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=-5.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 769E4C432C3 for ; Tue, 26 Nov 2019 11:26:54 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 38F152075C for ; Tue, 26 Nov 2019 11:26:54 +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="hUVDfrlp" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 38F152075C 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 BF6CB6B02DF; Tue, 26 Nov 2019 06:26:53 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id BCF046B02E0; Tue, 26 Nov 2019 06:26:53 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A961C6B02E1; Tue, 26 Nov 2019 06:26:53 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0114.hostedemail.com [216.40.44.114]) by kanga.kvack.org (Postfix) with ESMTP id 9424C6B02DF for ; Tue, 26 Nov 2019 06:26:53 -0500 (EST) Received: from smtpin26.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with SMTP id 260C145AB for ; Tue, 26 Nov 2019 11:26:53 +0000 (UTC) X-FDA: 76198201506.26.goat68_5918fac74031f X-HE-Tag: goat68_5918fac74031f X-Filterd-Recvd-Size: 4431 Received: from mo4-p01-ob.smtp.rzone.de (mo4-p01-ob.smtp.rzone.de [81.169.146.167]) by imf08.hostedemail.com (Postfix) with ESMTP for ; Tue, 26 Nov 2019 11:26:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1574767610; s=strato-dkim-0002; d=xenosoft.de; h=In-Reply-To:Date:Message-ID:From:References:Cc:To:Subject: X-RZG-CLASS-ID:X-RZG-AUTH:From:Subject:Sender; bh=XMLW3ZOSKguCOTt53NHCRHDrLj4NFW5PozSyNNqJ0vs=; b=hUVDfrlpHUOyX8UspxuassI6dk0cRO0OW+HPpE+1RzKZEHiVxA239qn+y77dykVfOA T76r8Eft9iJdp7EYhCme/3lrffYzLl0P7bg4hbxq1XaLp8aJ/YbPw2OTcHHWspjGahZc xBti81J2jMpRVfXlM+3ClmGWk4YnjE1uLTgTnI092GRf6Hf6cf9pTk15U/0k+Fh+dnF5 sAVIaodReVVlauceXlkAqZgCqFZdpqeO9SoIojaT4M2qrmkTAB6G/ca41Hg9f6GJlZmv mcPGeS34/a7fVqZE1KmUyGXM0TYltVeYSh7AYeqIioRd1twdYxiRV/fweXGes2Ky0h/f /s6g== X-RZG-AUTH: ":L2QefEenb+UdBJSdRCXu93KJ1bmSGnhMdmOod1DhGM4l4Hio94KKxRySfLxnHfJ+Dkjp5DdBJSrwuuqxvPhSIh0PhkEvMsMre1rbZ/xz+jsR" X-RZG-CLASS-ID: mo00 Received: from [IPv6:2a02:8109:89c0:ebfc:14bb:b5af:17db:dc1] by smtp.strato.de (RZmta 45.0.2 AUTH) with ESMTPSA id x0678cvAQBQc8Vv (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); Tue, 26 Nov 2019 12:26:38 +0100 (CET) Subject: Re: Bug 205201 - Booting halts if Dawicontrol DC-2976 UW SCSI board installed, unless RAM size limited to 3500M To: Christoph Hellwig 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, Mike Rapoport References: <20191121072943.GA24024@lst.de> <6eec5c42-019c-a988-fc2a-cb804194683d@xenosoft.de> <20191121180226.GA3852@lst.de> <2fde79cf-875f-94e6-4a1b-f73ebb2e2c32@xenosoft.de> <20191125073923.GA30168@lst.de> From: Christian Zigotzky Message-ID: <4681f5fe-c095-15f5-9221-4b55e940bafc@xenosoft.de> Date: Tue, 26 Nov 2019 12:26:38 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.1 MIME-Version: 1.0 In-Reply-To: <20191125073923.GA30168@lst.de> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: de-DE X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 25 November 2019 at 08:39 am, Christoph Hellwig wrote: > On Sat, Nov 23, 2019 at 12:42:27PM +0100, Christian Zigotzky wrote: >> Hello Christoph, >> >> Please find attached the dmesg of your Git kernel. > Thanks. It looks like on your platform the swiotlb buffer isn't > actually addressable based on the bus dma mask limit, which is rather > interesting. swiotlb_init uses memblock_alloc_low to allocate the > buffer, and I'll need some help from Mike and the powerpc maintainers > to figure out how that select where to allocate the buffer from, and > how we can move it to a lower address. My gut feeling would be to try > to do what arm64 does and define a new ARCH_LOW_ADDRESS_LIMIT, preferably > without needing too much arch specific magic. > > As a quick hack can you try this patch on top of the tree from Friday? > > diff --git a/include/linux/memblock.h b/include/linux/memblock.h > index f491690d54c6..e3f95c362922 100644 > --- a/include/linux/memblock.h > +++ b/include/linux/memblock.h > @@ -344,7 +344,7 @@ static inline int memblock_get_region_node(const struct memblock_region *r) > #define MEMBLOCK_LOW_LIMIT 0 > > #ifndef ARCH_LOW_ADDRESS_LIMIT > -#define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL > +#define ARCH_LOW_ADDRESS_LIMIT 0x0fffffffUL > #endif > > phys_addr_t memblock_phys_alloc_range(phys_addr_t size, phys_addr_t align, > Hello Christoph, The PCI TV card works with your patch! I was able to patch your Git kernel with the patch above. I haven't found any error messages in the dmesg yet. Thank you! Cheers, Christian