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Tsirkin" , Ani Sinha , Cameron Esfahani , Mohamed Mediouni Subject: [PATCH v5 08/13] hw/arm: virt: cleanly fail on attempt to use the platform vGIC together with ITS Date: Mon, 28 Jul 2025 15:41:09 +0200 Message-Id: <20250728134114.77545-9-mohamed@unpredictable.fr> X-Mailer: git-send-email 2.39.5 (Apple Git-154) In-Reply-To: <20250728134114.77545-1-mohamed@unpredictable.fr> References: <20250728134114.77545-1-mohamed@unpredictable.fr> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzI4MDEwMSBTYWx0ZWRfXwwUaBYlV/YvV PTvo4RJqI2f/WpoYVYyBxJGZAk/ujktDzbDt26VoR8c5xNmFWiB0tv2qhiXkfn5XzbPEhYoeETk C+ApqdOOnZSXJv9mBSetC3HGOhZTR15z5lDYiN9uClfdPRIqJuZZNYPKD/X9/MmyykVAnfNarzz d6MqaQ1xQHXZkKxmt/zG04hRfpGBatYwuANTBG9TFjNmC8Q4QhXpptstmquflLLyeVWrL8XQlus UkD79V5Xscim8KRiFVyTYhNbsfM7yXHaOgCszDahUti1j9I4/bEcQkcl7r8VJgaB3gWtmfmZo= X-Proofpoint-GUID: cc6peUVDvD9J9IhEie9tVw1GigIk7ENC X-Proofpoint-ORIG-GUID: cc6peUVDvD9J9IhEie9tVw1GigIk7ENC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-07-28_03,2025-07-28_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 suspectscore=0 malwarescore=0 bulkscore=0 phishscore=0 clxscore=1030 mlxlogscore=881 spamscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.22.0-2506270000 definitions=main-2507280101 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=57.103.84.73; envelope-from=mohamed@unpredictable.fr; helo=outbound.qs.icloud.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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_LOW=-0.7, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @unpredictable.fr) X-ZM-MESSAGEID: 1753710272935116600 Content-Type: text/plain; charset="utf-8" Apple's platform vGIC doesn't support ITS. Deal with this by reporting to t= he user and not creating the ITS device. Signed-off-by: Mohamed Mediouni --- hw/arm/virt.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 91d8cd9363..005e923a22 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -740,6 +740,16 @@ static void create_its(VirtMachineState *vms) return; } =20 + if (hvf_enabled() && hvf_irqchip_in_kernel() && vms->tcg_its) { + /* + * In the HVF case, inform the user that they can use the + * user-mode GIC if they want to have an ITS. + */ + info_report("ITS not supported without kernel-irqchip=3Doff on HVF= "); + info_report("Disabling ITS"); + return; + } + dev =3D qdev_new(its_class_name()); =20 object_property_set_link(OBJECT(dev), "parent-gicv3", OBJECT(vms->gic), --=20 2.39.5 (Apple Git-154)