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[88.187.86.199]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4535e97a908sm142235035e9.4.2025.06.23.05.05.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 23 Jun 2025 05:05:36 -0700 (PDT) Message-ID: <424c91ee-f5cb-40a1-b1bd-3f0648ae83f5@linaro.org> Date: Mon, 23 Jun 2025 14:05:35 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 23/26] tests/functional: Restrict nexted Aarch64 Xen test to TCG From: =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= To: Thomas Huth , qemu-devel@nongnu.org, "open list:X86 Xen CPUs" , David Woodhouse Cc: Leif Lindholm , Richard Henderson , Radoslaw Biernacki , Alexander Graf , Paolo Bonzini , =?UTF-8?Q?Marc-Andr=C3=A9_Lureau?= , Phil Dennis-Jordan , =?UTF-8?Q?Alex_Benn=C3=A9e?= , Bernhard Beschow , Cleber Rosa , Peter Maydell , Cameron Esfahani , kvm@vger.kernel.org, qemu-arm@nongnu.org, Eric Auger , =?UTF-8?Q?Daniel_P=2E_Berrang=C3=A9?= , Roman Bolshakov , John Snow References: <20250620130709.31073-1-philmd@linaro.org> <20250620130709.31073-24-philmd@linaro.org> <497fc7b1-dfd2-49ad-938c-47fca1153590@redhat.com> Content-Language: en-US In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::42a; envelope-from=philmd@linaro.org; helo=mail-wr1-x42a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 23/6/25 13:59, Philippe Mathieu-Daudé wrote: > 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 >>> --- >>>   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'll update the description with: Currently QEMU only support accelerating EL0 and EL1, so features requiring EL2 (like virtualization) or EL3 must be emulated with TCG. > 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.