KVM: selftests: Add TEST_REQUIRE macros to reduce skipping copy+paste

Add TEST_REQUIRE() and __TEST_REQUIRE() to replace the myriad open coded
instances of selftests exiting with KSFT_SKIP after printing an
informational message.  In addition to reducing the amount of boilerplate
code in selftests, the UPPERCASE macro names make it easier to visually
identify a test's requirements.

Convert usage that erroneously uses something other than print_skip()
and/or "exits" with '0' or some other non-KSFT_SKIP value.

Intentionally drop a kvm_vm_free() in aarch64/debug-exceptions.c as part
of the conversion.  All memory and file descriptors are freed on process
exit, so the explicit free is superfluous.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/tools/testing/selftests/kvm/include/test_util.h b/tools/testing/selftests/kvm/include/test_util.h
index 99e0dcdc923f..493b2a799a61 100644
--- a/tools/testing/selftests/kvm/include/test_util.h
+++ b/tools/testing/selftests/kvm/include/test_util.h
@@ -34,6 +34,15 @@ static inline int _no_printf(const char *format, ...) { return 0; }
 #endif
 
 void print_skip(const char *fmt, ...) __attribute__((format(printf, 1, 2)));
+#define __TEST_REQUIRE(f, fmt, ...)		\
+do {						\
+	if (!(f)) {				\
+		print_skip(fmt, ##__VA_ARGS__);	\
+		exit(KSFT_SKIP);		\
+	}					\
+} while (0)
+
+#define TEST_REQUIRE(f) __TEST_REQUIRE(f, "Requirement not met: %s", #f)
 
 ssize_t test_write(int fd, const void *buf, size_t count);
 ssize_t test_read(int fd, void *buf, size_t count);