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=-5.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, MIME_QP_LONG_LINE,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 ECF58C432C0 for ; Thu, 21 Nov 2019 18:21:55 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id DACD92067D for ; Thu, 21 Nov 2019 18:21:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=xenosoft.de header.i=@xenosoft.de header.b="FKgQsdnO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DACD92067D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=xenosoft.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 6F5EA6B036E; Thu, 21 Nov 2019 13:21:54 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 6A6496B036F; Thu, 21 Nov 2019 13:21:54 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 595AA6B0370; Thu, 21 Nov 2019 13:21:54 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0042.hostedemail.com [216.40.44.42]) by kanga.kvack.org (Postfix) with ESMTP id 43CAB6B036E for ; Thu, 21 Nov 2019 13:21:54 -0500 (EST) Received: from smtpin22.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with SMTP id D8ED8181AEF23 for ; Thu, 21 Nov 2019 18:21:53 +0000 (UTC) X-FDA: 76181103306.22.paper00_4a9e773efa61d X-HE-Tag: paper00_4a9e773efa61d X-Filterd-Recvd-Size: 3859 Received: from mo4-p01-ob.smtp.rzone.de (mo4-p01-ob.smtp.rzone.de [85.215.255.50]) by imf36.hostedemail.com (Postfix) with ESMTP for ; Thu, 21 Nov 2019 18:21:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1574360511; s=strato-dkim-0002; d=xenosoft.de; h=To:References:Message-Id:Cc:Date:In-Reply-To:From:Subject: X-RZG-CLASS-ID:X-RZG-AUTH:From:Subject:Sender; bh=jNSqqBbrYyqRlctFmIILYVh2+dTk9ekgd8eo+LGizrs=; b=FKgQsdnO6rN4sJlTIOSUL3oX1qfJhEWu5sve2oq/nZzH7tuqyn2Ly32VIi51onmXOM gXow9iGaKKXvOxoVDJqcFVN8+5OT+u8PaL3oucY3IZZC93gOkvTZ8ncraXHeXWSkTUHh eJ/kVaXzv0MGXD+e8hhf+rJpeghKesWbQs1bwRRBFTfUiRu1Unvt9mUljG+AuXgxnz8L kfCAwjkIVpo0ARV2Dwhy2y3OE9F9LwjWZlWK18c/vU2KhalpaESAkuBRdRqvIA9G0PdV Mpi/X0mGCu+QwZjZXJDBXTHzmRWWdgcKs/aZDVmGUSdLmlAIEO25sUhPiBuh3MqduWnw 49vA== X-RZG-AUTH: ":L2QefEenb+UdBJSdRCXu93KJ1bmSGnhMdmOod1DhGN0rBVhd9dFr6Kxrf+5Dj7x4QgaM9fNtIXuaJFG8GgaIfjP/sNprV1dfhtth/q6Z5w==" X-RZG-CLASS-ID: mo00 Received: from [IPv6:2a02:8109:89c0:ebfc:31b4:3e86:1da2:8b32] by smtp.strato.de (RZmta 44.29.0 AUTH) with ESMTPSA id q007c8vALIL5lAy (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (curve secp521r1 with 521 ECDH bits, eq. 15360 bits RSA)) (Client did not present a certificate); Thu, 21 Nov 2019 19:21:05 +0100 (CET) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (1.0) Subject: Re: Bug 205201 - Booting halts if Dawicontrol DC-2976 UW SCSI board installed, unless RAM size limited to 3500M From: Christian Zigotzky X-Mailer: iPhone Mail (16G102) In-Reply-To: <20191121180226.GA3852@lst.de> Date: Thu, 21 Nov 2019 19:21:04 +0100 Cc: Robin Murphy , linux-arch@vger.kernel.org, darren@stevens-zone.net, mad skateman , Benjamin Herrenschmidt , linux-kernel@vger.kernel.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org, Rob Herring , paulus@samba.org, rtd2@xtra.co.nz, "contact@a-eon.com" , linuxppc-dev , nsaenzjulienne@suse.de Content-Transfer-Encoding: quoted-printable Message-Id: <0F53CCCE-738C-4024-9C3C-4BDEB0D0728C@xenosoft.de> References: <20191121072943.GA24024@lst.de> <6eec5c42-019c-a988-fc2a-cb804194683d@xenosoft.de> <20191121180226.GA3852@lst.de> To: Christoph Hellwig X-Bogosity: Ham, tests=bogofilter, spamicity=0.000025, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 21. Nov 2019, at 19:02, Christoph Hellwig wrote: On Thu, Nov 21, 2019 at 05:34:48PM +0100, Christian Zigotzky wrote: I modified the patch and compiled a new RC8 of kernel 5.4 today. (patch=20 attached) We have to wait to Rolands test results with his SCSI PCI card. I tested it=20= today but my TV card doesn't work with this patch. I think we have two sorta overlapping issues here. One is that I think we need the bus_dma_limit, which should mostly help for something like a SCSI controller that doesn't need streaming mappings (btw, do we have more details on that somewhere?). And something weird with the videobuf things. Your change of the dma masks suggests that the driver doesn't do the right allocations and thus hits bounce buffering (swiotlb). We should fix that for real, but the fact that the bounce buffering itself also fails is even more interesting. Can you try this git branch: git://git.infradead.org/users/hch/misc.git fsl-dma-debugging Gitweb: http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/fsl-dma-d= ebugging and send me the dmesg with that with your TV adapter? - - - Yes, I will test it at the weekend. Thanks for your help. Christian=