[PULL 1/3] tests/unit/test-smp-parse: Restore MachineClass fields after modifying

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

There is a single MachineClass object, registered with
type_register_static(&smp_machine_info). Since the same
object is used multiple times (an MachineState object
is instantiated in both test_generic and test_with_dies),
we should restore its internal state after modifying for
the test purpose.

Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Yanan Wang <wangyanan55@huawei.com>
Tested-by: Yanan Wang <wangyanan55@huawei.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211115145900.2531865-2-philmd@redhat.com>
---
 tests/unit/test-smp-parse.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/tests/unit/test-smp-parse.c b/tests/unit/test-smp-parse.c
index cbe0c990494..47774c1ee2a 100644
--- a/tests/unit/test-smp-parse.c
+++ b/tests/unit/test-smp-parse.c
@@ -512,7 +512,7 @@ static void test_generic(void)
         smp_parse_test(ms, data, true);
     }
 
-    /* Reset the supported min CPUs and max CPUs */
+    /* Force invalid min CPUs and max CPUs */
     mc->min_cpus = 2;
     mc->max_cpus = 511;
 
@@ -523,6 +523,10 @@ static void test_generic(void)
         smp_parse_test(ms, data, false);
     }
 
+    /* Reset the supported min CPUs and max CPUs */
+    mc->min_cpus = MIN_CPUS;
+    mc->max_cpus = MAX_CPUS;
+
     object_unref(obj);
 }
 
@@ -536,6 +540,7 @@ static void test_with_dies(void)
     int i;
 
     smp_machine_class_init(mc);
+    /* Force the SMP compat properties */
     mc->smp_props.dies_supported = true;
 
     for (i = 0; i < ARRAY_SIZE(data_generic_valid); i++) {
@@ -575,6 +580,9 @@ static void test_with_dies(void)
         smp_parse_test(ms, data, false);
     }
 
+    /* Restore the SMP compat properties */
+    mc->smp_props.dies_supported = false;
+
     object_unref(obj);
 }
 
-- 
2.31.1