From nobody Sat Feb 7 10:07:55 2026 Received: from out-188.mta0.migadu.com (out-188.mta0.migadu.com [91.218.175.188]) (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 AAB5B32E6B4 for ; Mon, 5 Jan 2026 10:55:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.188 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767610535; cv=none; b=Ohem98XNzzjsCv96kONlpl5X9m07Cy3RtGpllGdzDdOhQX1ke66ssKg6mcN5YQeBY4KL76uLKjp66Ig0ofr0+zxvfAUcy+0H4UCnkvp/01nlHbXcb1kiITfSS9P2DP/Ci/OTjJ8WVzDTz/TIVfnHFsga/o5u5z52kMtEDJSxOqg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767610535; c=relaxed/simple; bh=VvIMH6uDCfo9dHgHYOA50uC9oucTRbBEH2ez1L+nu/0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=LybF4VWg19Zuc0QuZ4ygS0g6ojGlJ2hPI2yPd1JMzxQLN891eoKGx3QhHuNdzFVhOkTTnRj5KTJqMaZkbjeDlefh41QhhMsP9RUTNrAy17++INX9VCHPXfJMdjgeuxeWIN4efdB5FLvAHBzGMno8au/8Y5kvwnRbpPErjFnRRuo= 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=ELLsImp8; arc=none smtp.client-ip=91.218.175.188 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="ELLsImp8" 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=1767610529; 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=90lPtiX5iGw6HKdw2bSu0Tovhut4F8g9SrqqXr/vigA=; b=ELLsImp8JFptd+lTJNZSfdVorahEefI8KjaNa2rDC5GcGrfiODzfnoECuPDP4KG1Af2MAv XWN9r7PSsQAYwTLsMndefSojZCDLqhWOu7DGCBLTJt/LjJYpp093OYoKmYaVQbho4OEG/S A4LN5JMvYdwODSvvWQiDGuayJzSZVrA= From: George Guo To: chenhuacai@kernel.org Cc: dongtai.guo@linux.dev, hengqi.chen@gmail.com, kernel@xen0n.name, lianyangyang@kylinos.cn, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, r@hev.cc, xry111@xry111.site, George Guo Subject: [PATCH v9 loongarch-next 4/4] LoongArch: Enable 128-bit atomics cmpxchg support Date: Mon, 5 Jan 2026 18:55:14 +0800 Message-ID: <20260105105514.76021-5-dongtai.guo@linux.dev> In-Reply-To: <20260105105514.76021-1-dongtai.guo@linux.dev> References: <20260105105514.76021-1-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. Reviewed-by: Hengqi Chen Tested-by: Hengqi Chen 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..f9845ebec1a4 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 @@ -130,6 +131,7 @@ config LOONGARCH select HAVE_ARCH_TRANSPARENT_HUGEPAGE select HAVE_ARCH_USERFAULTFD_MINOR if USERFAULTFD select HAVE_ASM_MODVERSIONS + select HAVE_CMPXCHG_DOUBLE select HAVE_CONTEXT_TRACKING_USER select HAVE_C_RECORDMCOUNT select HAVE_DEBUG_KMEMLEAK --=20 2.43.0