From patchwork Wed Jun 14 16:55:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 108066 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:994d:0:b0:3d9:f83d:47d9 with SMTP id k13csp108747vqr; Wed, 14 Jun 2023 10:20:04 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ660SNCgfVde8PDOh9nQwzKHM/1UKp1E7uOu5ypoIO99gLUW+BqHHFkT5b5imsEeubOgXeb X-Received: by 2002:aa7:d058:0:b0:514:a419:181e with SMTP id n24-20020aa7d058000000b00514a419181emr10991467edo.20.1686763203903; Wed, 14 Jun 2023 10:20:03 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1686763203; cv=none; d=google.com; s=arc-20160816; b=KvdC8IU0JYs4qlMOuYlefMQpEKK8T6khjgNsBqe74OpkjA02cpmOSfEfzwTuU1jIXE G3KGgaMxUcq8pGeMdLy5Z6qGjRA4auPeVSPy/5hspwMACzYV7WrnO5eGhj8zJfxNRf59 sfGBoa3nJT26Mq5NhrBQpYqXPP6J4A9vLoyh83cIgs8OcdIHQ7N1uel8L2WKSWjUjBNF NgOsUVcf79clcO33Jr1t9pepbV/bz6P6ZpnackcXftkR+i8EWNtlR/m67oJiU7pzrRfR u3OdYbqQ0/++Rg1eSEc6+jERy/sZUwJkmO/SHYb4Ig0L15KTL3IWafku8Pl8oYhq7jMd RmfQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=173dqcQzBqjrNQ7+zfHjjj1MRojRr5GjOF0RWF1oyho=; b=itxyiJaFDiYStE76uKzzBlNKgNzY689srgRMg1OG6seS1RursfSm6L02p/sKGDKxqh msTUbu/5Ape+73D912NKSWww8sZ/F7InBv3aJt3zNhi7fwI3BT7a8c6ChA7uRqIl7Zaf qBhdVIpAkHb/LB60pBmWxHwTEeZzm0h1sw/eLMM+4mTTdc8obd745XxFt1quGrVU9i+a slUF5BkVyAfEF6vxSNjudBzZpfbEPPTA5h7hOb17hRFrVLbwlBM+ksDGkIC/fNcyplpO w6P/ZWnVb39W2i/0uwojP1eSO7gjgjis2nLueA2a/Tire4ssSsjbQcb2ghHyY7rQyiN9 Jo7w== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=C2rZISm1; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id f3-20020a056402160300b0050bf72fadebsi5308499edv.280.2023.06.14.10.19.37; Wed, 14 Jun 2023 10:20:03 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=C2rZISm1; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236571AbjFNRG3 (ORCPT + 99 others); Wed, 14 Jun 2023 13:06:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37678 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236505AbjFNRG1 (ORCPT ); Wed, 14 Jun 2023 13:06:27 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 53CF8E41 for ; Wed, 14 Jun 2023 10:06:27 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E0282638A3 for ; Wed, 14 Jun 2023 17:06:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C92BAC433C9; Wed, 14 Jun 2023 17:06:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1686762386; bh=QeH29Idc/6qrLsvNLxNicZ5LF/IoEKjciGzozuHn9t0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=C2rZISm1K8SkX1xOX2TLo7PW3cS1O2+YAR3k8M/A7VHYIwyHqnIYBfZHgFZjoHAcU D6TI6td2vGW0/E3u69+d2Zu7PFJ2td8w0NweV8byRIQnpl3T+xRcHQDXzF+Eg/24Kl siFAuXe4IaioC/8Z1rh4+OBr2Q9k+zPGamRaR8KE5Q+3kXXjDS44jOvQ+tiTZhqZWo YGCtd0MSzQSzdydgVrdgOXvuAO+tZb1xla2qNqdK9DMFnKtUXfHygowqSgjC1PS/4z aq3kHPtbo8dEMetGxnDv5izg4t5+r2BOJCxxMQKppXEb7mN2OIBSCx71X/3FFRVeOi wbMRbsRj8hzTA== From: Jisheng Zhang To: Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Conor Dooley Subject: [PATCH 1/3] riscv: errata: thead: only set cbom size & noncoherent during boot Date: Thu, 15 Jun 2023 00:55:02 +0800 Message-Id: <20230614165504.532-2-jszhang@kernel.