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=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham 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 561E4C6778C for ; Fri, 6 Jul 2018 19:34:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 176DC223B1 for ; Fri, 6 Jul 2018 19:34:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 176DC223B1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934886AbeGFTeQ (ORCPT ); Fri, 6 Jul 2018 15:34:16 -0400 Received: from mail-qt0-f173.google.com ([209.85.216.173]:37111 "EHLO mail-qt0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934561AbeGFTeN (ORCPT ); Fri, 6 Jul 2018 15:34:13 -0400 Received: by mail-qt0-f173.google.com with SMTP id a18-v6so10860177qtj.4 for ; Fri, 06 Jul 2018 12:34:13 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=CsQZiSgyXXUQVMADjLlymBSnkkoZaWw4LxKdkpj3rzw=; b=i0M0piMBYN1mxiJhvrK/myQTCX+viLnP3W2oXGoBszrNry90YkAUgqhz6xDMmMJMho nlvyFgSw/Xoiw7WRjt20EgsnEdLLQPW3Az7lyD5/5U+5g0ir8eFvjqcVv4HwN+5EuNNM W9obTk56VC8hl9bPutqEhcYkfchpwEOvdDJki0pRnNv4KvRYOr2iTEemrCZgXqk9HeIt E2XNbje9Fl2ybK0RJ7ix4nfh/2tZxOpHQwRR9SVHumc8Iboz+usau66fyHzvFRz3PI6a wAAV5nEz6WewataJg2GZDXb5pPJPp8XlFHIQDPf5GoMxRhJa3K95d8FQMXI+WQfIlKN1 u1Yw== X-Gm-Message-State: APt69E3EDBHznRL150ZMpt6/Fhcn+lF0aclFIsunJmwsKtdtNlHbxFcl QZJS1QTXZI4Ty+WW4BS3OSpLvg== X-Google-Smtp-Source: AAOMgpeNsQZ8Zcjc2IgnvZXgjP5ZbYSVfTHORza7DWziocCUziKU8zvT2+wb829h6q+gGlQUNgCUOw== X-Received: by 2002:a0c:b65a:: with SMTP id q26-v6mr10077861qvf.43.1530905652537; Fri, 06 Jul 2018 12:34:12 -0700 (PDT) Received: from trogon.sfo.coreos.systems ([2604:2000:80c5:4400:140c:73de:b623:c90]) by smtp.gmail.com with ESMTPSA id c20-v6sm2892234qtq.30.2018.07.06.12.34.10 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 06 Jul 2018 12:34:10 -0700 (PDT) Date: Fri, 6 Jul 2018 15:34:08 -0400 From: Benjamin Gilbert To: Andi Kleen Cc: "Kirill A. Shutemov" , Masahiro Yamada , Gabriel C , linux-x86_64@vger.kernel.org, LKML , "Kirill A. Shutemov" , Ingo Molnar , Thomas Gleixner , "H. Peter Anvin" , X86 ML , bero@lindev.ch, Michal Marek Subject: Re: 4.17.x won't boot due to "x86/boot/compressed/64: Handle 5-level paging boot if kernel is above 4G" Message-ID: <20180706193408.GA1705@trogon.sfo.coreos.systems> References: <20180701213243.GA20180@trogon.sfo.coreos.systems> <20180703124403.veiak4vnbxtmwhv2@kshutemo-mobl1> <20180703142150.tqckl7miou3wf33q@kshutemo-mobl1> <20180704150857.szamkvy6jx3fqxlf@kshutemo-mobl1> <20180706104144.6p2s43o3sqc6d5y3@kshutemo-mobl1> <20180706162928.73jfqtdwdcwtagui@kshutemo-mobl1> <20180706181110.GC25550@tassilo.jf.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180706181110.GC25550@tassilo.jf.intel.com> User-Agent: Mutt/1.10.0 (2018-05-17) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 06, 2018 at 11:11:10AM -0700, Andi Kleen wrote: > There are valid use cases to override the flags. I use it sometimes too, > and know some other people do to. > > But you need to know what you're doing. > > Perhaps a warning during build would be reasonable. So if you ask > for a build log you would see it. In our case, the package is presumably passing LDFLAGS="" to override the LDFLAGS environment variable already set by the packaging system. This has worked for years without a problem. --Benjamin Gilbert