From nobody Mon Feb 9 09:21:47 2026 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id EA38A26CE3B for ; Thu, 15 Jan 2026 06:36:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768459013; cv=none; b=AF3JLED+T+05a3aEbsj+ml+MR3Ufin2nXK8B6Jxg9ngZKRwzU8ZQ0Y1hOMmKF5r2SxwBbeqG+/7G5u5/T79Ozu/EaTVpedmDHvua2y/bA08b4HAkxdW6uUm1PP7UcExmQ894wQdiWlrhM8ftOi9l90ro+6ZbfoqsTNEyCf4QHV4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768459013; c=relaxed/simple; bh=w2ye8ewOpcP/PecDlQ5rGJOlR1v3Ejj5LFgqwLaGt4A=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=q+4RSnthXdDuCpk9Z2r3t2lM3xkeUvaWXeXctNwNWfsRd3wu1exnQyF2/n4TwPg5vhy5OchdA3DomrgerV8sULgy3gYmSRFNa+ToTs73pq8WAGEyGnsqUAO66QD7vIpODrrBNQJ6zgyDZMuQS8LkTnpEWpaAPW0Uh2+aT2fFFfY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [223.64.69.1]) by gateway (Coremail) with SMTP id _____8Cx58EAi2hpUBMJAA--.17111S3; Thu, 15 Jan 2026 14:36:48 +0800 (CST) Received: from localhost.localdomain (unknown [223.64.69.1]) by front1 (Coremail) with SMTP id qMiowJDxxsD5imhp7+YeAA--.3541S2; Thu, 15 Jan 2026 14:36:47 +0800 (CST) From: Huacai Chen To: Huacai Chen Cc: loongarch@lists.linux.dev, Xuefeng Li , Guo Ren , Xuerui Wang , Jiaxun Yang , linux-kernel@vger.kernel.org, Huacai Chen Subject: [PATCH] LoongArch: Remove redundant code in head.S Date: Thu, 15 Jan 2026 14:36:33 +0800 Message-ID: <20260115063633.1388470-1-chenhuacai@loongson.cn> X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowJDxxsD5imhp7+YeAA--.3541S2 X-CM-SenderInfo: hfkh0x5xdftxo6or00hjvr0hdfq/ X-Coremail-Antispam: 1Uk129KBj9xXoW7XFW3GFy8Kw43Ar4kJr43urX_yoWDArc_JF W7Kw48Ww4kAanrCrZ0qr93Gr1UZw409F90y3W0qFWDt3sxZF4Yqr4Iyw1rZF90gFWDGrsx ArW3KFZxCr1jyosvyTuYvTs0mTUanT9S1TB71UUUUUDqnTZGkaVYY2UrUUUUj1kv1TuYvT s0mT0YCTnIWjqI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUI cSsGvfJTRUUUb7kYFVCjjxCrM7AC8VAFwI0_Jr0_Gr1l1xkIjI8I6I8E6xAIw20EY4v20x vaj40_Wr0E3s1l1IIY67AEw4v_Jrv_JF1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxS w2x7M28EF7xvwVC0I7IYx2IY67AKxVWUCVW8JwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxV WUJVW8JwA2z4x0Y4vEx4A2jsIE14v26F4j6r4UJwA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_ Gr1j6F4UJwAS0I0E0xvYzxvE52x082IY62kv0487Mc804VCY07AIYIkI8VC2zVCFFI0UMc 02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUXVWUAwAv7VC2z280aVAF wI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI48JMxAIw28IcxkI7V AKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCj r7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUtVW8ZwCIc40Y0x0EwIxGrwCI42IY6x IIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxVWUJVW8JwCI42IY6xAI w20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x 0267AKxVWUJVW8JbIYCTnIWIevJa73UjIFyTuYvjxU7_MaUUUUU Content-Type: text/plain; charset="utf-8" SETUP_MODES already setup the initial values of CSR.CRMD, CSR.PRMD and CSR.EUEN, so the redundant open code can be removed. Fixes: 7b2afeafaf9c2d5 ("LoongArch: Adjust boot & setup for 32BIT/64BIT") Signed-off-by: Huacai Chen --- arch/loongarch/kernel/head.S | 8 -------- 1 file changed, 8 deletions(-) diff --git a/arch/loongarch/kernel/head.S b/arch/loongarch/kernel/head.S index 7f288e89573b..4eed7bc312a8 100644 --- a/arch/loongarch/kernel/head.S +++ b/arch/loongarch/kernel/head.S @@ -126,14 +126,6 @@ SYM_CODE_START(smpboot_entry) LONG_LI t1, CSR_STFILL csrxchg t0, t1, LOONGARCH_CSR_IMPCTL1 #endif - /* Enable PG */ - li.w t0, 0xb0 # PLV=3D0, IE=3D0, PG=3D1 - csrwr t0, LOONGARCH_CSR_CRMD - li.w t0, 0x04 # PLV=3D0, PIE=3D1, PWE=3D0 - csrwr t0, LOONGARCH_CSR_PRMD - li.w t0, 0x00 # FPE=3D0, SXE=3D0, ASXE=3D0, BTE=3D0 - csrwr t0, LOONGARCH_CSR_EUEN - la.pcrel t0, cpuboot_data ld.d sp, t0, CPU_BOOT_STACK ld.d tp, t0, CPU_BOOT_TINFO --=20 2.47.3