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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 2805FC7618B for ; Tue, 23 Jul 2019 13:45:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F081F227BF for ; Tue, 23 Jul 2019 13:44:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563889500; bh=CSjpve+3cSM6ZJKbkeAPb3xIxMkmzx+3lQ1Zunf95pQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=iv+LOZzSW9wjBmPFDZdooEBjoIEoDXoO11Gva8UD173RQQmWORVHX9TC4RntTiDNO jjQvw/cgdE++D4zeWHAcQP78Dc9yhwAOZH7icIGGt9cXT/ZCGOsVevrfqEJ9TJldBo rtVfNa1cXlp3/3AZMiC7NG4L8rOjhIIkVSrsmrHQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390306AbfGWNo6 (ORCPT ); Tue, 23 Jul 2019 09:44:58 -0400 Received: from mail.kernel.org ([198.145.29.99]:55324 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726260AbfGWNo6 (ORCPT ); Tue, 23 Jul 2019 09:44:58 -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 50EBE21738; Tue, 23 Jul 2019 13:44:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563889496; bh=CSjpve+3cSM6ZJKbkeAPb3xIxMkmzx+3lQ1Zunf95pQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=qGdBh0mSegDalo+FyjDrzzxCE7bxAvf+Ndc8T5QKbOsPF1dIXxNqzC69COpJ78ZWE lUUSmjCYEtrTyLRGOd2qsIHBhrHaffBRZtacC56v0ZesMUGMt54mKdgqUKFbOfcblq 6L2S/71wLgjwcgMvbU9LdhfXxAecCuhueGS7iiOU= Date: Tue, 23 Jul 2019 15:44:54 +0200 From: Greg KH To: Thomas Gleixner Cc: "H.J. Lu" , Mike Lothian , Tom Lendacky , bhe@redhat.com, Borislav Petkov , Dave Hansen , lijiang@redhat.com, Linux Kernel Mailing List , Andy Lutomirski , Ingo Molnar , Peter Zijlstra , the arch/x86 maintainers Subject: Re: [PATCH v3 1/2] x86/mm: Identify the end of the kernel area to be reserved Message-ID: <20190723134454.GA7260@kroah.com> References: <20190713145909.30749-1-mike@fireburn.co.uk> <20190723130513.GA25290@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.12.1 (2019-06-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 23, 2019 at 03:31:32PM +0200, Thomas Gleixner wrote: > On Tue, 23 Jul 2019, Greg KH wrote: > > On Mon, Jul 15, 2019 at 01:16:48PM -0700, H.J. Lu wrote: > > > > > > > > > > Since building a workable kernel for different kernel configurations isn't a > > > requirement for gold, I don't recommend gold for kernel. > > > > Um, it worked before this commit, and now it doesn't. "Some" companies > > are using gold for linking the kernel today... > > gold is known to fail the kernel build. x32 vdso linking is not working > since years and just because it 'works' for some configurations and breaks > for no valid reasons even with those configurations is just not good > enough. > > As there is obviously no priority for fixing gold to work proper with the > kernel, I'm not at all interested in these 'regression' reports and in odd > 'fixes' which just end up reverting or modifying perfectly valid changes > without understanding the root cause, i.e. the most horrible engineering > principle: duct-taping. > > TBH, I'm tired of it. We fail the build for clang if it does not support > asm gotos and the clang people are actively working on fixing it and we're > helping them as much as we can. The companies who used clang nevertheless > have been on their own for years and if someone wants to use gold then > nobody is preventing them from doing so. They can keep their duct-tape in > their own trees. > > See this thread for further discussion: > > https://lkml.kernel.org/r/alpine.DEB.2.21.1907161434260.1767@nanos.tec.linutronix.de Sorry, I saw that after writing that. You are right, if the others don't object, that's fine with me. I'll go poke the various build systems that are failing right now on 5.3-rc1 and try to get them fixed for this reason. thanks, greg k-h