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[2001:14ba:a0c3:3a00:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-337f5032df6sm9373431fa.39.2025.09.03.03.51.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 Sep 2025 03:51:55 -0700 (PDT) From: Dmitry Baryshkov Date: Wed, 03 Sep 2025 13:51:50 +0300 Subject: [PATCH v2 2/4] drm/msm: stop supporting no-IOMMU configuration Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250903-msm-no-iommu-v2-2-993016250104@oss.qualcomm.com> References: <20250903-msm-no-iommu-v2-0-993016250104@oss.qualcomm.com> In-Reply-To: <20250903-msm-no-iommu-v2-0-993016250104@oss.qualcomm.com> To: Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , Antonino Maniscalco , Konrad Dybcio Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1138; i=dmitry.baryshkov@oss.qualcomm.com; h=from:subject:message-id; bh=VVcVNBxTp77RP3lwxz41p40biwqdBr8Vq4owPjMXldU=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBouB3GdCx4xIfhZaEHEPNvhz+Nhq0FHAFd+JqVM hN82WJGwZeJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCaLgdxgAKCRCLPIo+Aiko 1QDjB/4zbCpsE9Fapn0XIU3XUXuutlBGlGPfODt0yYr1IF7hO8FNc+gXhAPhbcemMkO4je6iUqb aYGyplYUcCTYuPaGRX3ot14Yksn6QNBF9ljJkoSmhHR9/GGcacndWC7L05c2vqgSE+SRJRfFG2W Zn+JG44gcPcJ7Wh0bCL5tXMjCttXjwY5VR/DN1QesdUuAx8ZMlvqdB/INnQc22yZ+0rJ+usDuIK tu5/Xivh7lZpD6vLk3G5ojERUsV3k8V0Wr4XWfsZrtG2GKtWa7OoG7j1cQ1ZWxSkMfWTgPPot+p GcLUTZOAMGTKDJLemyZzj4bxZC+N37L/0pVsp2wlLN5xVUEe X-Developer-Key: i=dmitry.baryshkov@oss.qualcomm.com; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODMwMDAzMiBTYWx0ZWRfXyJ4QBFlSIGNG xf+YPgb/EMc/F5OM30SbiWve7QMoaCSYFQt+YyKSBSAUhSfY3c3Vu8PLLlu+zQKMshadv/xPGBL rnQE4Dksl9OlpByumg4mVakOCK1VkzSAYCbkMVct6xHigpFf24QDRI/X6bPdIAf/8D15S8+1LV4 cIOWqj87NzbVEr1osHt69VyHz9e5gQVyxMbV7rJC5SOUccWmAiS1mB4aO9nrkhfgMQwtefUSAqM lU7HzUSQj73VylijcSqMGKBPYBpHqVRZPrlV7j+Lks83n86OwCLlzSNzuJcmB7pWv8wRSlBN435 kh9llLTcmb7OcMLeMAVXAzVWEeKPWX1wWDApH/Dsg79t3/LR/DImJcPdgP32Sxu6Emyh1JgWmc9 Fe/OOukg X-Proofpoint-ORIG-GUID: dP_TXUAsvFhUD8LEp7ETUNrn6CHYd6WX X-Proofpoint-GUID: dP_TXUAsvFhUD8LEp7ETUNrn6CHYd6WX X-Authority-Analysis: v=2.4 cv=M9NNKzws c=1 sm=1 tr=0 ts=68b81dce cx=c_pps a=wEM5vcRIz55oU/E2lInRtA==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=yJojWOMRYYMA:10 a=EUspDBNiAAAA:8 a=Y8FF1qk0yU6lqu3lwJcA:9 a=QEXdDO2ut3YA:10 a=OIgjcC2v60KrkQgK7BGD:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-03_06,2025-08-28_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 adultscore=0 spamscore=0 priorityscore=1501 malwarescore=0 clxscore=1015 suspectscore=0 phishscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508300032 With the switch to GPUVM the msm driver no longer supports the no-IOMMU configurations (even without the actual GPU). Return an error in case we face the lack of the IOMMU. Fixes: 111fdd2198e6 ("drm/msm: drm_gpuvm conversion") Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/msm/msm_kms.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_kms.c b/drivers/gpu/drm/msm/msm_kms.c index 56828d218e88a5fa597755c8ea20da781929386c..4c4dcb095c4df97de42d0673aa2= 842010a249dca 100644 --- a/drivers/gpu/drm/msm/msm_kms.c +++ b/drivers/gpu/drm/msm/msm_kms.c @@ -195,14 +195,13 @@ struct drm_gpuvm *msm_kms_init_vm(struct drm_device *= dev) iommu_dev =3D mdp_dev; else iommu_dev =3D mdss_dev; - mmu =3D msm_iommu_disp_new(iommu_dev, 0); if (IS_ERR(mmu)) return ERR_CAST(mmu); =20 if (!mmu) { - drm_info(dev, "no IOMMU, fallback to phys contig buffers for scanout\n"); - return NULL; + drm_info(dev, "no IOMMU, bailing out\n"); + return ERR_PTR(-ENODEV); } =20 vm =3D msm_gem_vm_create(dev, mmu, "mdp_kms", --=20 2.47.2