From ab9b8620c62540f3267d005c198920671ef9abc3 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Fri, 3 Mar 2023 11:15:28 +0100 Subject: [PATCH 06/56] postcopy-ram: do not use qatomic_mb_read MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit RH-Author: Peter Xu RH-MergeRequest: 162: migration: Pretty failures for postcopy on unsupported memory types RH-Bugzilla: 2057267 RH-Acked-by: Leonardo Brás RH-Acked-by: Miroslav Rezanina RH-Acked-by: quintela1 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 (cherry picked from commit 4592eaf38755a28300d113cd128f65b5b38495f2) Signed-off-by: Peter Xu --- 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