From nobody Sun Feb 8 18:48:57 2026 Received: from out-185.mta0.migadu.com (out-185.mta0.migadu.com [91.218.175.185]) (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 D79F62836A6 for ; Tue, 30 Dec 2025 01:34:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.185 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767058475; cv=none; b=t04Ebh18Ua4T+Nxh20OqR/YYDSumo3JZE8+2Nv39qzVjEkNAuNCQx6UXaG2k5jCKHVx+lh7Zm7eRbTzBW96pT0rW2f5ZoWr60phXRrzfqxTDPbsQaGU3A2h2NFBj5G7tsg5yG+Q86lMGB7e0O66PpwHj3SiBj1IUoRcAIPpsw4M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767058475; c=relaxed/simple; bh=IxKRFQ2hIDuBInN9BpkikMOrYdxArX340pZEltaRdgg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=UHzh08yiKYOv6hNVmams1Uetzd5N7SWKjqjW9SmZlSgKgAO5Jx2NxHCjXmJ1Zg1oQ2dcUXUCoDnOdI2w3kR/+gdEFE/g2/ciMtg3OGa2reyasTC/bUFU5wHuUni7XXR4JyIpxtkn8Yf5QMJbDrXhgFqbiFJRYbyfZhnVGOyYEVk= 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=dTRPPqyd; arc=none smtp.client-ip=91.218.175.185 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="dTRPPqyd" 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=1767058471; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=0Busr31vYwHCmPhkYpBb+hPfItK01jR0m3O6Awmw6lU=; b=dTRPPqyd879K9y2jbN3yPWSU9SD21ROApdpt/DwHnkuaCUfQJIAO1h/oHoS5V1CWDmgvQx zeIkNOLWnzssT0jzW+bXZlal00sWZbw1DSS7+k33s77rAMHSaDO+N0+Cy88BTSLkbZ1imF UwTnyOuhR/6bGCYPaY6De/TPvM0SAco= From: George Guo To: hengqi.chen@gmail.com Cc: chenhuacai@kernel.org, dongtai.guo@linux.dev, guodongtai@kylinos.cn, kernel@xen0n.name, lianyangyang@kylinos.cn, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, r@hev.cc, xry111@xry111.site Subject: [PATCH v7 loongarch-next 4/4] LoongArch: Enable 128-bit atomics cmpxchg support Date: Tue, 30 Dec 2025 09:34:17 +0800 Message-ID: <20251230013417.37393-5-dongtai.guo@linux.dev> In-Reply-To: <20251230013417.37393-1-dongtai.guo@linux.dev> References: <20251230013417.37393-1-dongtai.guo@linux.dev> 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-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" From: George Guo Add select HAVE_CMPXCHG_DOUBLE and select HAVE_ALIGNED_STRUCT_PAGE in Kconf= ig 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 730f34214519..d4de823276d1 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_BITREVERSE select HAVE_ARCH_JUMP_LABEL @@ -141,6 +142,7 @@ 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 --=20 2.49.0