From patchwork Thu Sep 21 02:37:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 13393600 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 64E3DCD4938 for ; Thu, 21 Sep 2023 02:37:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229473AbjIUCh4 (ORCPT ); Wed, 20 Sep 2023 22:37:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43132 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229445AbjIUChz (ORCPT ); Wed, 20 Sep 2023 22:37:55 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A3E98DD; Wed, 20 Sep 2023 19:37:49 -0700 (PDT) Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 38L22tG8006520; Thu, 21 Sep 2023 02:37:45 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : subject : date : message-id : mime-version : content-type : content-transfer-encoding : to : cc; s=qcppdkim1; bh=IfFz9BrB4bkgqUsTjtG5Gh1B+KFWE47RWaA23PuDYKM=; b=PjG+G+kH5DCJKcGOvaHRrKWxR8xigTkMhfmpTNzOPPWYvGkqJaatisGQshXBaUsHYZ8M ev4JYSjnEYQ0LXrShUv+TBus8vb1Vxsgvm17TCG+nc+iHftl7Pl5Wzva6NwuYBh4giEH bvkyNrVjxk92/TCrrGg3dhcrrhzYpYpSxpb3SdozF+o5LemwB7/ovK1xk2LkN2rzajQO 8/Zmjb/4shzwOxBCQ+qmqaM0pHRMva/MVHMNXJ0nHah4Z0KL4yd0pe3Y8FgOY3rfXc2Y Yypv4mCJDGOYndUnvzdhDt3n3Zr1zlktOKkhtLSTi4gXm0iboSX8z8TRO9ydhdIxVR8B 7Q== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3t7r8w2nbn-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 21 Sep 2023 02:37:45 +0000 Received: from nalasex01c.na.qualcomm.com (nalasex01c.na.qualcomm.com [10.47.97.35]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 38L2bihs009388 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 21 Sep 2023 02:37:44 GMT Received: from hu-bjorande-lv.qualcomm.com (10.49.16.6) by nalasex01c.na.qualcomm.com (10.47.97.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.30; Wed, 20 Sep 2023 19:37:43 -0700 From: Bjorn Andersson Subject: [PATCH v3 0/3] soc: qcom: rmtfs: Support dynamic allocation Date: Wed, 20 Sep 2023 19:37:29 -0700 Message-ID: <20230920-rmtfs-mem-guard-pages-v3-0-305b37219b78@quicinc.com> MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAGmsC2UC/0WNwQrCMBBEf6Xk7JaYjUU9+R8ikibbNtIkNWlFK P13Vy9eBt7Am1lFoeypiHO1ikwvX3yKDLirhB1M7Am8YxZKKpQnJSGHuSsQKEC/mOxgMj0VcOg kOWlbiY1gtzWFoM0m2oHtuIwjl1Omzr9/Z9cbc5dTgHnIZP4XB+TERmOtpdZHhbCH5+LtvX0kn nN0+ZKPtrYpiG37AL+sWUPBAAAA To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley CC: , , , Bjorn Andersson X-Mailer: b4 0.12.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1695263863; l=1445; i=quic_bjorande@quicinc.com; s=20230915; h=from:subject:message-id; bh=hVXyDKVlFdGuI9dLXSkJSn9oxA0b2xMTPu+VuroV7Yw=; b=pxG+lKUM41Ore1tkQRCk6f2SMLx6mXPzjWR6DvCQ761b97uOnYyzsS8J0fmsiqyY7ygvpO1dodF/ D8pJr/uyCmBoAC6hiiCpbjztql1vJ5SQV/CFK2HfOzVh+f/QWEat X-Developer-Key: i=quic_bjorande@quicinc.com; a=ed25519; pk=VkhObtljigy9k0ZUIE1Mvr0Y+E1dgBEH9WoLQnUtbIM= X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01c.na.qualcomm.com (10.47.97.35) To nalasex01c.na.qualcomm.com (10.47.97.35) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: VViAIUONxjDXdtmjCnA9hs18-39ejrB_ X-Proofpoint-ORIG-GUID: VViAIUONxjDXdtmjCnA9hs18-39ejrB_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.980,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-09-20_14,2023-09-20_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 spamscore=0 mlxscore=0 suspectscore=0 bulkscore=0 mlxlogscore=608 adultscore=0 clxscore=1015 impostorscore=0 lowpriorityscore=0 priorityscore=1501 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2309210021 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Some platforms have laxed requirements on the placement of the rmtfs memory region, introduce support for guard pages to allow the DeviceTree author to rely on the OS/Linux for placement of the region. Changes since v2: - Rewrote DeviceTree binding description, to avoid dictating the OS behavior. - Adjusted addr and size before memremap(), to avoid mapping the guard pages, and unnecessarily have to adjust the base pointer. Changes since v1: - Drop qcom,alloc-size in favour of using reserved-memory/size - Introduce explicit property to signal that guard pages should be carved out from this region (rather than always do it in the dynamic case). - Drop the dma_alloc_coherent() based approach and just add support for the guard pages. - Added handling of failed reserved-memory allocation (patch 3) --- Bjorn Andersson (3): dt-bindings: reserved-memory: rmtfs: Allow guard pages soc: qcom: rmtfs: Support discarding guard pages soc: qcom: rtmfs: Handle reserved-memory allocation issues .../devicetree/bindings/reserved-memory/qcom,rmtfs-mem.yaml | 11 +++++++++++ drivers/soc/qcom/rmtfs_mem.c | 11 ++++++++++- 2 files changed, 21 insertions(+), 1 deletion(-) --- base-commit: 926f75c8a5ab70567eb4c2d82fbc96963313e564 change-id: 20230920-rmtfs-mem-guard-pages-d3d0ed0cb036 Best regards,