tests/functional: Add hvf_available() helper

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-id: 20250623121845.7214-26-philmd@linaro.org
[PMM: tweaks to satisfy the python linter CI job]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

python/qemu/utils/__init__.py

@@ -23,13 +23,19 @@ import textwrap
 from typing import Optional
 
 # pylint: disable=import-error
-from .accel import kvm_available, list_accel, tcg_available
+from .accel import (
+    hvf_available,
+    kvm_available,
+    list_accel,
+    tcg_available,
+)
 
 
 __all__ = (
     'VerboseProcessError',
     'add_visual_margin',
     'get_info_usernet_hostfwd_port',
+    'hvf_available',
     'kvm_available',
     'list_accel',
     'tcg_available',

python/qemu/utils/accel.py

@@ -82,3 +82,12 @@ def tcg_available(qemu_bin: str) -> bool:
     @param qemu_bin (str): path to the QEMU binary
     """
     return 'tcg' in list_accel(qemu_bin)
+
+
+def hvf_available(qemu_bin: str) -> bool:
+    """
+    Check if HVF is available.
+
+    @param qemu_bin (str): path to the QEMU binary
+    """
+    return 'hvf' in list_accel(qemu_bin)