Received: by 2002:ac0:a594:0:0:0:0:0 with SMTP id m20-v6csp66284imm; Thu, 10 May 2018 15:36:48 -0700 (PDT) X-Google-Smtp-Source: AB8JxZpwbXGPfMSra0oGj1Yk7AviNmTZSLCn4grbDwzg0t1/zxXgklDcsJhbnlO4jhHuTxqLOfkn X-Received: by 2002:a65:4e03:: with SMTP id r3-v6mr2500136pgt.121.1525991808932; Thu, 10 May 2018 15:36:48 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1525991808; cv=none; d=google.com; s=arc-20160816; b=W5JWUVvStxpwhMiR+q10TGSe7+EHHf6dtkbQGkdXP/3xp1R+NpzkkVXK5sibCV6G0x FcqfZN0dfbGiMaS+1bL7uMYdcIBReJiawa6c3naL/z1gy8VBj7BEKxDBZnn3R7OuGQFv BLT+MAU01bVgzcFSp4SlMAjq3gtiKNaKKaOVuXHh+Ej89y6omgCLDQ00sDLIdIAtMKos 2LYCXwR38ggD+jIKnQ1s/LbMJaS9k4jXif4HuzU2jV3Ou/YyYqq9nihqF6xHrxEAuNKc lVfMVg/qHk5UfeBh33R+T+0v+E4qSJFRTSHDADKUtx6V0+LUNjuLqUZxEIFTnDhj9eAH dTmA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:content-disposition :mime-version:message-id:subject:cc:to:from:date :arc-authentication-results; bh=OXRSRtutoCo6yeyR/ywZNcTl+SCmfjF/ARuYQbvKH98=; b=pamVxu4P7711ve7LUNmU/6Zue8sgQwU/RPRvUy3NZNeenymAG8HXVKpcdnhNfpxiuk PIObNxEpWU7PC9w0xY1qlPi6ka0cuRjLHPSAVj30btN9e/RwOaAfobz0nJ0Mt0CCw7sc lLgTLSwqmw2luQOAVy42F6BFtEWq4Am4fFRf3YEHyjnK9d5IeP9lx4uMRnWK0oQGpoxt 9RpGy9Mh1qgAckZhusIxJ5AaNadK6w7VINoQl2joyRopT42bb1QWZHO4armAVMaPSZM+ CTv4GHm+1SCR8jiYZT0ICDtgFDQjfsUM0gFl+cIxpHhMoNCT8TPCsQBuuTwmz89hofxk OYUg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id k3-v6si1764316pld.45.2018.05.10.15.36.33; Thu, 10 May 2018 15:36:48 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750937AbeEJWgW (ORCPT + 99 others); Thu, 10 May 2018 18:36:22 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:48874 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750711AbeEJWgV (ORCPT ); Thu, 10 May 2018 18:36:21 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 74254400187F; Thu, 10 May 2018 22:36:21 +0000 (UTC) Received: from treble (ovpn-120-30.rdu2.redhat.com [10.10.120.30]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 0A0702166BAD; Thu, 10 May 2018 22:36:20 +0000 (UTC) Date: Thu, 10 May 2018 17:36:19 -0500 From: Josh Poimboeuf To: Fengguang Wu Cc: linux-kernel@vger.kernel.org, LKP Subject: cross-compiling a 64-bit kernel on a 32-bit host Message-ID: <20180510223619.jwdlle42brksfp4v@treble> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline User-Agent: NeoMutt/20180323 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Thu, 10 May 2018 22:36:21 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Thu, 10 May 2018 22:36:21 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'jpoimboe@redhat.com' RCPT:'' Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Fengguang, I occasionally get compilation bug reports from people who are cross-compiling an x86-64 kernel target on an x86-32 host. Any chance the 0-day build bot could test that configuration? I think just building a defconfig would be sufficient. It would help sort out issues in objtool and other host-built scripts. -- Josh