KVM: s390: selftest: memop: Move testlist into main

This allows checking if the necessary requirements for a test case are
met via an arbitrary expression. In particular, it is easy to check if
certain bits are set in the memop extension capability.
Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Link: https://lore.kernel.org/r/20230206164602.138068-4-scgl@linux.ibm.com
Message-Id: <20230206164602.138068-4-scgl@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

tools/testing/selftests/kvm/s390x/memop.c

@@ -690,85 +690,86 @@ static void test_errors(void)
 	kvm_vm_free(t.kvm_vm);
 }
 
-struct testdef {
+
+int main(int argc, char *argv[])
+{
+	int extension_cap, idx;
+
+	TEST_REQUIRE(kvm_has_cap(KVM_CAP_S390_MEM_OP));
+	extension_cap = kvm_check_cap(KVM_CAP_S390_MEM_OP_EXTENSION);
+
+	struct testdef {
 		const char *name;
 		void (*test)(void);
-	int extension;
-} testlist[] = {
+		bool requirements_met;
+	} testlist[] = {
 		{
 			.name = "simple copy",
 			.test = test_copy,
+			.requirements_met = true,
 		},
 		{
 			.name = "generic error checks",
 			.test = test_errors,
+			.requirements_met = true,
 		},
 		{
 			.name = "copy with storage keys",
 			.test = test_copy_key,
-		.extension = 1,
+			.requirements_met = extension_cap > 0,
 		},
 		{
 			.name = "copy with key storage protection override",
 			.test = test_copy_key_storage_prot_override,
-		.extension = 1,
+			.requirements_met = extension_cap > 0,
 		},
 		{
 			.name = "copy with key fetch protection",
 			.test = test_copy_key_fetch_prot,
-		.extension = 1,
+			.requirements_met = extension_cap > 0,
 		},
 		{
 			.name = "copy with key fetch protection override",
 			.test = test_copy_key_fetch_prot_override,
-		.extension = 1,
+			.requirements_met = extension_cap > 0,
 		},
 		{
 			.name = "error checks with key",
 			.test = test_errors_key,
-		.extension = 1,
+			.requirements_met = extension_cap > 0,
 		},
 		{
 			.name = "termination",
 			.test = test_termination,
-		.extension = 1,
+			.requirements_met = extension_cap > 0,
 		},
 		{
 			.name = "error checks with key storage protection override",
 			.test = test_errors_key_storage_prot_override,
-		.extension = 1,
+			.requirements_met = extension_cap > 0,
 		},
 		{
 			.name = "error checks without key fetch prot override",
 			.test = test_errors_key_fetch_prot_override_not_enabled,
-		.extension = 1,
+			.requirements_met = extension_cap > 0,
 		},
 		{
 			.name = "error checks with key fetch prot override",
 			.test = test_errors_key_fetch_prot_override_enabled,
-		.extension = 1,
+			.requirements_met = extension_cap > 0,
 		},
-};
-
-int main(int argc, char *argv[])
-{
-	int extension_cap, idx;
-
-	TEST_REQUIRE(kvm_has_cap(KVM_CAP_S390_MEM_OP));
+	};
 
 	ksft_print_header();
-
 	ksft_set_plan(ARRAY_SIZE(testlist));
 
-	extension_cap = kvm_check_cap(KVM_CAP_S390_MEM_OP_EXTENSION);
 	for (idx = 0; idx < ARRAY_SIZE(testlist); idx++) {
-		if (extension_cap >= testlist[idx].extension) {
+		if (testlist[idx].requirements_met) {
 			testlist[idx].test();
 			ksft_test_result_pass("%s\n", testlist[idx].name);
 		} else {
-			ksft_test_result_skip("%s - extension level %d not supported\n",
-					      testlist[idx].name,
-					      testlist[idx].extension);
+			ksft_test_result_skip("%s - requirements not met (kernel has extension cap %#x)\n",
+					      testlist[idx].name, extension_cap);
 		}
 	}