tests/unit/test-smp-parse: Use CPU number macros in invalid topology case

Use MAX_CPUS/MIN_CPUS macros in invalid topology case. This gives us the
flexibility to change the maximum and minimum CPU limits.

Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Tested-by: Xiaoling Song <xiaoling.song@intel.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20240308160148.3130837-6-zhao1.liu@linux.intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

tests/unit/test-smp-parse.c

@@ -323,15 +323,21 @@ static const struct SMPTestData data_generic_invalid[] = {
                         "sockets (2) * cores (4) * threads (2) "
                         "== maxcpus (16) < smp_cpus (18)",
     }, {
-        /* config: -smp 1
-         * should tweak the supported min CPUs to 2 for testing */
-        .config = SMP_CONFIG_GENERIC(T, 1, F, 0, F, 0, F, 0, F, 0),
+        /*
+         * config: -smp 1
+         * The test machine should tweak the supported min CPUs to
+         * 2 (MIN_CPUS + 1) for testing.
+         */
+        .config = SMP_CONFIG_GENERIC(T, MIN_CPUS, F, 0, F, 0, F, 0, F, 0),
         .expect_error = "Invalid SMP CPUs 1. The min CPUs supported "
                         "by machine '" SMP_MACHINE_NAME "' is 2",
     }, {
-        /* config: -smp 512
-         * should tweak the supported max CPUs to 511 for testing */
-        .config = SMP_CONFIG_GENERIC(T, 512, F, 0, F, 0, F, 0, F, 0),
+        /*
+         * config: -smp 512
+         * The test machine should tweak the supported max CPUs to
+         * 511 (MAX_CPUS - 1) for testing.
+         */
+        .config = SMP_CONFIG_GENERIC(T, MAX_CPUS, F, 0, F, 0, F, 0, F, 0),
         .expect_error = "Invalid SMP CPUs 512. The max CPUs supported "
                         "by machine '" SMP_MACHINE_NAME "' is 511",
     },
@@ -575,8 +581,8 @@ static void machine_generic_invalid_class_init(ObjectClass *oc, void *data)
     MachineClass *mc = MACHINE_CLASS(oc);
 
     /* Force invalid min CPUs and max CPUs */
-    mc->min_cpus = 2;
-    mc->max_cpus = 511;
+    mc->min_cpus = MIN_CPUS + 1;
+    mc->max_cpus = MAX_CPUS - 1;
 }
 
 static void machine_with_dies_class_init(ObjectClass *oc, void *data)