From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Zigotzky Subject: Bug 205201 - overflow of DMA mask and bus mask Date: Tue, 5 Nov 2019 08:56:27 +0100 Message-ID: <46025f1b-db20-ac23-7dcd-10bc43bbb6ee@xenosoft.de> References: <2242B4B2-6311-492E-BFF9-6740E36EC6D4@xenosoft.de> <84558d7f-5a7f-5219-0c3a-045e6b4c494f@xenosoft.de> <20181213091021.GA2106@lst.de> <835bd119-081e-a5ea-1899-189d439c83d6@xenosoft.de> <76bc684a-b4d2-1d26-f18d-f5c9ba65978c@xenosoft.de> <20181213112511.GA4574@lst.de> <008c981e-bdd2-21a7-f5f7-c57e4850ae9a@xenosoft.de> <20190103073622.GA24323@lst.de> <71A251A5-FA06-4019-B324-7AED32F7B714@xenosoft.de> <1b0c5c21-2761-d3a3-651b-3687bb6ae694@xenosoft.de> <3504ee70-02de-049e-6402-2d530bf55a84@xenosoft.de> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <3504ee70-02de-049e-6402-2d530bf55a84-KCoaydhb8eAb1SvskN2V4Q@public.gmane.org> Content-Language: de-DE List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Christoph Hellwig , linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, Olof Johansson List-Id: linux-arch.vger.kernel.org SGkgQWxsLAoKV2Ugc3RpbGwgaGF2ZSBETUEgcHJvYmxlbXMgd2l0aCBzb21lIFBDSSBkZXZpY2Vz LiBTaW5jZSB0aGUgUG93ZXJQQyAKdXBkYXRlcyA0LjIxLTEgWzFdIHdlIG5lZWQgdG8gZGVjcmVh c2UgdGhlIFJBTSB0byAzNTAwTUIgKG1lbT0zNTAwTSkgaWYgCndlIHdhbnQgdG8gd29yayB3aXRo IG91ciBQQ0kgZGV2aWNlcy4gVGhlIEZTTCBQNTAyMCBhbmQgUDUwNDAgaGF2ZSB0aGVzZSAKcHJv YmxlbXMgY3VycmVudGx5LgoKRXJyb3IgbWVzc2FnZToKClvCoMKgIDI1LjY1NDg1Ml0gYnR0diAx MDAwOjA0OjA1LjA6IG92ZXJmbG93IDB4MDAwMDAwMDBmZTA3NzAwMCs0MDk2IG9mIApETUEgbWFz ayBmZmZmZmZmZiBidXMgbWFzayBkZjAwMDAwMAoKQWxsIDUueCBMaW51eCBrZXJuZWxzIGNhbid0 IGluaXRpYWxpemUgYSBTQ1NJIFBDSSBjYXJkIGFueW1vcmUgc28gCmJvb3Rpbmcgb2YgYSBMaW51 eCB1c2VybGFuZCBpc24ndCBwb3NzaWJsZS4KClBMRUFTRSBjaGVjayB0aGUgRE1BIGNoYW5nZXMg aW4gdGhlIFBvd2VyUEMgdXBkYXRlcyA0LjIxLTEgWzFdLiBUaGUgCmtlcm5lbCA0LjIwIHdvcmtz IHdpdGggYWxsIFBDSSBkZXZpY2VzIHdpdGhvdXQgbGltaXRhdGlvbiBvZiBSQU0uCgpXZSBjcmVh dGVkIGEgYnVnIHJlcG9ydCBhIG1vbnRoIGFnby4gWzJdCgpUaGFua3MsCkNocmlzdGlhbgoKWzFd IApodHRwczovL2dpdC5rZXJuZWwub3JnL3B1Yi9zY20vbGludXgva2VybmVsL2dpdC90b3J2YWxk cy9saW51eC5naXQvY29tbWl0Lz9pZD04ZDY5NzMzMjdlZTg0YzJmNDBkZDllZmQ4OTI4ZDRhMTE4 NmM5NmUyClsyXSBodHRwczovL2J1Z3ppbGxhLmtlcm5lbC5vcmcvc2hvd19idWcuY2dpP2lkPTIw NTIwMQoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmlv bW11IG1haWxpbmcgbGlzdAppb21tdUBsaXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczov L2xpc3RzLmxpbnV4Zm91bmRhdGlvbi5vcmcvbWFpbG1hbi9saXN0aW5mby9pb21tdQ== From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mo4-p02-ob.smtp.rzone.de ([85.215.255.81]:24547 "EHLO mo4-p02-ob.smtp.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387954AbfKEIIc (ORCPT ); Tue, 5 Nov 2019 03:08:32 -0500 Subject: Bug 205201 - overflow of DMA mask and bus mask From: Christian Zigotzky References: <2242B4B2-6311-492E-BFF9-6740E36EC6D4@xenosoft.de> <84558d7f-5a7f-5219-0c3a-045e6b4c494f@xenosoft.de> <20181213091021.GA2106@lst.de> <835bd119-081e-a5ea-1899-189d439c83d6@xenosoft.de> <76bc684a-b4d2-1d26-f18d-f5c9ba65978c@xenosoft.de> <20181213112511.GA4574@lst.de> <008c981e-bdd2-21a7-f5f7-c57e4850ae9a@xenosoft.de> <20190103073622.GA24323@lst.de> <71A251A5-FA06-4019-B324-7AED32F7B714@xenosoft.de> <1b0c5c21-2761-d3a3-651b-3687bb6ae694@xenosoft.de> <3504ee70-02de-049e-6402-2d530bf55a84@xenosoft.de> Message-ID: <46025f1b-db20-ac23-7dcd-10bc43bbb6ee@xenosoft.de> Date: Tue, 5 Nov 2019 08:56:27 +0100 MIME-Version: 1.0 In-Reply-To: <3504ee70-02de-049e-6402-2d530bf55a84@xenosoft.de> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: de-DE Sender: linux-arch-owner@vger.kernel.org List-ID: To: Christoph Hellwig , linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org, Olof Johansson Message-ID: <20191105075627.sAkwWP6atAjw3dqnAUHt_2Eb9IreAg1MiwAwE9RAmCk@z> Hi All, We still have DMA problems with some PCI devices. Since the PowerPC updates 4.21-1 [1] we need to decrease the RAM to 3500MB (mem=3500M) if we want to work with our PCI devices. The FSL P5020 and P5040 have these problems currently. Error message: [   25.654852] bttv 1000:04:05.0: overflow 0x00000000fe077000+4096 of DMA mask ffffffff bus mask df000000 All 5.x Linux kernels can't initialize a SCSI PCI card anymore so booting of a Linux userland isn't possible. PLEASE check the DMA changes in the PowerPC updates 4.21-1 [1]. The kernel 4.20 works with all PCI devices without limitation of RAM. We created a bug report a month ago. [2] Thanks, Christian [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8d6973327ee84c2f40dd9efd8928d4a1186c96e2 [2] https://bugzilla.kernel.org/show_bug.cgi?id=205201