From nobody Tue Dec 23 12:28:04 2025 Received: from bg1.exmail.qq.com (bg1.exmail.qq.com [114.132.67.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 36062E541 for ; Fri, 2 Feb 2024 04:03:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.132.67.179 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706846620; cv=none; b=l2xz2iYFZ0DXxh1HPZhsFqW9lNZboyt1s0nrm+2sRcB2OjRbDGEscvRRKMPIc/Ftt1TfB5DIw/bD2cZyaaPTZUKwLn6PO6oNZPKxf4qfFw0VnEVazHMP9EfDhZtyGNTpT9Wykv+OJpL4t/EyjtMJrKEtAE3lBLHtU+hpSesr3PI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706846620; c=relaxed/simple; bh=+Eo2dwljZcW5uV4yjXoHiFKq3QU2j3mrhDikr579ado=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=bzLwBqmBONL90StqFjLc/dhbZNRwl4VXVwzHmn8yFMwHNRxeXNeG9osccmAO4lczoICfOc03jmv8yKFUguM8e7mng4E+KX28jnpzr7Fea96c1BeX0R76xwm+nr0RW+VDerXkGbuUt3mkiLPEjCtdMfADDqfcdvElpQZy3j+I5gg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=shingroup.cn; spf=pass smtp.mailfrom=shingroup.cn; arc=none smtp.client-ip=114.132.67.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=shingroup.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=shingroup.cn 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 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-QQ-SENDSIZE: 520 Feedback-ID: bizesmtp:shingroup.cn:qybglogicsvrgz:qybglogicsvrgz5a-1 Content-Type: text/plain; charset="utf-8" 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 Acked-by: Mark Rutland --- 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, struc= t task_struct *src) fpsimd_preserve_current_state(); *dst =3D *src; =20 - /* 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 --=20 2.27.0