[v2,3/4] KVM: arm64: selftests: Refactor debug-exceptions to make it amenable to new test cases

Commit Message

Reiji Watanabe Sept. 17, 2022, 1:05 a.m. UTC

Split up the current test into a helper, but leave the debug version
checking in main(), to make it convenient to add a new debug exception
test case in a subsequent patch.

Signed-off-by: Reiji Watanabe <[e-mail]>
---
 .../selftests/kvm/aarch64/debug-exceptions.c   | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

Patch

diff --git a/tools/testing/selftests/kvm/aarch64/debug-exceptions.c b/tools/testing/selftests/kvm/aarch64/debug-exceptions.c
index 2ee35cf9801e..e6e83b895fd5 100644
--- a/tools/testing/selftests/kvm/aarch64/debug-exceptions.c
+++ b/tools/testing/selftests/kvm/aarch64/debug-exceptions.c
@@ -246,7 +246,7 @@  static int debug_version(struct kvm_vcpu *vcpu)
 	return id_aa64dfr0 & 0xf;
 }
 
-int main(int argc, char *argv[])
+static void test_guest_debug_exceptions(void)
 {
 	struct kvm_vcpu *vcpu;
 	struct kvm_vm *vm;
@@ -259,9 +259,6 @@  int main(int argc, char *argv[])
 	vm_init_descriptor_tables(vm);
 	vcpu_init_descriptor_tables(vcpu);
 
-	__TEST_REQUIRE(debug_version(vcpu) >= 6,
-		       "Armv8 debug architecture not supported.");
-
 	vm_install_sync_handler(vm, VECTOR_SYNC_CURRENT,
 				ESR_EC_BRK_INS, guest_sw_bp_handler);
 	vm_install_sync_handler(vm, VECTOR_SYNC_CURRENT,
@@ -294,5 +291,18 @@  int main(int argc, char *argv[])
 
 done:
 	kvm_vm_free(vm);
+}
+
+int main(int argc, char *argv[])
+{
+	struct kvm_vcpu *vcpu;
+	struct kvm_vm *vm;
+
+	vm = vm_create_with_one_vcpu(&vcpu, guest_code);
+	__TEST_REQUIRE(debug_version(vcpu) >= 6,
+		       "Armv8 debug architecture not supported.");
+	kvm_vm_free(vm);
+	test_guest_debug_exceptions();
+
 	return 0;
 }