Re: [PATCH v2 23/26] tests/functional: Restrict nexted Aarch64 Xen test to TCG

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

On 23/6/25 10:11, Thomas Huth wrote:
> On 20/06/2025 15.07, Philippe Mathieu-Daudé wrote:
>> On macOS this test fails:
>>
>>    qemu-system-aarch64: mach-virt: HVF does not support providing 
>> Virtualization extensions to the guest CPU
>>
>> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
>> ---
>>   tests/functional/test_aarch64_xen.py | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/tests/functional/test_aarch64_xen.py b/tests/functional/ 
>> test_aarch64_xen.py
>> index 339904221b0..261d796540d 100755
>> --- a/tests/functional/test_aarch64_xen.py
>> +++ b/tests/functional/test_aarch64_xen.py
>> @@ -33,6 +33,7 @@ def launch_xen(self, xen_path):
>>           """
>>           Launch Xen with a dom0 guest kernel
>>           """
>> +        self.require_accelerator("tcg") # virtualization=on
> 
> What about kvm (or xen) as accelerator? Would that work?

IIUC this tests boots a nested Xen guest running at Aarch64 EL2,
and at this point we can only run EL2/EL3 on TCG. HVF and KVM
can not for now (we are working on it).

I don't know if Xen can accelerate EL2, it would need support for
such hardware (like the Apple Silicon M4). Cc'ing Xen folks to
figure it out.