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43 lines
1.5 KiB
43 lines
1.5 KiB
1 year ago
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From ab9b8620c62540f3267d005c198920671ef9abc3 Mon Sep 17 00:00:00 2001
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From: Paolo Bonzini <pbonzini@redhat.com>
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Date: Fri, 3 Mar 2023 11:15:28 +0100
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Subject: [PATCH 06/56] postcopy-ram: do not use qatomic_mb_read
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Peter Xu <peterx@redhat.com>
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RH-MergeRequest: 162: migration: Pretty failures for postcopy on unsupported memory types
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RH-Bugzilla: 2057267
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RH-Acked-by: Leonardo Brás <leobras@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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RH-Acked-by: quintela1 <quintela@redhat.com>
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RH-Commit: [5/50] 534c0e13362dfc994fa90c79bfb5ed6ee8c27dfc (peterx/qemu-kvm)
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It does not even pair with a qatomic_mb_set(), so it is clearer to use
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load-acquire in this case; they are synonyms.
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit 4592eaf38755a28300d113cd128f65b5b38495f2)
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Signed-off-by: Peter Xu <peterx@redhat.com>
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---
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migration/postcopy-ram.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c
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index bbb8af61ae..d7b48dd920 100644
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--- a/migration/postcopy-ram.c
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+++ b/migration/postcopy-ram.c
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@@ -1526,7 +1526,7 @@ static PostcopyState incoming_postcopy_state;
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PostcopyState postcopy_state_get(void)
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{
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- return qatomic_mb_read(&incoming_postcopy_state);
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+ return qatomic_load_acquire(&incoming_postcopy_state);
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}
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/* Set the state and return the old state */
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--
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2.39.1
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