From nobody Mon Dec 1 23:59:45 2025 Received: from out-170.mta0.migadu.com (out-170.mta0.migadu.com [91.218.175.170]) (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 D79E730B50D for ; Wed, 26 Nov 2025 02:06:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.170 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764122773; cv=none; b=JBxptOhCUDnQ1NnOXHF/GKeb8y1lMfLROgY6Ok68ySh2EmYGly2m/Z3lWavbCH7KJc0DyexqvKgyiMNzmHEnlwzcbok0FpetYsP9GGpyP40SnGV30QYSJ/aXqE/IIZ6UKmGXmLCSNYBTFzoOSz7RBwLHbf4rLfx9dQD5+M5NJGw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764122773; c=relaxed/simple; bh=8TifsbTNXqYIYqD9lXrhIsElmC4Aa87KXjt2KqkZcjI=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=KIqjQPiNslc+2++tEZUstKP4PoHsXUX1jdf5YA2Z1RVPpiu0EjHd3D52zD0niCGHT6GX7J4ihk8gTGRFDuE3AK6+Aof3pHlJ8RD/LcHvC7Pf+6kW/oSiUvzdbLAguHts8zt4CJd0ljF6NwFwsEpRUzZWdxAp9+adIhCbuVY9Xlk= 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=VC7tQSx2; arc=none smtp.client-ip=91.218.175.170 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="VC7tQSx2" 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=1764122767; 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=qd6hbMJvs0YabNz3CCTWdf/jCMHxiJ1lcDXBCRGzJYI=; b=VC7tQSx2GWvoQl5CDS+jqGUm/3Y15uXxTw3eoZVwbPB53Df1zLs0yFoWXLP4RmQ5saoyx4 kXq5QssRG0UNdygsN898jAgzD7rcQaUPII91vOLPTW0yFqrkXfu4o8Li3glhcfKl+CVeR9 nVr9cC1er/puluA+u1/osRfI3JBwY2c= From: George Guo Date: Wed, 26 Nov 2025 10:05:51 +0800 Subject: [PATCH v3 2/2] LoongArch: Enable 128-bit atomics cmpxchg support Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251126-2-v3-2-851b5a516801@linux.dev> References: <20251126-2-v3-0-851b5a516801@linux.dev> In-Reply-To: <20251126-2-v3-0-851b5a516801@linux.dev> To: Huacai Chen , WANG Xuerui Cc: loongarch@lists.linux.dev, linux-kernel@vger.kernel.org, George Guo , George Guo X-Developer-Signature: v=1; a=ed25519-sha256; t=1764122759; l=1046; i=dongtai.guo@linux.dev; s=20251103; h=from:subject:message-id; bh=jJgZhwA4ooo3Ax4Z4naKB2Lj5KNiYF1TJyBIlsCbAQU=; b=EyzwY+EjUXHL5YSCwu7+wb0RxiIJz3LVNu5NtKXY13cQQzJ5Ii99mr4WisRxWmXW01LlPFxoZ 9qKcKOKjfKhBYDvaPnNUCFFpNDWh5MwhILDx1VpIcqmWv92y3J67zIo 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 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 5b1116733d881bc2b1b43fb93f20367add4dbc54..6fb2c253969f9ddece547892042= 3d7326c3ec046 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 --=20 2.48.1