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230614165504.532-1-jszhang@kernel.org> References: <20230614165504.532-1-jszhang@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1768699413202075122?= X-GMAIL-MSGID: =?utf-8?q?1768699413202075122?= The CBOM size and whether the HW is noncoherent is known and determined during booting and won't change after that. Signed-off-by: Jisheng Zhang Reviewed-by: Conor Dooley --- arch/riscv/errata/thead/errata.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/riscv/errata/thead/errata.c b/arch/riscv/errata/thead/errata.c index c259dc925ec1..be84b14f0118 100644 --- a/arch/riscv/errata/thead/errata.c +++ b/arch/riscv/errata/thead/errata.c @@ -45,8 +45,11 @@ static bool errata_probe_cmo(unsigned int stage, if (stage == RISCV_ALTERNATIVES_EARLY_BOOT) return false; - riscv_cbom_block_size = L1_CACHE_BYTES; - riscv_noncoherent_supported(); + if (stage == RISCV_ALTERNATIVES_BOOT) { + riscv_cbom_block_size = L1_CACHE_BYTES; + riscv_noncoherent_supported(); + } + return true; } From patchwork Wed Jun 14 16:55:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 108065 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:994d:0:b0:3d9:f83d:47d9 with SMTP id k13csp108509vqr; Wed, 14 Jun 2023 10:19:40 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ5H9prSy40XUUDAh5560omd0Lv1Jpang/yZ7WmG/v2q50zC93XNCuRpCsecCrJ5HUexyyG/ X-Received: by 2002:a05:6a21:9991:b0:114:6f3c:4332 with SMTP id ve17-20020a056a21999100b001146f3c4332mr2288319pzb.24.1686763180097; Wed, 14 Jun 2023 10:19:40 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1686763180; cv=none; d=google.com; s=arc-20160816; b=gV70iFTwO+fWuZC9KZLB+8+vaaaLbupQ9azmRTsKSdq/A4KA+cksIXpI1ye8MWA/on 6Z+IJj1wFdmCPPSZeNFYfstQj/niFxnOkhiAfsa29BAcd7FASJXsJKum26aGTnljKff+ HqMt8sJh7io11O9rq8WCR0BrDHLH5Hj3RDIRDDWgzGXbCUqgzsOcls7VNbqm1kHKpcru 6KXBydZO/AlT608/WVAF5nW+koluTkGbI2BGlwN+QpKXhN3EGnyK6yWACb6J1PQkeFa6 jO0M599kMWk4FMOYSGGzl6p26AvIynfqNMWDVS7YkrhXNvbU6qZBzvK5rvEoEmTB2ldz fQuw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=4WkKtVJCT17LRO6q4yZ5N5m3IDX7cLB6FaNrmEqxakU=; b=t3W6rS6S8J0GEqBRyw5TXMAwKLo9bMoYNNTMqGgTlthNzsy9tjZ7EswVjtQ1OhhvOW Lww9UHoCGGh1LO29cmqCOJe+5ymLZb9Nz3vs2FAtW3MNlr/5feF83P85deJvHdne6Q54 JDcVqXlF8PQ64xTZrDc2AsusnvY4yxZS+578T0KmAa0//f4XlcNjgKi3U8S2BYiieHvT 2mmHsfI2msxBwziP9qgCMAbiPD3aX98OkNBpHqIMxrgzPC7jAb2gcW9Vz/1FZXpoq1BZ xnZB+RoYzl2hsjRB6Qkl9EDoXEaLuDFHUGBz1stFGvxuiJYk6EaASXDQQrHtWPLQdybF KFLw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=smQcIBxn; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id e16-20020a17090301d000b001b3b5851f0dsi7484905plh.466.2023.06.14.10.19.27; Wed, 14 Jun 2023 10:19:40 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=smQcIBxn; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236611AbjFNRGc (ORCPT + 99 others); Wed, 14 Jun 2023 13:06:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37684 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236578AbjFNRG3 (ORCPT ); Wed, 14 Jun 2023 13:06:29 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3E8C313E for ; Wed, 14 Jun 2023 10:06:29 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D00CA61542 