[PATCH v2 1/4] KVM: s390: selftests: Use TAP interface in the memop test

[Thomas Huth <thuth@xxxxxxxxxx>]

The memop test currently does not have any output (unless one of the
TEST_ASSERT statement fails), so it's hard to say for a user whether
a certain new sub-test has been included in the binary or not. Let's
make this a little bit more user-friendly and include some TAP output
via the kselftests.h interface.

Signed-off-by: Thomas Huth <thuth@xxxxxxxxxx>
---
 tools/testing/selftests/kvm/s390x/memop.c | 90 ++++++++++++++++++-----
 1 file changed, 73 insertions(+), 17 deletions(-)

diff --git a/tools/testing/selftests/kvm/s390x/memop.c b/tools/testing/selftests/kvm/s390x/memop.c
index b04c2c1b3c30..ad9fe86c0592 100644
--- a/tools/testing/selftests/kvm/s390x/memop.c
+++ b/tools/testing/selftests/kvm/s390x/memop.c
@@ -12,6 +12,7 @@
 
 #include "test_util.h"
 #include "kvm_util.h"
+#include "kselftest.h"
 
 enum mop_target {
 	LOGICAL,
@@ -648,33 +649,88 @@ static void test_errors(void)
 	kvm_vm_free(t.kvm_vm);
 }
 
+struct testdef {
+	const char *name;
+	void (*test)(void);
+	int cap;
+} testlist[] = {
+	{
+		.name = "simple copy",
+		.test = test_copy,
+	},
+	{
+		.name = "generic error checks",
+		.test = test_errors,
+	},
+	{
+		.name = "copy with storage keys",
+		.test = test_copy_key,
+		.cap = KVM_CAP_S390_MEM_OP_EXTENSION,
+	},
+	{
+		.name = "copy with key storage protection override",
+		.test = test_copy_key_storage_prot_override,
+		.cap = KVM_CAP_S390_MEM_OP_EXTENSION,
+	},
+	{
+		.name = "copy with key fetch protection",
+		.test = test_copy_key_fetch_prot,
+		.cap = KVM_CAP_S390_MEM_OP_EXTENSION,
+	},
+	{
+		.name = "copy with key fetch protection override",
+		.test = test_copy_key_fetch_prot_override,
+		.cap = KVM_CAP_S390_MEM_OP_EXTENSION,
+	},
+	{
+		.name = "error checks with key",
+		.test = test_errors_key,
+		.cap = KVM_CAP_S390_MEM_OP_EXTENSION,
+	},
+	{
+		.name = "error checks with key storage protection override",
+		.test = test_errors_key_storage_prot_override,
+		.cap = KVM_CAP_S390_MEM_OP_EXTENSION,
+	},
+	{
+		.name = "error checks without key fetch prot override",
+		.test = test_errors_key_fetch_prot_override_not_enabled,
+		.cap = KVM_CAP_S390_MEM_OP_EXTENSION,
+	},
+	{
+		.name = "error checks with key fetch prot override",
+		.test = test_errors_key_fetch_prot_override_enabled,
+		.cap = KVM_CAP_S390_MEM_OP_EXTENSION,
+	},
+};
+
 int main(int argc, char *argv[])
 {
-	int memop_cap, extension_cap;
+	int memop_cap, extension_cap, idx;
 
 	setbuf(stdout, NULL);	/* Tell stdout not to buffer its content */
 
+	ksft_print_header();
+
 	memop_cap = kvm_check_cap(KVM_CAP_S390_MEM_OP);
 	extension_cap = kvm_check_cap(KVM_CAP_S390_MEM_OP_EXTENSION);
 	if (!memop_cap) {
-		print_skip("CAP_S390_MEM_OP not supported");
-		exit(KSFT_SKIP);
+		ksft_exit_skip("CAP_S390_MEM_OP not supported.\n");
 	}
 
-	test_copy();
-	if (extension_cap > 0) {
-		test_copy_key();
-		test_copy_key_storage_prot_override();
-		test_copy_key_fetch_prot();
-		test_copy_key_fetch_prot_override();
-		test_errors_key();
-		test_errors_key_storage_prot_override();
-		test_errors_key_fetch_prot_override_not_enabled();
-		test_errors_key_fetch_prot_override_enabled();
-	} else {
-		print_skip("storage key memop extension not supported");
+	ksft_set_plan(ARRAY_SIZE(testlist));
+
+	for (idx = 0; idx < ARRAY_SIZE(testlist); idx++) {
+		if (!testlist[idx].cap || (extension_cap &&
+		    testlist[idx].cap == KVM_CAP_S390_MEM_OP_EXTENSION)) {
+			testlist[idx].test();
+			ksft_test_result_pass("%s\n", testlist[idx].name);
+		} else {
+			ksft_test_result_skip("%s - capability %d not supported\n",
+					      testlist[idx].name,
+					      testlist[idx].cap);
+		}
 	}
-	test_errors();
 
-	return 0;
+	ksft_finished();
 }
-- 
2.27.0