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migration: activate TLS thread safety workaround

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When either the postcopy or return path capabilities are
enabled, the migration code will use the primary channel
for bidirectional I/O.

If either of those capabilities are enabled, the migration
code needs to mark the channel as expecting concurrent I/O
in order to activate the thread safety workarounds for
GNUTLS bug 1717

Closes: https://gitlab.com/qemu-project/qemu/-/issues/1937
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Link: https://lore.kernel.org/qemu-devel/20250718150514.2635338-4-berrange@redhat.com
Signed-off-by: Fabiano Rosas <farosas@suse.de>
This commit is contained in:
Daniel P. Berrangé
2025-07-18 16:05:13 +01:00
committed by Fabiano Rosas
parent edea818371
commit eb3618e9e2
1 changed files with 9 additions and 0 deletions
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migration/tls.c
+9
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@@ -90,6 +90,10 @@ void migration_tls_channel_process_incoming(MigrationState *s,
trace_migration_tls_incoming_handshake_start();
qio_channel_set_name(QIO_CHANNEL(tioc), "migration-tls-incoming");
if (migrate_postcopy_ram() || migrate_return_path()) {
qio_channel_set_feature(QIO_CHANNEL(tioc),
QIO_CHANNEL_FEATURE_CONCURRENT_IO);
}
qio_channel_tls_handshake(tioc,
migration_tls_incoming_handshake,
NULL,
@@ -149,6 +153,11 @@ void migration_tls_channel_connect(MigrationState *s,
s->hostname = g_strdup(hostname);
trace_migration_tls_outgoing_handshake_start(hostname);
qio_channel_set_name(QIO_CHANNEL(tioc), "migration-tls-outgoing");
if (migrate_postcopy_ram() || migrate_return_path()) {
qio_channel_set_feature(QIO_CHANNEL(tioc),
QIO_CHANNEL_FEATURE_CONCURRENT_IO);
}
qio_channel_tls_handshake(tioc,
migration_tls_outgoing_handshake,
s,