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[73.37.105.206]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2cf346db036sm17221035ad.46.2026.07.17.13.49.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Jul 2026 13:49:01 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org Cc: linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, Rob Clark , Sean Paul , Konrad Dybcio , Akhil P Oommen , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Marijn Suijten , David Airlie , Simona Vetter , linux-kernel@vger.kernel.org (open list) Subject: [PATCH v6 08/16] drm/msm: Add helper to check for per-process pgtables VM Date: Fri, 17 Jul 2026 13:48:24 -0700 Message-ID: <20260717204841.26120-9-robin.clark@oss.qualcomm.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260717204841.26120-1-robin.clark@oss.qualcomm.com> References: <20260717204841.26120-1-robin.clark@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=RbqgzVtv c=1 sm=1 tr=0 ts=6a5a953f cx=c_pps a=MTSHoo12Qbhz2p7MsH1ifg==:117 a=19Wyn7e3V/0aNffMjNCMQw==:17 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=EUspDBNiAAAA:8 a=4aDCzPfTH0uMOhJcsooA:9 a=GvdueXVYPmCkWapjIL-Q:22 X-Proofpoint-GUID: w7Bu_dVPFOshqM2tOYuytymXixsm1g4D X-Proofpoint-ORIG-GUID: w7Bu_dVPFOshqM2tOYuytymXixsm1g4D X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzE3MDIxNCBTYWx0ZWRfX0FFL+NPhxZpY Vf53VrBeNN48p37dPtr/A1IVTHDUm+gRlyjuhR9vZd6PALnGKXcXzo+8GGyO1FdDxeqE7akdC4i h1RBFDYQ0k3ydOC8Tb7C4wjyIa08BBBfp4Bjno6P29G2h8mp1VUjzO/538VirarC6wiBVjT1V6D pUIbI3OoYKkNz6BSjrVzNdDxJCrvIHAZqWeK7W6ISgu7jTL2YTjI5EP7gODuYRNLciJEKfY9mtO egTJ6kUS26FjI1vyIcvIZkWimSjIb67155ELyTc9xovsNdSwESc2X68yPRJZY8PIsv9NHYH/2ON aViFVqQiMUIpeRynXSyXrcqNugahm/+HBl0cwn+KPUhJ9bGSZmq02ox+gPRde/NSd8zQRJmjjJw rydc+49/KQcqEe4LmoGhtA+XIhxTIInzdoC6djmtdgpDWxsRfb63zgzO3oDYaw8BqqhBtPAFjnj Mmdcmca2w3elF/X8NCg== X-Proofpoint-Spam-Info: AW1haW4tMjYwNzE3MDIxNCBTYWx0ZWRfX6oSGyF0Yz6FR MmTkaJpPVkbi6RcsYkFKCC5199TC3TruwMKxwu33uHMDM1j9qoRhk+FWBSQMc5Xvn5IMfi452Mv +ilDCBQYVNb4rMKYmFxlFGcricvqVa4= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-17_06,2026-07-17_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 clxscore=1015 suspectscore=0 priorityscore=1501 lowpriorityscore=0 impostorscore=0 bulkscore=0 phishscore=0 adultscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607170214 This will simplify a following commit to allow lazy VM creation to fail. Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/adreno/adreno_gpu.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c index 0d54141ff089..5738eac9aebd 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -356,6 +356,12 @@ int adreno_fault_handler(struct msm_gpu *gpu, unsigned long iova, int flags, return 0; } +static bool +valid_per_process_vm(struct msm_gpu *gpu, struct drm_gpuvm *vm) +{ + return (vm != gpu->vm); +} + int adreno_get_param(struct msm_gpu *gpu, struct msm_context *ctx, uint32_t param, uint64_t *value, uint32_t *len) { @@ -414,12 +420,12 @@ int adreno_get_param(struct msm_gpu *gpu, struct msm_context *ctx, *value = gpu->suspend_count; return 0; case MSM_PARAM_VA_START: - if (vm == gpu->vm) + if (!valid_per_process_vm(gpu, vm)) return UERR(EINVAL, drm, "requires per-process pgtables"); *value = vm->mm_start; return 0; case MSM_PARAM_VA_SIZE: - if (vm == gpu->vm) + if (!valid_per_process_vm(gpu, vm)) return UERR(EINVAL, drm, "requires per-process pgtables"); *value = vm->mm_range; return 0; -- 2.55.0