for ; Wed, 14 Jun 2023 17:06:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C1B11C433C8; Wed, 14 Jun 2023 17:06:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1686762388; bh=IzRWhdBJbcEgHie+AfmJ1TfzRd1tYjsi5h/A0SNdze8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=smQcIBxnp+uHpcp3B4gZHVTHtsLsPvk7LzPNCHaPHXDdgWQfppJOBbHWv9OiMYr66 u0o41zBEh60PJysSMHJ86S6d/EkB7rB/QOMOe5h7x1qHDgNUqsdaorrRnRbtDtRFJJ QKNUMDnIr91hos/JiBNnRg7o0RdVxQTX4xlOv3q3rj//YrQma9pOrbeW+TBcPLrr0N 7T1CvpFyG+ALpuyiSQGY+zhrEs5ddA/s9K6n6ltPGbEAMaBT3JueCPQBFSVE6FuTDp zFAzI6bjX09kP3Hm1px4uVEvnPaVaOxWIOyzEhUcNPV64MZqSnHYQGeT/WDIq0Lw5m kokFqBXz8U+kA== From: Jisheng Zhang To: Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Conor Dooley Subject: [PATCH 2/3] riscv: mm: mark CBO relate initialization funcs as __init Date: Thu, 15 Jun 2023 00:55:03 +0800 Message-Id: <20230614165504.532-3-jszhang@kernel.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230614165504.532-1-jszhang@kernel.org> References: <20230614165504.532-1-jszhang@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1768699388763763894?= X-GMAIL-MSGID: =?utf-8?q?1768699388763763894?= The two functions cbo_get_block_size() and riscv_init_cbo_blocksizes() are only called during booting, mark them as __init. Signed-off-by: Jisheng Zhang Reviewed-by: Conor Dooley --- arch/riscv/mm/cacheflush.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/riscv/mm/cacheflush.c b/arch/riscv/mm/cacheflush.c index fca532ddf3ec..fbc59b3f69f2 100644 --- a/arch/riscv/mm/cacheflush.c +++ b/arch/riscv/mm/cacheflush.c @@ -104,9 +104,9 @@ EXPORT_SYMBOL_GPL(riscv_cbom_block_size); unsigned int riscv_cboz_block_size; EXPORT_SYMBOL_GPL(riscv_cboz_block_size); -static void cbo_get_block_size(struct device_node *node, - const char *name, u32 *block_size, - unsigned long *first_hartid) +static void __init cbo_get_block_size(struct device_node *node, + const char *name, u32 *block_size, + unsigned long *first_hartid) { unsigned long hartid; u32 val; @@ -126,7 +126,7 @@ static void cbo_get_block_size(struct device_node *node, } } -void riscv_init_cbo_blocksizes(void) +void __init riscv_init_cbo_blocksizes(void) { unsigned long cbom_hartid, cboz_hartid; u32 cbom_block_size = 0, cboz_block_size = 0; From patchwork Wed Jun 14 16:55:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 108079 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:994d:0:b0:3d9:f83d:47d9 with SMTP id k13csp135373vqr; Wed, 14 Jun 2023 11:06:14 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ7Cv66L4I4lZ0liS5qhHHTIxvrkJrkpAxr5L8IizCPG0yX8lfouUUcS5RpQDKmo/GXG8tm1 X-Received: by 2002:a17:907:6e12:b0:977:ab43:731f with SMTP id sd18-20020a1709076e1200b00977ab43731fmr20604427ejc.66.1686765974168; Wed, 14 Jun 2023 11:06:14 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1686765974; cv=none; d=google.com; s=arc-20160816; b=nZEE8oVSAybt5I5F8rHEX2MUE9jGo32949Ba0ND3n9amo9ElJl9oNehGo10rJEbJoK R6Gn7VrDcDfN9axjOdFv66oluS7nqHwJdYwMewjZV4sXTUrBBASkHGh1nkxz97Gapx6N c8VkjdmamzKy+GhRvP6DOpNNw+osVCILeESBBRAR1j1b9LR8AKS6D+e2qZK4+8BsjuKv