Add TDX huge resource test case

KVM/qemu/td_huge_resource.cfg

@@ -0,0 +1,10 @@
+- td_huge_resource:
+    virt_test_type = qemu
+    type = td_huge_resource
+    vm_accelerator = kvm
+    machine_type_extra_params = "kernel-irqchip=split"
+    vm_secure_guest_type = tdx
+    start_vm = no
+    vga = std
+    auto_cpu_model = "no"
+    cpu_model = host

KVM/qemu/tests/td_huge_resource.py

@@ -0,0 +1,47 @@
+#!/usr/bin/python3
+
+# SPDX-License-Identifier: GPL-2.0-only
+# Copyright (c) 2024 Intel Corporation
+
+# Author: Xudong Hao <[email protected]>
+#
+# History:  Jun. 2024 - Xudong Hao - creation
+from avocado.utils import cpu
+
+from virttest import env_process
+from virttest import error_context
+from virttest import utils_misc
+
+
+# This decorator makes the test function aware of context strings
+@error_context.context_aware
+def run(test, params, env):
+    """
+    Boot TD with huge CPU and memory:
+    1) Caculate the host online CPU number and usable memory size
+    2) Boot up one TDVM with half resource of host
+    3) Shutdown TDVM
+
+    :param test: QEMU test object
+    :param params: Dictionary with the test parameters
+    :param env: Dictionary with test environment
+    """
+
+    timeout = params.get_numeric("login_timeout", 240)
+    params["start_vm"] = 'yes'
+    host_cpu = cpu.online_count()
+    host_free_mem = utils_misc.get_usable_memory_size()
+    params['smp'] = params['vcpu_maxcpus'] = host_cpu//2
+    params['mem'] = host_free_mem//2
+
+    error_context.context("Booting TDVM with large CPU and memory", test.log.info)
+    vm_name = params['main_vm']
+    try:
+        env_process.preprocess_vm(test, params, env, vm_name)
+    except:
+        raise
+    vm = env.get_vm(vm_name)
+    vm.verify_alive()
+    session = vm.wait_for_login(timeout=timeout)
+    vm.destroy()
+    session.close()