[Qemu-devel] [PULL 02/15] migration: Report values for comparisons

[Juan Quintela <quintela@redhat.com>]

From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>

Report the values when a comparison fails; together with
the previous patch that prints the device and field names
this should give a good idea of why loading the migration failed.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 migration/vmstate.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/migration/vmstate.c b/migration/vmstate.c
index 1d637b2..0bc9f35 100644
--- a/migration/vmstate.c
+++ b/migration/vmstate.c
@@ -557,6 +557,7 @@ static int get_int32_equal(QEMUFile *f, void *pv, size_t size)
     if (*v == v2) {
         return 0;
     }
+    error_report("%" PRIx32 " != %" PRIx32, *v, v2);
     return -EINVAL;
 }

@@ -580,6 +581,9 @@ static int get_int32_le(QEMUFile *f, void *pv, size_t size)
         *cur = loaded;
         return 0;
     }
+    error_report("Invalid value %" PRId32
+                 " expecting positive value <= %" PRId32,
+                 loaded, *cur);
     return -EINVAL;
 }

@@ -685,6 +689,7 @@ static int get_uint32_equal(QEMUFile *f, void *pv, size_t size)
     if (*v == v2) {
         return 0;
     }
+    error_report("%" PRIx32 " != %" PRIx32, *v, v2);
     return -EINVAL;
 }

@@ -727,6 +732,7 @@ static int get_uint64_equal(QEMUFile *f, void *pv, size_t size)
     if (*v == v2) {
         return 0;
     }
+    error_report("%" PRIx64 " != %" PRIx64, *v, v2);
     return -EINVAL;
 }

@@ -748,6 +754,7 @@ static int get_uint8_equal(QEMUFile *f, void *pv, size_t size)
     if (*v == v2) {
         return 0;
     }
+    error_report("%x != %x", *v, v2);
     return -EINVAL;
 }

@@ -769,6 +776,7 @@ static int get_uint16_equal(QEMUFile *f, void *pv, size_t size)
     if (*v == v2) {
         return 0;
     }
+    error_report("%x != %x", *v, v2);
     return -EINVAL;
 }

-- 
2.7.4