From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 6B1D814A0B9; Tue, 17 Dec 2024 18:18:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734459530; cv=none; b=UM1hIGaBPqAtqWITCCnuvOEAh3emkGa+A/l6tPG8SljRej7dwVcIRj6C0cTCCO5zmlkzlQnbb6GjdKZ5D1MZBXuxJMJy/4Q6pyBS7LM/LSX321O1cU09HXq50jgdk1gstHpMtTTs+PifownRDcFhrr+DZptJ6L4FUFmb5vlKGVI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734459530; c=relaxed/simple; bh=L5mezHAUrKBlxKAGp5q6HBmp0mEqA8j99u5PMd5XXKM=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=giGpkHg4vHMssrYXw7vB5NuiCi4iAr6wRYOoe9jcWL2w/0vrZnBm75gY5SZ5Q13Itvjyo3Vb90XL5Wibd6OliEInFr5KX6y10uJ6OKsJ7NbuCw36bbRGzZOwVw03cabb06QhbXUO2p9v3nJfdfv9I5HEv88V1isBMR4fDKiDyfQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=X5P+JkdE; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="X5P+JkdE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6C279C4CED3; Tue, 17 Dec 2024 18:18:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1734459530; bh=L5mezHAUrKBlxKAGp5q6HBmp0mEqA8j99u5PMd5XXKM=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=X5P+JkdEXd8cqTvLjef7wEoeONheGW+JUV1JzXDsxtdIvvVuqhBzPQa7L9LNjeaoF O4TTORyRScMlqptsR9otaIvC9wwzQUHggHrzZ3/f8kPZ99grOJEFD1C2g4EGORXQsn yiwEKCNmUvz+arZGgqHc/kohvMXoshbUIhapzmIFV4ERuhu6s9bMUWVS6z2SLIo7Gc /Jk3fSzTGhdzkhCfyPbBihEmXer6hzfycUQUx+thlhU5RJ94M4aFmNOgk+PGc5oqZq l5izNmlS88H0oWIXTNIFtLeY6s/gUEIfITh3FNOKbBcRsn84c+IQKACbMsrXnayIK8 fNAjEGxOUZZzQ== Message-ID: Date: Tue, 17 Dec 2024 11:18:32 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] loongarch/mm: disable WUC for pgprot_writecombine as same as ioremap_wc To: Sui Jingfeng , Xi Ruoyao , WANG Xuerui , Icenowy Zheng , Huacai Chen Cc: Andrew Morton , "Mike Rapoport (IBM)" , Baoquan He , "Matthew Wilcox (Oracle)" , David Hildenbrand , Zhen Lei , Thomas Gleixner , Zhihong Dong , loongarch@lists.linux.dev, linux-kernel@vger.kernel.org, shuah , "conduct@kernel.org" References: <20231009042841.635366-1-uwu@icenowy.me> <4f1af31b-15be-cb47-6b34-45de1b5696be@loongson.cn> <42b0e6f6-c2b5-49c6-b1f2-0200bef913da@xen0n.name> <3641d3fe-c2e7-868f-ab0d-3951c9a78b6d@loongson.cn> <8373ccfd93b0402caf9f5c06a2d9b93b3c0d0b49.camel@xry111.site> Content-Language: en-US From: Shuah In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 12/2/24 09:23, Sui Jingfeng wrote: > Hi, > >> IIUC this is a hardware bug of 7A1000 and 7A2000, so the proper location >> of the workaround is in the bridge chip driver.  Or am I >> misunderstanding something? >> > > You are misunderstanding everything and ranting like a dog. > Sui Jingfeng, This is not the way to work with your fellow developers in the community to express disagreements. I would recommend following up with an apology. thanks, -- Shuah