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=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=unavailable 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 02206C10F00 for ; Wed, 27 Mar 2019 12:01:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BBBBF2087C for ; Wed, 27 Mar 2019 12:01:33 +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="piQpRlRU" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728795AbfC0MBc (ORCPT ); Wed, 27 Mar 2019 08:01:32 -0400 Received: from merlin.infradead.org ([205.233.59.134]:37524 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727557AbfC0MBc (ORCPT ); Wed, 27 Mar 2019 08:01:32 -0400 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=U9Hi9KyYljyy+PH/6dP3qjx95mgwxtpb84gVPrSfuSE=; b=piQpRlRU/ydmZ2tTBRCAQI3Rf LitEqnblZYWypKs7w/nHOigW88ofCv3crs5pfT7QPBjEGRcsuORMAiusBom3aPqPpL5DSrvEsvq4V cgOyNwyv2En5MbPBRhRzU0ZWru17FGplpIpssjz9lssjlMReRgPw112FjAqwlK+WEQwzAByz+A75a O5vrs58DlCSgd59jSgb5vCKdICKX2jo/nhwsg+s5Rm11nvqYh8kNNERRJaRFYyX6a8TF1cgFc4fvm N4IigPBuuzWxeUYGOdVkhTrMwY31DJoh1tBCnEbLVIvmQm1p1j5ocii9XuK4V0mZHahB0ySMcV3+0 vm7CIn1Zw==; Received: from [54.239.6.177] (helo=u3832b3a9db3152.ant.amazon.com) by merlin.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1h97FG-0007Vn-8e; Wed, 27 Mar 2019 12:01:26 +0000 Message-ID: Subject: Re: [PATCH v2] PCI: al: Add Amazon Annapurna Labs PCIe host controller driver From: David Woodhouse To: Lorenzo Pieralisi Cc: Jonathan Chocron , linux-pci@vger.kernel.org, bhelgaas@google.com, linux-kernel@vger.kernel.org, vaerov@amazon.com, benh@kernel.crashing.org, alisaidi@amazon.com, zeev@amazon.com, ronenk@amazon.com, barakw@amazon.com, Gustavo Pimentel , Zhou Wang Date: Wed, 27 Mar 2019 12:01:23 +0000 In-Reply-To: <20190327113911.GB8331@e107981-ln.cambridge.arm.com> References: <1553512040-4453-1-git-send-email-jonnyc@amazon.com> <1553594455-30436-1-git-send-email-jonnyc@amazon.com> <20190326121727.GA4171@e107981-ln.cambridge.arm.com> <7bab98421e2144a934d369e49454f0424c2a3758.camel@amazon.co.uk> <20190327113911.GB8331@e107981-ln.cambridge.arm.com> Content-Type: multipart/signed; micalg="sha-256"; protocol="application/x-pkcs7-signature"; boundary="=-+ZGZGt7D0FwQ7garjgdn" 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 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-+ZGZGt7D0FwQ7garjgdn Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, 2019-03-27 at 11:39 +0000, Lorenzo Pieralisi wrote: > I just want to keep MCFG ECAM quirks as simple as possible, code as it > stands is horrible enough and I wish I could remove the mechanism in > the future rather than adding more to it, hopefully we are getting > there. Obviously I cannot talk about future hardware or even admit that there is such as thing as "future hardware". But all the issues with the DW controller *have* already been worked around by different implementations, in different combinations. And I will be very sad if *we* somehow manage to make a new board which needs a new and different combination of quirks. 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