[PATCH v8 08/27] migration: make loadvm_postcopy_handle_resume() void

Arun Menon posted 27 patches 3 months, 2 weeks ago
Maintainers: Stefan Berger <stefanb@linux.vnet.ibm.com>, Peter Xu <peterx@redhat.com>, Fabiano Rosas <farosas@suse.de>, "Michael S. Tsirkin" <mst@redhat.com>, "Alex Bennée" <alex.bennee@linaro.org>, Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>, Dmitry Osipenko <dmitry.osipenko@collabora.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Cornelia Huck <cohuck@redhat.com>, Halil Pasic <pasic@linux.ibm.com>, Eric Farman <farman@linux.ibm.com>, Thomas Huth <thuth@redhat.com>, Richard Henderson <richard.henderson@linaro.org>, David Hildenbrand <david@redhat.com>, Ilya Leoshkevich <iii@linux.ibm.com>, Christian Borntraeger <borntraeger@linux.ibm.com>, Matthew Rosato <mjrosato@linux.ibm.com>, Paolo Bonzini <pbonzini@redhat.com>, Fam Zheng <fam@euphon.net>, Nicholas Piggin <npiggin@gmail.com>, Harsh Prateek Bora <harshpb@linux.ibm.com>, Alex Williamson <alex.williamson@redhat.com>, "Cédric Le Goater" <clg@redhat.com>, Hailiang Zhang <zhanghailiang@xfusion.com>, Steve Sistare <steven.sistare@oracle.com>, "Marc-André Lureau" <marcandre.lureau@redhat.com>
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[PATCH v8 08/27] migration: make loadvm_postcopy_handle_resume() void
Posted by Arun Menon 3 months, 2 weeks ago
This is an incremental step in converting vmstate loading
code to report error via Error objects instead of directly
printing it to console/monitor.

Use warn_report() instead of error_report(); it ensures that
a resume command received while the migration is not
in postcopy recover state is not fatal. It only informs that
the command received is unusual, and therefore we should not set
errp with the error string.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Arun Menon <armenon@redhat.com>
---
 migration/savevm.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/migration/savevm.c b/migration/savevm.c
index 39d6fd5b832971f23afc08100a20bcac045f3904..dfdb39952b0de12f7a4d6a0850c052a50e719925 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -2334,12 +2334,12 @@ static void migrate_send_rp_req_pages_pending(MigrationIncomingState *mis)
     }
 }
 
-static int loadvm_postcopy_handle_resume(MigrationIncomingState *mis)
+static void loadvm_postcopy_handle_resume(MigrationIncomingState *mis)
 {
     if (mis->state != MIGRATION_STATUS_POSTCOPY_RECOVER) {
-        error_report("%s: illegal resume received", __func__);
+        warn_report("%s: illegal resume received", __func__);
         /* Don't fail the load, only for this. */
-        return 0;
+        return;
     }
 
     /*
@@ -2391,8 +2391,6 @@ static int loadvm_postcopy_handle_resume(MigrationIncomingState *mis)
         /* Kick the fast ram load thread too */
         qemu_sem_post(&mis->postcopy_pause_sem_fast_load);
     }
-
-    return 0;
 }
 
 /**
@@ -2627,7 +2625,8 @@ static int loadvm_process_command(QEMUFile *f)
         return loadvm_postcopy_ram_handle_discard(mis, len);
 
     case MIG_CMD_POSTCOPY_RESUME:
-        return loadvm_postcopy_handle_resume(mis);
+        loadvm_postcopy_handle_resume(mis);
+        return 0;
 
     case MIG_CMD_RECV_BITMAP:
         return loadvm_handle_recv_bitmap(mis, len);

-- 
2.50.0