KVM: s390: selftests: Add has device attr check to uc_attr_mem_limit selftest

JIRA: https://issues.redhat.com/browse/RHEL-113440

commit e376d95
Author: Christoph Schlameuss <schlameuss@linux.ibm.com>
Date:   Mon Dec 16 10:21:40 2024 +0100

    KVM: s390: selftests: Add has device attr check to uc_attr_mem_limit selftest

    Fixup the uc_attr_mem_limit test case to also cover the
    KVM_HAS_DEVICE_ATTR ioctl.

    Signed-off-by: Christoph Schlameuss <schlameuss@linux.ibm.com>
    Tested-by: Hariharan Mari <hari55@linux.ibm.com>
    Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
    Link: https://lore.kernel.org/r/20241216092140.329196-7-schlameuss@linux.ibm.com
    Message-ID: <20241216092140.329196-7-schlameuss@linux.ibm.com>
    Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>

Signed-off-by: Thomas Huth <thuth@redhat.com>

Author: huth

tools/testing/selftests/kvm/s390/ucontrol_test.c

@@ -206,10 +206,13 @@ TEST_F(uc_kvm, uc_attr_mem_limit)
 	struct kvm_device_attr attr = {
 		.group = KVM_S390_VM_MEM_CTRL,
 		.attr = KVM_S390_VM_MEM_LIMIT_SIZE,
-		.addr = (unsigned long)&limit,
+		.addr = (u64)&limit,
 	};
 	int rc;
 
+	rc = ioctl(self->vm_fd, KVM_HAS_DEVICE_ATTR, &attr);
+	EXPECT_EQ(0, rc);
+
 	rc = ioctl(self->vm_fd, KVM_GET_DEVICE_ATTR, &attr);
 	EXPECT_EQ(0, rc);
 	EXPECT_EQ(~0UL, limit);