,7 +1526,7 @@ 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 */
-- 
2.39.1