qRsDxiiXXIu2K75+cRo16E/3kFaLCsrczSe8itXSnAx75bUFlQaJg46Vb8FPJGAO73Kl BDbIUiHist7m2dyXVXD50HvvcB84EAAqpF9h5HcD7hJ7kHm0R01Bw5I2OLekQ1NhcX+Z osXQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=1c912ga+/eiXxdsYcONklV1EIJeRz6yMZku1xYhjdHA=; b=HlattATmC0AcDnJmBI1lp/De8/2RT6CUTY/+YNHzUInY12yrfadpoK19npiZZLPKEJ SCPHeQVRlrhNW7Qyrs7eImUFT2ymQvZUU20JA2JEFkmjL1EdHM+KFB0yp1czovQrSwVE ORk0mFBLcycF8G+57meMc/+VREeN78pIxyF2Qm1c3G9kmuRYk8Yv4UM4EChTkMyJjwUo KY52n+svcA0mZpMYfK1jh7sAGQ37eZW5wkyRqRntHrpaiJTLD+p7Cl315b1vmukywct6 rP7FjOTmPg+cgSk0FzB96RiVo8RrB0zWzhSqbpLAUvFC0KIF/YhfWCTlEq4aOMT4K2IV JTOw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b="nZaXe/Fq"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id y13-20020a1709064b0d00b009788a112566si8106772eju.116.2023.06.14.11.05.45; Wed, 14 Jun 2023 11:06:14 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b="nZaXe/Fq"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236578AbjFNRGf (ORCPT + 99 others); Wed, 14 Jun 2023 13:06:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37696 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236598AbjFNRGc (ORCPT ); Wed, 14 Jun 2023 13:06:32 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 47068E41 for ; Wed, 14 Jun 2023 10:06:31 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D120563995 for ; Wed, 14 Jun 2023 17:06:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B95D1C433C0; Wed, 14 Jun 2023 17:06:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1686762390; bh=r6WmK6pN8JZLuhkdUWl3EWEdgWXW6Xnybl6dJtROQn4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nZaXe/FqPg/6fky/CfXosBUmIW2Noo0nes4r5ymfjKVsNeqFuSRyQAxyHOhicbU4t xguaueQOiZ7lg7LuC9SFyUrh2P0DrP3BRZFk6aEj9nORUFle74Q5tC3e4MSpJGVIf6 iAj3cXwcdUq7gEUrskoIk0W5QGsDA6llLPqkweStT0KmYkBlSmlFQOTLsM/fQ1O0Qk 56pLS9sQSNLyZrPYWsipzdZWhQ0Mv8kFIuGEJ5pgp+58IqvqMeiX8ZtjYPh+F2mr5c RBtDCpKC/7v0rAvStUEsSXbFRMkDH0hhOUcuriJEokWCAD6jTa0Zy7HMREtmJj/CK4 vBbwyiuiVZz3Q== From: Jisheng Zhang To: Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Conor Dooley Subject: [PATCH 3/3] riscv: mm: mark noncoherent_supported as __ro_after_init Date: Thu, 15 Jun 2023 00:55:04 +0800 Message-Id: <20230614165504.532-4-jszhang@kernel.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230614165504.532-1-jszhang@kernel.org> References: <20230614165504.532-1-jszhang@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1768702318338086986?= X-GMAIL-MSGID: =?utf-8?q?1768702318338086986?= The noncoherent_supported indicates whether the HW is coherent or not, it won't change after booting, mark it as __ro_after_init. Signed-off-by: Jisheng Zhang Reviewed-by: Conor Dooley --- arch/riscv/mm/dma-noncoherent.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/mm/dma-noncoherent.c b/arch/riscv/mm/dma-noncoherent.c index d919efab6eba..d51a75864e53 100644 --- a/arch/riscv/mm/dma-noncoherent.c +++ b/arch/riscv/mm/dma-noncoherent.c @@ -10,7 +10,7 @@ #include #include -static bool noncoherent_supported; +static bool noncoherent_supported __ro_after_init; void arch_sync_dma_for_device(phys_addr_t paddr, size_t size, enum dma_data_direction dir)