From patchwork Wed Jun 21 10:05:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huacai Chen X-Patchwork-Id: 110970 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:994d:0:b0:3d9:f83d:47d9 with SMTP id k13csp4258471vqr; Wed, 21 Jun 2023 03:27:30 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ7A4lQ+HvP3ZWIynNVMzjEQIZOCMd5Ym3N8StHYjWBxvoDzC5FwkEqsrgsksmghSacC4Z4V X-Received: by 2002:a17:90b:4a05:b0:256:35f0:a2b0 with SMTP id kk5-20020a17090b4a0500b0025635f0a2b0mr14323673pjb.0.1687343249961; Wed, 21 Jun 2023 03:27:29 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1687343249; cv=none; d=google.com; s=arc-20160816; b=pyVS7VNDLYwIatBJOEEET205iopvMP5c5UK3Mj8XwOq+507kwJ9MuuhgaJ8H8X4oW0 bk7xzwTPlO2QBJlpzQVtaAmIghDxUr9sGZsZSTvYeUVWbrnQ18r/uUobuWeq4V0VFZ/B Vsl5eQug/+g8ni6MqW5hLsPsIUklV3ivyNfRUK0nk/QuAjPGVVoSLD5pM8JBldH8BPL+ tSajvCzOoJ1vbuJ7it4opzt0KWT3oiePLdicA/CyG3c3REaelHPAhhGR+vkW7CN4IN8S NvIXdnE86i3p3MsRN3ixCubq6ilfcacuKbuxprVKD7pdZ1h6u5fHEk1cpx0Eqg8dS1su JX7w== 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 :message-id:date:subject:cc:to:from; bh=LNT4Qida7/FE/1vA2BIibhcA9ovnlg0zm6plXtk1kVc=; b=kZOouPM71LcdXjQ8iAv4etpgj8nbbRYgqJq9enU66EwdspMhPtZXUplPyUtkRZ3RPj Kxi38z9iMyTPvDQifvvMDSij1NrcWDNftX3iGUKJvGZrEzTBlFjadFz/l4qJjrpfCdmu MDIn8VPXLVhHP2f0PvEPC8yh1i/c74z1FGJJ2iYcFSRsnJEPdM2h9mlugVkE6MO9/jNJ 8YnAougHaD2Or2MARm5NF89W96ji9mGpt1B97sihA2ho9PW2eh6p888UEqrx/NBbfZiG kC4706WYvPPwmd1kCM4Ewd2ygdX0RSB4/6BHBDpNwRBr2wBZ4fqYNyzZDDEcD54zBc+1 S4cQ== ARC-Authentication-Results: i=1; mx.google.com; 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 Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id f1-20020a17090a654100b00256c6c76723si3764158pjs.69.2023.06.21.03.27.13; Wed, 21 Jun 2023 03:27:29 -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; 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 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230235AbjFUKPF (ORCPT + 99 others); Wed, 21 Jun 2023 06:15:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35720 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232223AbjFUKPA (ORCPT ); Wed, 21 Jun 2023 06:15:00 -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 6DD01170C; Wed, 21 Jun 2023 03:14:42 -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 37CDA61509; Wed, 21 Jun 2023 10:06:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 01570C433B9; Wed, 21 Jun 2023 10:05:57 +0000 (UTC) From: Huacai Chen To: Arnd Bergmann , Huacai Chen Cc: loongarch@lists.linux.dev, linux-arch@vger.kernel.org, Xuefeng Li , Guo Ren , Xuerui Wang , Jiaxun Yang , linux-kernel@vger.kernel.org, loongson-kernel@lists.loongnix.cn, Huacai Chen Subject: [PATCH] LoongArch: Set CPU#0 as the io master for FDT Date: Wed, 21 Jun 2023 18:05:44 +0800 Message-Id: <20230621100544.109804-1-chenhuacai@loongson.cn> X-Mailer: git-send-email 2.39.3 MIME-Version: 1.0 X-Spam-Status: No, score=-4.0 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,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?1769307635972533806?= X-GMAIL-MSGID: =?utf-8?q?1769307635972533806?= ACPI systems set io masters by parsing ACPI MADT, FDT systems have no MADT so we explicitly set CPU#0 as the io master. Otherwise CPU#0 will be considered as hotpluggable. Signed-off-by: Huacai Chen --- arch/loongarch/kernel/smp.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/loongarch/kernel/smp.c b/arch/loongarch/kernel/smp.c index d6dfb4c7ec75..46e611882136 100644 --- a/arch/loongarch/kernel/smp.c +++ b/arch/loongarch/kernel/smp.c @@ -207,6 +207,7 @@ static void __init fdt_smp_setup(void) } loongson_sysconf.nr_cpus = num_processors; + set_bit(0, &(loongson_sysconf.cores_io_master)); #endif }