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[2001:14ba:a0c3:3a00:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-556383bb555sm920621e87.20.2025.07.06.03.50.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 06 Jul 2025 03:50:46 -0700 (PDT) From: Dmitry Baryshkov Date: Sun, 06 Jul 2025 13:50:37 +0300 Subject: [PATCH 2/3] 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: <20250706-msm-no-iommu-v1-2-9e8274b30c33@oss.qualcomm.com> References: <20250706-msm-no-iommu-v1-0-9e8274b30c33@oss.qualcomm.com> In-Reply-To: <20250706-msm-no-iommu-v1-0-9e8274b30c33@oss.qualcomm.com> To: Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , Antonino Maniscalco 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=1053; i=dmitry.baryshkov@oss.qualcomm.com; h=from:subject:message-id; bh=CVAxMJ583rYEGC1+K/sUzP+WPoNKZGaqzP5oZqg2sAw=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBoalUB1+xuuKCza8FRxLDaIpuk4/9nNPUhbOJSM jVRNJAo8N6JATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCaGpVAQAKCRCLPIo+Aiko 1UkMB/9kTumwrySnCjd4VSt41UeB4BUW/u21VLeSik9PtHt1VuBLn6bQIhc2174IcmTnc1lQ0PQ SP8DPvssNDhjdb25NISWlpA22w5hYNeZnoBcwZ1hspvX01vSaHDyavJXQWSsfQAruHog8hEMsjY K+USDp5d+IN6DrP0nM3EJ6/beHJ6aDOyRiM3l9A5IXL7B3Xhe1LS20yXeokJ4aICVQf1vyfzSyC cvagS7NZpMysbO+OeFMjwPvp+N1nXsYGzKCR4R7UKBWs9QeyB/5afJLgsMOCBq9wNURns5Pz2od UJXe5YkdA+va3Df2WP+dyqGhfFsDNpcvDBspBEq4LKD/SDGD X-Developer-Key: i=dmitry.baryshkov@oss.qualcomm.com; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzA2MDA2NyBTYWx0ZWRfX1/6pvuR9D+iy jNN0Czi4HVKGrkQ4umUJFkHj5QyEZtqsmpF54by8g8sAgFHfaO2k3g8P1jcnI1RQqHIiUQ1DNtm yiAVqg6cmpGDrTw6hhNihm4cok/IuMxMtByviJ7MrAVJGhu8WEYBuI/i0YK+oPB/lyld/WtLHjL E4unqLuijJAn6bkcbADzatnarhfxSNkpozSB3XNsY0epHqydCm5jpqru0IGrzAQxW3VhnMEzYa/ To/6RedXRmkS691rJyARgdCl7smpOQlCdNz5RA3yr7JrML/RLywSQ24MMnT5zK9y8a7YVZ7hHeJ Hrc4dfAuSErmOQyB6woU/ZZrrXk0m0WuU20XEYD88BcjFFVHKKWPG0rJUdak2jirYGyjzRZ144i tYG70dQDB/1ULwNDZiEyaYLV2UQJwKBiEuJzJXVWSMB5ls8MiO6F/IuD5kPTBGjyI4Tae0Ze X-Proofpoint-GUID: E12oofb-dPzw9_Hks62yeHJyfEzsJjrL X-Proofpoint-ORIG-GUID: E12oofb-dPzw9_Hks62yeHJyfEzsJjrL X-Authority-Analysis: v=2.4 cv=SOBCVPvH c=1 sm=1 tr=0 ts=686a5509 cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=Wb1JkmetP80A:10 a=EUspDBNiAAAA:8 a=bqLZAy-zUTJ7f3hpqcwA:9 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.7,FMLib:17.12.80.40 definitions=2025-07-04_07,2025-07-04_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 lowpriorityscore=0 bulkscore=0 impostorscore=0 mlxlogscore=999 mlxscore=0 phishscore=0 malwarescore=0 adultscore=0 suspectscore=0 spamscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2507060067 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 for an MDP4 device. Fixes: 111fdd2198e6 ("drm/msm: drm_gpuvm conversion") Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/msm/msm_kms.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_kms.c b/drivers/gpu/drm/msm/msm_kms.c index 6889f1c1e72121dcc735fa460ea04cdab11c6705..2e2ab93b0f6f6a462e99d54b33d= a6dc21b1e8435 100644 --- a/drivers/gpu/drm/msm/msm_kms.c +++ b/drivers/gpu/drm/msm/msm_kms.c @@ -201,8 +201,8 @@ struct drm_gpuvm *msm_kms_init_vm(struct drm_device *de= v) 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 configuration is no longer supported\n"); + return ERR_PTR(-ENODEV); } =20 vm =3D msm_gem_vm_create(dev, mmu, "mdp_kms", --=20 2.39.5