From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 1F72FC47258 for ; Fri, 2 Feb 2024 04:03:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=bMJ3/bphvumY/mt5az8TqeP3Sy3LRtAA41iBQlbif2U=; b=k9AEJs45g4K5Ey c+55EjeMMqQ4pqJdxEISfJSve9XMeUQw256GvOtQDkip9lRvDS4HOBS89XEKuYl1KR9AH6HgafggN vgG7JcXCJNSLW0YwhXz7jLCHr3D50Ierft0OkabP37h871iZ5BRi0Eux/bfGsIJQzUYd/kb/UXlix aoSNHeeFJK32bhxv1scKrXD1hipI1oFO4WWR7XwkYQBPbFnpudhaFAVbxYcjK5rn5UTp8RLJlVkns Aocj2b4crDfO/tpVMW/TQUI14G5sGSqKxDSJQXIqQsIE6BqI1v2m5tvpJRMqcvMZfh2u6TqBP0x3D ufaVqrnqvgunw46Sx3pg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rVklq-0000000A4b5-0JK1; Fri, 02 Feb 2024 04:03:18 +0000 Received: from smtpbguseast3.qq.com ([54.243.244.52]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rVklm-0000000A4V4-2EBy for linux-arm-kernel@lists.infradead.org; Fri, 02 Feb 2024 04:03:16 +0000 X-QQ-mid: bizesmtp72t1706846544tpicfqcy X-QQ-Originating-IP: Aby11FTS8fbag06Qy9tbwzEEl2YdZgrNCtLGverTmj8= Received: from localhost ( [183.209.108.228]) by bizesmtp.qq.com (ESMTP) with id ; Fri, 02 Feb 2024 12:02:22 +0800 (CST) X-QQ-SSF: 01400000000000504000000A0000000 X-QQ-FEAT: W+onFc5Tw4OrFz6v/gvbEmaS1UMOWtNxM4tOzgs1lH0rkHYguDEySueuhAkfE mQFugpbemCJRHgjBaaVvk3Go474QHdo/bD5In6Cv03LAORRYTgtvxLAlygeNJ1A/bNTQhTJ oSQHA0+PMEEcNqJbCTq7njG7d4qU3oa3lIm21kj4t5T+f+5NtDb8Ix2E+LgRlzuvDjTEpTO 4YV3/paMc7I6CTdfznQePEwm0jo2GbWROPnTNLm/pGg2VXYOKMSFUp7mYiIVJlBT0Ttm51j /2xQOohz56PBwubBE+eoBa55SsfTO2q0IuC835IITfWrZKkTZh9olgM7kbkVEYx103xlT+w IhiZOpqlV90I/MHBp816VkZjJrssDvQfSgQq6b1m1wSwMTw3hbCoT0gcn6jPA== X-QQ-GoodBg: 2 X-BIZMAIL-ID: 5419536639946482779 From: Dawei Li To: catalin.marinas@arm.com, will@kernel.org Cc: mark.rutland@arm.com, mcgrof@kernel.org, jpoimboe@kernel.org, j.granados@samsung.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, set_pte_at@outlook.com, Dawei Li Subject: [PATCH] arm64: remove unneeded BUILD_BUG_ON assertion Date: Fri, 2 Feb 2024 12:02:11 +0800 Message-Id: <20240202040211.3118918-1-dawei.li@shingroup.cn> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 X-QQ-SENDSIZE: 520 Feedback-ID: bizesmtp:shingroup.cn:qybglogicsvrgz:qybglogicsvrgz5a-1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240201_200315_136166_3377ABB8 X-CRM114-Status: UNSURE ( 7.34 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Since commit c02433dd6de3 ("arm64: split thread_info from task stack"), CONFIG_THREAD_INFO_IN_TASK is enabled unconditionally for arm64. So remove this always-true assertion from arch_dup_task_struct. Signed-off-by: Dawei Li --- arch/arm64/kernel/process.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index 7387b68c745b..4ae31b7af6c3 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c @@ -290,9 +290,6 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src) fpsimd_preserve_current_state(); *dst = *src; - /* We rely on the above assignment to initialize dst's thread_flags: */ - BUILD_BUG_ON(!IS_ENABLED(CONFIG_THREAD_INFO_IN_TASK)); - /* * Detach src's sve_state (if any) from dst so that it does not * get erroneously used or freed prematurely. dst's copies -- 2.27.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel