From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta0.migadu.com (out-20.mta0.migadu.com [91.218.175.20]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D689F423A6C for ; Mon, 24 Aug 2026 13:12:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.20 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787577171; cv=none; b=G0Ok8FQPTi18GU/cL8xrU0g7rYMdhiGoJICADy8XXXBFFsGMG1aa7gcJhRSbN4UxJHX6BKqfrMNklVtWpeSfWhYRruBFN7SMcLB3RWzeEbPN8fg2KrL++vCyjc6fkuH1E/HmwK0d1L0Heu3xqtulfrbTL8r4AIfDLz5B2TiBTEw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787577171; c=relaxed/simple; bh=Mx/blSqESz263sDs28xyz3r6/1DKejr69bdV/8/Q15s=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ba8fRgjOWOefxUxCBU42o2wTEFmfDhMlb2zhXl4kDg9JQcGzgZ1i+Vw3zVfL/2dvixyh4T4v+rSCK3GDRSHp6d4MPvuyGQ1zzM6WpeJgdb2ArtbDwpIPwZkeX4OoxOFxdmmMsHx7uM50PWJ4aGOQb5yxoUnx8MED6opPVh6XMvo= 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=OTGkDzCn; arc=none smtp.client-ip=91.218.175.20 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="OTGkDzCn" X-Envelope-To: linux-kernel@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=Mx/blSqESz263sDs28xyz3r6/1DKejr69bdV/8/Q15s=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1787577167; v=1; x=1788181967; b=OTGkDzCny7YqJGSv4G75bvVaR+Ky10mMJEFQwTB4WF2HOVXVTUc78aVGVqg4+aIyTedPOD99 N7kdYAfjoVmpakYrrdzf+KD3YJnZe0mir0jnOj6qYBaax0pWkMaCYxVSPnUG/W9UTKWxd8kXBt6 2n8z01ykq6LQPRtC0giQ4nGI= X-Envelope-To: linux-kernel@vger.kernel.org Received: from three-body (240e:398:90:76f0:e24e:f12a:c3d1:9cf4) by smtp.migadu.com with ESMTPS id e60acc605b8406b3; Mon, 24 Aug 2026 13:12:47 +0000 X-Mizu-Trace-ID: e60acc605b8406b3 X-Migadu-Flow: FLOW_OUT Date: Tue, 25 Aug 2026 21:12:33 +0800 From: Chen Yu To: Reinette Chatre Cc: Borislav Petkov , Dave Hansen , "Luck, Tony" , "Chen, Yu C" , "tglx@kernel.org" , "mingo@redhat.com" , "dave.hansen@linux.intel.com" , "hpa@zytor.com" , "fenghuay@nvidia.com" , "babu.moger@amd.com" , "x86@kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH v6 2/9] x86/resctrl: Require 64-bit x86 for resctrl support Message-ID: References: <980c4d9c15862de0b0dbc535b646f6b96ea46abe.1784968626.git.yu.c.chen@intel.com> <6c933b5c-620d-4684-b651-48a7ebdfc956@intel.com> <7911abea-d508-4401-b6de-2f6f598f08bf@intel.com> <20260821023700.GAaoe5zEH173SJwxga@fat_crate.local> <03e10b76-01d7-47cf-b139-a29f41e0c47f@intel.com> 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=us-ascii Content-Disposition: inline In-Reply-To: <03e10b76-01d7-47cf-b139-a29f41e0c47f@intel.com> Hi Reinette, On Fri, Aug 21, 2026 at 08:47:04AM -0700, Reinette Chatre wrote: > > On 8/20/26 7:37 PM, Borislav Petkov wrote: > > On Thu, Aug 20, 2026 at 10:48:45AM -0700, Reinette Chatre wrote: > >> My comments were only regarding accuracy of the motivation used in the > >> changelog. > > > > Well, what should be the motivation? How about "no one cares about 32-bit > > and if people wanna use resctrl on it, they're on their own."? > > It is clear to me that there is no need for a strong motivation for this change > that x86 maintainers already support. Even so, I find no justification for using > misinformation in the changelog that makes this change. This was my only feedback > to the original commit as I aim to support precise changelogs that are not confusing. > > How about replacing "There is also no realistic use case for users to build a 32-bit kernel on a server" with the following description: "32-bit x86 is maintained for legacy reasons. New CPU features are generally not enabled for 32-bit system, its test coverage keeps shrinking, and modern 32-bit distributions have become rare." thanks, Chenyu