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, 3 insertions, 8 deletions

diff --git a/tools/testing/selftests/kvm/access_tracking_perf_test.c b/tools/testing/selftests/kvm/access_tracking_perf_test.c
index 1c771378f7f4..1c2749b1481a 100644
--- a/tools/testing/selftests/kvm/access_tracking_perf_test.c
+++ b/tools/testing/selftests/kvm/access_tracking_perf_test.c
@@ -104,10 +104,7 @@ static uint64_t lookup_pfn(int pagemap_fd, struct kvm_vm *vm, uint64_t gva)
 		return 0;
 
 	pfn = entry & PAGEMAP_PFN_MASK;
-	if (!pfn) {
-		print_skip("Looking up PFNs requires CAP_SYS_ADMIN");
-		exit(KSFT_SKIP);
-	}
+	__TEST_REQUIRE(pfn, "Looking up PFNs requires CAP_SYS_ADMIN");
 
 	return pfn;
 }
@@ -380,10 +377,8 @@ int main(int argc, char *argv[])
 	}
 
 	page_idle_fd = open("/sys/kernel/mm/page_idle/bitmap", O_RDWR);
-	if (page_idle_fd < 0) {
-		print_skip("CONFIG_IDLE_PAGE_TRACKING is not enabled");
-		exit(KSFT_SKIP);
-	}
+	__TEST_REQUIRE(page_idle_fd >= 0,
+		       "CONFIG_IDLE_PAGE_TRACKING is not enabled");
 	close(page_idle_fd);
 
 	for_each_guest_mode(run_test, &params);