From patchwork Tue Dec 13 14:07:20 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sibi Sankar X-Patchwork-Id: 634612 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 15CC3C10F1D for ; Tue, 13 Dec 2022 14:08:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235311AbiLMOID (ORCPT ); Tue, 13 Dec 2022 09:08:03 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35962 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234899AbiLMOIB (ORCPT ); Tue, 13 Dec 2022 09:08:01 -0500 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AC58A64F2; Tue, 13 Dec 2022 06:08:00 -0800 (PST) Received: from pps.filterd (m0279871.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 2BDC88KY002290; Tue, 13 Dec 2022 14:07:49 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=qcppdkim1; bh=TXeBUCe1HPp5AFy0SHk2Z8LYe3WueSsP5aUxykmgGys=; b=M1mIggLGGs5ajdHY0YnTISt3w2uy5J78KW8Ba1gHRppFoldJnrLFFy6v0uWBBA5yB/4B XjGmQ55YZAolmViVDZUDgJDF4SNBj+5A5z35edrzYjiOLYK9415kZFFvIbEVheEAwu+j ZRIBeQvl7NDtitMUt9LMqhU/z1UyHPKMCcFq2vYIYnCNQeU47kktfr6DEbsJK9w9wR+/ SKl7irJEr2+qVh0l+IGSkHmNclepTDTY93Do+Dg7NYJeOaE9i+Mo2rRugRhW4iyNyfND gX8FC6L/VrzaHfBM9PpMyt5E8jykrbUlCvcW5+6E93a53SbDLIIdlRO5wY8pQA85OQcJ Ew== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3mes4a8ase-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 13 Dec 2022 14:07:48 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 2BDE7lJK019330 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 13 Dec 2022 14:07:47 GMT Received: from blr-ubuntu-87.ap.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.36; Tue, 13 Dec 2022 06:07:42 -0800 From: Sibi Sankar To: , , , CC: , , , , , , , , , , , Sibi Sankar Subject: [PATCH 0/4] Fix XPU violation during modem metadata authentication Date: Tue, 13 Dec 2022 19:37:20 +0530 Message-ID: <20221213140724.8612-1-quic_sibis@quicinc.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 7ZhKLx68d2VmJOkH8wyqo3hRnDOh2C00 X-Proofpoint-ORIG-GUID: 7ZhKLx68d2VmJOkH8wyqo3hRnDOh2C00 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-12-13_03,2022-12-13_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 bulkscore=0 priorityscore=1501 spamscore=0 malwarescore=0 impostorscore=0 mlxscore=0 suspectscore=0 mlxlogscore=999 adultscore=0 clxscore=1015 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2210170000 definitions=main-2212130126 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The memory region allocated using dma_alloc_attr with no kernel mapping attribute set would still be a part of the linear kernel map. Any access to this region by the application processor after assigning it to the remote Q6 will result in a XPU violation. Fix this by replacing the dynamically allocated memory region with a no-map carveout and unmap the modem metadata memory region before passing control to the remote Q6. The addition of the carveout and memunmap is required only on SoCs that mandate memory protection before transferring control to Q6, hence the driver falls back to dynamic memory allocation in the absence of the modem metadata carveout. Relevant discussions on the mailing list: https://lore.kernel.org/lkml/20221114110329.68413-1-manivannan.sadhasivam@linaro.org/ Depends on: https://patchwork.kernel.org/project/linux-arm-msm/cover/20221124184333.133911-1-krzysztof.kozlowski@linaro.org/ Reported-by: Amit Pundir https://people.linaro.org/~amit.pundir/linaro-sid-developer-dragonboard-845c-569/6.1-rc4_defconfig Reproduced with ^^ defconfig SDM845 SoCs Sibi Sankar (4): arm64: dts: qcom: Introduce a carveout for modem metadata dt-bindings: remoteproc: qcom: sc7180: Update memory-region requirements dt-bindings: remoteproc: qcom: q6v5: Update memory region requirements remoteproc: qcom_q6v5_mss: Use a carveout to authenticate modem headers .../bindings/remoteproc/qcom,q6v5.txt | 29 ++++++- .../remoteproc/qcom,sc7180-mss-pil.yaml | 3 +- .../remoteproc/qcom,sc7280-mss-pil.yaml | 3 +- .../boot/dts/qcom/msm8996-xiaomi-common.dtsi | 6 ++ arch/arm64/boot/dts/qcom/msm8996.dtsi | 9 ++ arch/arm64/boot/dts/qcom/msm8998.dtsi | 9 ++ arch/arm64/boot/dts/qcom/sc7180-idp.dts | 7 +- arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi | 7 +- .../dts/qcom/sc7280-herobrine-lte-sku.dtsi | 7 +- arch/arm64/boot/dts/qcom/sdm845.dtsi | 9 ++ drivers/remoteproc/qcom_q6v5_mss.c | 85 +++++++++++++------ 11 files changed, 142 insertions(+), 32 deletions(-)