From nobody Mon Feb 9 12:02:01 2026 Received: from out-184.mta0.migadu.com (out-184.mta0.migadu.com [91.218.175.184]) (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 009BC2D23B6 for ; Mon, 29 Dec 2025 06:34:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.184 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766990066; cv=none; b=YBytfqf5LC4G4QhEzeEmuxHvAYg397wkB+GmBONV7sB69Fl9qbkIRbeJ05BwV9a9609p0G5521W8QLWTQVLMN1B/ebcsUg06hwNOsxqzLzBdJxluSh0QAjHBawaMZYKe+OFCrQA0hqd8xIXNnkDnqj9m2P8EGae41hzvzoQaHgU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766990066; c=relaxed/simple; bh=IxKRFQ2hIDuBInN9BpkikMOrYdxArX340pZEltaRdgg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=eZ53Rr/SVRYJSntaspzA5hA6Cc5TlCwJqCbWlVrkgl5eQQ2DjxCS8dGqvG8YsbbZhb3G8FSYhAjemEC9BnQMgOEvfNCYP32UscVlEg6vfNsmD8Qgd80B7/I6EkDFfp7SmMvZX+rMLPVrKDBlgNNkrOkF3lXq6w+/s/S2Nwicku4= 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=wA+F8b8P; arc=none smtp.client-ip=91.218.175.184 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="wA+F8b8P" 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=1766990063; 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=wA+F8b8PEXDDcOwbDBGqjPlLk/43Kdb9MyxsZoPzAj6IPt+s6sR/ALqTlD9Z3WbnSGuujq TxQNcYNYvtwfy/4yYzHSWKhIu5DwjlPNeXCRGDZ0w8SzeieMvtXOMDWpjD6CPDyfwj0nUJ dNQwgNhsGKRzUwRaR4yEMauWmgFSNBM= 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 loongarch-next 4/4] LoongArch: Enable 128-bit atomics cmpxchg support Date: Mon, 29 Dec 2025 14:34:08 +0800 Message-ID: <20251229063408.34340-5-dongtai.guo@linux.dev> In-Reply-To: <20251229063408.34340-1-dongtai.guo@linux.dev> References: <20251229063408.34340-1-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