test(vmclock): enable skipped tests

We now apply backported patches that add support for VMClock on Aarch64
systems via DT bindings, so enable tests for Aarch64 as well.

Moreover, backported patches add support for the poll() system calls
family, so enable the relevant test.

Signed-off-by: Babis Chalios <bchalios@amazon.es>

Author: bchalios

tests/integration_tests/functional/test_vmclock.py

@@ -2,8 +2,6 @@
 # SPDX-License-Identifier: Apache-2.0
 """Test VMclock device emulation"""
 
-import platform
-
 import pytest
 
 
@@ -50,10 +48,6 @@ def parse_vmclock_from_poll(vm, expected_notifications):
     return dict(item.split(": ") for item in fields if item.startswith("VMCLOCK"))
 
 
-@pytest.mark.skipif(
-    platform.machine() != "x86_64",
-    reason="VMClock device is currently supported only on x86 systems",
-)
 @pytest.mark.parametrize("use_mmap", [False, True], ids=["read()", "mmap()"])
 def test_vmclock_read_fields(vm_with_vmclock, use_mmap):
     """Make sure that we expose the expected values in the VMclock struct"""
@@ -71,10 +65,6 @@ def test_vmclock_read_fields(vm_with_vmclock, use_mmap):
     assert vmclock["VMCLOCK_VM_GENERATION_COUNTER"] == "0"
 
 
-@pytest.mark.skipif(
-    platform.machine() != "x86_64",
-    reason="VMClock device is currently supported only on x86 systems",
-)
 @pytest.mark.parametrize("use_mmap", [False, True], ids=["read()", "mmap()"])
 def test_snapshot_update(vm_with_vmclock, microvm_factory, snapshot_type, use_mmap):
     """Test that `disruption_marker` and `vm_generation_counter` are updated
@@ -98,10 +88,6 @@ def test_snapshot_update(vm_with_vmclock, microvm_factory, snapshot_type, use_mm
         assert vmclock["VMCLOCK_VM_GENERATION_COUNTER"] == f"{i+1}"
 
 
-# TODO: remove this skip when we backport VMClock snapshot safety patches to 5.10 and 6.1
-@pytest.mark.skip(
-    reason="Skip until we get guest microVM kernels with support for the notification mechanism",
-)
 def test_vmclock_notifications(vm_with_vmclock, microvm_factory, snapshot_type):
     """Test that Firecracker will send a notification on snapshot load"""
     basevm = vm_with_vmclock