From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B236C433DF for ; Mon, 15 Jun 2020 18:40:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 50DC420768 for ; Mon, 15 Jun 2020 18:40:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592246448; bh=wYKSzzrOtt+X56zSeQ03eBE8TXYYdvcqWroESoJynwQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=xUwOfWRHw/fyN7rYkcK1Yj28+FnYHD/antdWsHhj83+6wZttx8F+0lPq19KIzHAPc dL0UyJNPrYU8atbJ8640tM8FIqePJtXV2C7RiNGDwWp71RGZYFlY0Y/BB9Xzu6h+Pw HRErDjSslqZ5rF+b0cwJwCOmhVQoJDoOrryqLkPQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731405AbgFOSkr (ORCPT ); Mon, 15 Jun 2020 14:40:47 -0400 Received: from mail.kernel.org ([198.145.29.99]:51334 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731396AbgFOSkp (ORCPT ); Mon, 15 Jun 2020 14:40:45 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E512720756; Mon, 15 Jun 2020 18:40:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592246445; bh=wYKSzzrOtt+X56zSeQ03eBE8TXYYdvcqWroESoJynwQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=AlbC55WjaV4nWjXst3bO4kQANNHVW3FGiuCtr8vFlGcnmBmTIfSmQIdfqtWf9eBUK cIN+7izIRzNmFLxWid1bL5vtlZHL+Rmo5IF+CB3GwKRQEXag5ljpRfAwfyXz5DKRDn DLrujyfyBpBB29ranjrdCSpWM2Susi+UFnuTceTc= Date: Mon, 15 Jun 2020 20:40:41 +0200 From: "gregkh@linuxfoundation.org" To: "Luck, Tony" Cc: Borislav Petkov , "Park, Kyung Min" , "x86@kernel.org" , "linux-kernel@vger.kernel.org" , "tglx@linutronix.de" , "mingo@redhat.com" , "hpa@zytor.com" , "ak@linux.intel.com" , "Hansen, Dave" , "Shankar, Ravi V" , "Neri, Ricardo" , Ricardo Neri Subject: Re: [RFC PATCH 1/3] Documentation/x86: Add documentation for /proc/cpuinfo feature flags Message-ID: <20200615184041.GA177504@kroah.com> References: <20200610200701.16757-1-kyung.min.park@intel.com> <20200610200701.16757-2-kyung.min.park@intel.com> <20200615181527.GM14668@zn.tnic> <3908561D78D1C84285E8C5FCA982C28F7F66C552@ORSMSX115.amr.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3908561D78D1C84285E8C5FCA982C28F7F66C552@ORSMSX115.amr.corp.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jun 15, 2020 at 06:31:50PM +0000, Luck, Tony wrote: > > In general, this should say something along the lines that /proc/cpuinfo > > shows features which the kernel supports. > > > > "For a full list of CPUID flags which the CPU supports, use > > tools/arch/x86/tools/cpuid/cpuid" > > > > :-) > > Dave Hansen had suggested (offline) that we add a cpuid tool to the kernel sources. > > I think that's a lot of (duplicated) work for someone to maintain. The version of this > tool at http://www.etallen.com/cpuid.html is close to 10K lines of code. 10k is nothing, have you looked at tools/perf/ ? :) greg k-h