From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-180.mta1.migadu.com (out-180.mta1.migadu.com [95.215.58.180]) (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 3D7BA2C0281 for ; Mon, 15 Dec 2025 08:22:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.180 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765786969; cv=none; b=ZwIF3/gFHcfSTX5wZfHiBW6R+Iu/rhuQFd/A5lxF1qruUWeMIbBaWt8kJ1OiBE9/bBPBscVrdG71NN8gIJsS8XCx/52N7kPWYtCamAB6e9ZsS/SDbJVZWU89/gAeI8NSkrGKdU3JpnVbcRnvY3jc2Nv3XYktAUpeeXWEZMuVk+k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765786969; c=relaxed/simple; bh=jBTSf1NBjHQ0A85ubxl+1PskFCEAy3vCJ4zJY+SfPYU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=a5qhBvJB9QJGpm9Ta2iEryg4q7Hp/sXEICeg9R6rrAw2j8I+etHp1a+eHWObseRylSLnE5mcLHqfZMl4bW7nn/rczHPdi0mcrt3rWmrmyEx921vTNpIgSvIOjE+cNA5YXOfdp/FozYG+mss3Qsf0kIS6ExHq+H1vO6dWzY5FgGE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=tSafFRUj; arc=none smtp.client-ip=95.215.58.180 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="tSafFRUj" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1765786965; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=XnHdPbNZY+icNHDhsU00WTTGxUuRI5fAPK2EbH7Tj7Q=; b=tSafFRUjcri0kk/LKeDUWGBY16ZYmLR1FCdTK/b1GxPfQUw60oG41n8Doo1khp6SRKSWVA HIFgk+4lH3TcVlZbfKeYvJmYr9XMVYAguxeY7O9GJq7OOKEPgt7NssDpAxblxXj3NClpU7 DVUqPt8UI/wxDpiEuNEQcnerhHjs2PY= From: George Guo Date: Mon, 15 Dec 2025 16:22:04 +0800 Subject: [PATCH v6 4/4] LoongArch: Enable 128-bit atomics cmpxchg support Precedence: bulk X-Mailing-List: loongarch@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251215-2-v6-4-09a486e8df99@linux.dev> References: <20251215-2-v6-0-09a486e8df99@linux.dev> In-Reply-To: <20251215-2-v6-0-09a486e8df99@linux.dev> To: Huacai Chen , WANG Xuerui , hengqi.chen@gmail.com Cc: r@hev.cc, xry111@xry111.site, loongarch@lists.linux.dev, linux-kernel@vger.kernel.org, George Guo , George Guo X-Developer-Signature: v=1; a=ed25519-sha256; t=1765786949; l=1046; i=dongtai.guo@linux.dev; s=20251103; h=from:subject:message-id; bh=ciDWXt3BQSm1RCVw/2AyrNMAA+62PK+Q6MPycedHCU8=; b=1iI1XIbB8mlkKnO/8vzxPD4K1e2TfwP2hScjG31FoCnwv+LkIDUwXDCCUx8CJlI572cq9I5aV Tix9yEfvMpbDIlHnDIem4aXkAv3w6RY6XXVBNdIfaDkRy6miVC7x6zo X-Developer-Key: i=dongtai.guo@linux.dev; a=ed25519; pk=yHUJPGx/kAXutP/NSHpj7hWW0KQNlv3w9H6ju4qUoTM= X-Migadu-Flow: FLOW_OUT From: George Guo Add select HAVE_CMPXCHG_DOUBLE and select HAVE_ALIGNED_STRUCT_PAGE in Kconfig to enable 128-bit atomic cmpxchg support on LoongArch. Signed-off-by: George Guo --- arch/loongarch/Kconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index 5b1116733d881bc2b1b43fb93f20367add4dbc54..6fb2c253969f9ddece5478920423d7326c3ec046 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -114,6 +114,7 @@ config LOONGARCH select GENERIC_TIME_VSYSCALL select GPIOLIB select HAS_IOPORT + select HAVE_ALIGNED_STRUCT_PAGE select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_JUMP_LABEL select HAVE_ARCH_JUMP_LABEL_RELATIVE @@ -140,6 +141,7 @@ config LOONGARCH select HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS select HAVE_DYNAMIC_FTRACE_WITH_REGS select HAVE_EBPF_JIT + select HAVE_CMPXCHG_DOUBLE select HAVE_EFFICIENT_UNALIGNED_ACCESS if !ARCH_STRICT_ALIGN select HAVE_EXIT_THREAD select HAVE_GENERIC_TIF_BITS -- 2.49.0