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Tsirkin" , Igor Mammedov , Ani Sinha , Shannon Zhao , Paolo Bonzini , =?UTF-8?q?Daniel=20P=20=2E=20Berrang=C3=A9?= , Eduardo Habkost , Eric Blake , Markus Armbruster , Shameer Kolothum , Nicolin Chen , Matt Ochs , Nathan Chen Subject: [PATCH v2 1/8] hw/arm/smmuv3-accel: Check ATS compatibility between host and guest Date: Thu, 12 Mar 2026 14:03:20 -0700 Message-ID: <20260312210328.2016191-2-nathanc@nvidia.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260312210328.2016191-1-nathanc@nvidia.com> References: <20260312210328.2016191-1-nathanc@nvidia.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: BY5PR13CA0035.namprd13.prod.outlook.com (2603:10b6:a03:180::48) To DS2PR12MB9567.namprd12.prod.outlook.com (2603:10b6:8:27c::8) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS2PR12MB9567:EE_|EAYPR12MB999156:EE_ X-MS-Office365-Filtering-Correlation-Id: 05ea8a28-9cc0-44e1-3a6b-08de807ada9b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: permerror client-ip=2a01:111:f403:c10c::1; envelope-from=nathanc@nvidia.com; helo=SA9PR02CU001.outbound.protection.outlook.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FORGED_SPF_HELO=1, SPF_HELO_PASS=-0.001, SPF_NONE=0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development 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 @Nvidia.com) X-ZM-MESSAGEID: 1773349493205154100 Content-Type: text/plain; charset="utf-8" From: Nathan Chen Compare the host SMMUv3 ATS support bit with the guest SMMUv3 ATS support bit in IDR0 and fail the compatibility check if ATS support is opted as enabled on the guest SMMUv3 when it is not supported on host SMMUv3. Signed-off-by: Nathan Chen Reviewed-by: Eric Auger --- hw/arm/smmuv3-accel.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/hw/arm/smmuv3-accel.c b/hw/arm/smmuv3-accel.c index 17306cd04b..fe78ce69a5 100644 --- a/hw/arm/smmuv3-accel.c +++ b/hw/arm/smmuv3-accel.c @@ -101,6 +101,13 @@ smmuv3_accel_check_hw_compatible(SMMUv3State *s, smmuv3_oas_bits(FIELD_EX32(s->idr[5], IDR5, OAS))); return false; } + /* Check ATS value opted is compatible with Host SMMUv3 */ + if (FIELD_EX32(info->idr[0], IDR0, ATS) < + FIELD_EX32(s->idr[0], IDR0, ATS)) { + error_setg(errp, "Host SMMUv3 doesn't support Address Translation" + " Services"); + return false; + } =20 /* QEMU SMMUv3 supports GRAN4K/GRAN16K/GRAN64K translation granules */ if (FIELD_EX32(info->idr[5], IDR5, GRAN4K) !=3D --=20 2.43.0