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=-3.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 9A187C2D0A3 for ; Sat, 24 Oct 2020 05:36:23 +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 236592225F for ; Sat, 24 Oct 2020 05:36:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 236592225F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=m5p.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.11451.30376 (Exim 4.92) (envelope-from ) id 1kWCDa-0003XZ-NJ; Sat, 24 Oct 2020 05:35:54 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 11451.30376; Sat, 24 Oct 2020 05:35:54 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kWCDa-0003XS-KF; Sat, 24 Oct 2020 05:35:54 +0000 Received: by outflank-mailman (input) for mailman id 11451; Sat, 24 Oct 2020 05:35:53 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kWCDZ-0003XN-QT for xen-devel@lists.xenproject.org; Sat, 24 Oct 2020 05:35:53 +0000 Received: from mailhost.m5p.com (unknown [74.104.188.4]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 4b8561f3-1386-4cf9-8494-0455bc26722f; Sat, 24 Oct 2020 05:35:52 +0000 (UTC) Received: from m5p.com (mailhost.m5p.com [IPv6:2001:470:1f07:15ff:0:0:0:f7]) by mailhost.m5p.com (8.15.2/8.15.2) with ESMTPS id 09O5ZfwU097466 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Sat, 24 Oct 2020 01:35:47 -0400 (EDT) (envelope-from ehem@m5p.com) Received: (from ehem@localhost) by m5p.com (8.15.2/8.15.2/Submit) id 09O5Zeol097465; Fri, 23 Oct 2020 22:35:40 -0700 (PDT) (envelope-from ehem) Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kWCDZ-0003XN-QT for xen-devel@lists.xenproject.org; Sat, 24 Oct 2020 05:35:53 +0000 X-Inumbo-ID: 4b8561f3-1386-4cf9-8494-0455bc26722f Received: from mailhost.m5p.com (unknown [74.104.188.4]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 4b8561f3-1386-4cf9-8494-0455bc26722f; Sat, 24 Oct 2020 05:35:52 +0000 (UTC) Received: from m5p.com (mailhost.m5p.com [IPv6:2001:470:1f07:15ff:0:0:0:f7]) by mailhost.m5p.com (8.15.2/8.15.2) with ESMTPS id 09O5ZfwU097466 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Sat, 24 Oct 2020 01:35:47 -0400 (EDT) (envelope-from ehem@m5p.com) Received: (from ehem@localhost) by m5p.com (8.15.2/8.15.2/Submit) id 09O5Zeol097465; Fri, 23 Oct 2020 22:35:40 -0700 (PDT) (envelope-from ehem) Date: Fri, 23 Oct 2020 22:35:40 -0700 From: Elliott Mitchell To: Stefano Stabellini Cc: Julien Grall , roman@zededa.com, xen-devel@lists.xenproject.org Subject: Re: Xen on RP4 Message-ID: <20201024053540.GA97417@mattapan.m5p.com> References: <20201012215751.GB89158@mattapan.m5p.com> <20201016003024.GA13290@mattapan.m5p.com> <23885c28-dee5-4e9a-dc43-6ccf19a94df6@xen.org> <20201022021655.GA74011@mattapan.m5p.com> <20201023005629.GA83870@mattapan.m5p.com> <20201023211941.GA90171@mattapan.m5p.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Fri, Oct 23, 2020 at 04:59:30PM -0700, Stefano Stabellini wrote: > Note that I tried to repro the issue here at my end but it works for me > with device tree. So the swiotlb_init memory allocation failure probably > only shows on ACPI, maybe because ACPI is reserving too much low memory. Found it. Take a look at 437b0aa06a014ce174e24c0d3530b3e9ab19b18b PLATFORM_START(rpi4, "Raspberry Pi 4") .compatible = rpi4_dt_compat, .blacklist_dev = rpi4_blacklist_dev, + .dma_bitsize = 30, PLATFORM_END Where this is used to match against a *device-tree*. ACPI has a distinct means of specifying a limited DMA-width; the above fails, because it assumes a *device-tree*. -- (\___(\___(\______ --=> 8-) EHM <=-- ______/)___/)___/) \BS ( | ehem+sigmsg@m5p.com PGP 87145445 | ) / \_CS\ | _____ -O #include O- _____ | / _/ 8A19\___\_|_/58D2 7E3D DDF4 7BA6 <-PGP-> 41D1 B375 37D0 8714\_|_/___/5445