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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_2 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 1F416C3A5A5 for ; Mon, 2 Sep 2019 13:53:02 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E56BE21882 for ; Mon, 2 Sep 2019 13:53:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="GbYQ1Gza" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E56BE21882 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1i4mlG-0000bd-MV; Mon, 02 Sep 2019 13:52:50 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1i4mlF-0000bQ-DF for xen-devel@lists.xenproject.org; Mon, 02 Sep 2019 13:52:49 +0000 X-Inumbo-ID: ecfab544-cd88-11e9-b95f-bc764e2007e4 Received: from merlin.infradead.org (unknown [2001:8b0:10b:1231::1]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id ecfab544-cd88-11e9-b95f-bc764e2007e4; Mon, 02 Sep 2019 13:52:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=Mime-Version:Content-Type:References: In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=ZtGP1axuOCyhNkKj2mh6BjrfWMEBmK7mLri4hZFxcMg=; b=GbYQ1GzaDZEDdioyAlJbLYKgO /KnWNrEd2yVkXtGMaA22yDnz40RLgY6+STYsciuRc1YpjjOVK8uYKHNRVeYIlFkIJI1GTWmpjYLZu aq/2UMKzSQmd43uKpL2sdd4/7dfBHTl7gdmZLd+p3trXorjlcokmKLZYfqTdUyq5VbZo7L5fqdUa1 6o0uFUX63RbHeC+Gm0xbMJEw1cGGE5kRKYpOxmxtk5upPPa7Ry0xQHMnuDGDt4jDeHzeNGTtAOLbg 1uS3EZtSeSTutdfHKiOjOx9M3QaAd0T4hdnMcMYqZl5p5AGhZ1nmcJ85lh7zsvMHlQLU8Gvqv0Pun A2y3RTIyQ==; Received: from [2001:8b0:10b:1:4a2a:e3ff:fe14:8625] (helo=u3832b3a9db3152.ant.amazon.com) by merlin.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1i4mkz-0000X4-Av; Mon, 02 Sep 2019 13:52:33 +0000 Message-ID: From: David Woodhouse To: Jan Beulich Date: Mon, 02 Sep 2019 14:52:31 +0100 In-Reply-To: References: <012a0e6de52d8a0ad50b0b784362cf509768990e.camel@infradead.org> <20190821163542.172063-1-dwmw2@infradead.org> <20190821163542.172063-4-dwmw2@infradead.org> <05a88a2bb876b3a165746b91774dc6ee05d86b03.camel@infradead.org> X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.1 Mime-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by merlin.infradead.org. See http://www.infradead.org/rpr.html Subject: Re: [Xen-devel] [PATCH v3 4/5] x86/boot: Copy 16-bit boot variables back up to Xen image X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Andrew Cooper , xen-devel@lists.xenproject.org, Wei Liu , Roger Pau =?ISO-8859-1?Q?Monn=E9?= Content-Type: multipart/mixed; boundary="===============7726471754638925477==" Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" --===============7726471754638925477== Content-Type: multipart/signed; micalg="sha-256"; protocol="application/x-pkcs7-signature"; boundary="=-Q5wwo4MZjHTaIlq9v28j" --=-Q5wwo4MZjHTaIlq9v28j Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, 2019-09-02 at 15:47 +0200, Jan Beulich wrote: > On 02.09.2019 14:51, David Woodhouse wrote: > > On Mon, 2019-09-02 at 09:44 +0200, Jan Beulich wrote: > > > Right, just one pair should survive. And seeing how things work befor= e > > > this series I think it indeed should be linker script symbols only. > > > And then the ALIGN() ahead of the "start" ones should stay, but there= 's > > > no need for one on the "end" ones (again as is currently the case). > >=20 > > If we don't align the end symbol then we need to go back to rounding up > > the length with ((boot_trampoline_end - boot_trampoline_start) + 3) / 4 > > again though, right? >=20 > Wait - we've been talking about the *_rel sections / tables here, > haven't we? All entries of these tables ought to be of equal size, > and hence alignment of a table's "end" label automatically matches > the size of the table entries. The specific one we were taking about just then was bootdata_{start,end} which is the data itself to be copied up/down, not the relocations. 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