From patchwork Fri Jan 26 23:54:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oreoluwa Babatunde X-Patchwork-Id: 13533711 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 smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 199E1C47422 for ; Fri, 26 Jan 2024 23:55:42 +0000 (UTC) Received: by smtp.kernel.org (Postfix) id F30B6C43601; Fri, 26 Jan 2024 23:55:41 +0000 (UTC) Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.kernel.org (Postfix) with ESMTPS id E8F28C433F1; Fri, 26 Jan 2024 23:55:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.kernel.org E8F28C433F1 Authentication-Results: smtp.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.kernel.org; spf=pass smtp.mailfrom=quicinc.com Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 40QNtSgI004148; Fri, 26 Jan 2024 23:55:28 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-type; s=qcppdkim1; bh=eShHXpDCJ4BD5txejNCW e8HZLN5QHa+jpumCWHtQOjg=; b=dtx+kKzFFiOgXb9S5cPzxhv1vZWWC8GApfaa ErnXCETEtdz2dhS1u9bpUTudvYHLBsmfNno8Vl1SG+Y2JPb5p2iMw7030KliCRta ihTizeueyDnMINo+aM+5aVNSeP0GfbFfzSJcbGOcmp0wa1TICPRIwGGFZqrwyhHM X1TSHLvLB/lAVnjmJTExOKxfltiXIcUBNJDfnG5q5Wv2ZaPoZN/C1GcHU6Ty02kX iOapJ+uitg9LCJllXlP5iUX3VvOhd3xNX6+AEQ460yI/fHalFBiRv2nR9hfMqv9h 9VilgrtAcsd6EjdzvW24CMvxJGEc3IFqEVcjA+b7KfwnZkKNEw== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3vvjbg8g0p-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 26 Jan 2024 23:55:28 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 40QNtRAi009502 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 26 Jan 2024 23:55:27 GMT Received: from hu-obabatun-lv.qualcomm.com (10.49.16.6) by nalasex01b.na.qualcomm.com (10.47.209.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Fri, 26 Jan 2024 15:55:10 -0800 From: Oreoluwa Babatunde List-Id: To: , , , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , Oreoluwa Babatunde Subject: [PATCH 28/46] um: resrved_mem: Move fdt_init_reserved_mem() below unflatten_device_tree() Date: Fri, 26 Jan 2024 15:54:07 -0800 Message-ID: <20240126235425.12233-29-quic_obabatun@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240126235425.12233-1-quic_obabatun@quicinc.com> References: <20240126235425.12233-1-quic_obabatun@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01b.na.qualcomm.com (10.47.209.197) To nalasex01b.na.qualcomm.com (10.47.209.197) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: JdUDySUL0Sb0attbw7OLSmGrM1dNMKEH X-Proofpoint-ORIG-GUID: JdUDySUL0Sb0attbw7OLSmGrM1dNMKEH X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-25_14,2024-01-25_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 spamscore=0 priorityscore=1501 mlxlogscore=764 phishscore=0 impostorscore=0 malwarescore=0 bulkscore=0 lowpriorityscore=0 adultscore=0 mlxscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2401190000 definitions=main-2401260176 The unflattened devicetree structure is available to be used not long after the page tables have been set up on most architectures, and is available even before that on other architectures. Hence, move the call to fdt_init_reserved_mem() to after unflatten_device_tree() is called so that the reserved memory nodes can be accessed using the unflattened device tree APIs. Using the unflattened devicetree APIs is more efficient than using the flattened devicetree APIs. Signed-off-by: Oreoluwa Babatunde --- arch/um/kernel/dtb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/um/kernel/dtb.c b/arch/um/kernel/dtb.c index 3ecee151a083..ad6003412319 100644 --- a/arch/um/kernel/dtb.c +++ b/arch/um/kernel/dtb.c @@ -27,8 +27,8 @@ void uml_dtb_init(void) } early_fdt_scan_reserved_mem(); - fdt_init_reserved_mem(); unflatten_device_tree(); + fdt_init_reserved_mem(); } static int __init uml_dtb_setup(char *line, int *add)