From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout3.freenet.de ([195.4.92.93]:39574 "EHLO mout3.freenet.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751459AbbG1T2W (ORCPT ); Tue, 28 Jul 2015 15:28:22 -0400 Subject: Re: AMD-Vi IO_PAGE_FAULTs and ata3.00: failed command: READ FPDMA QUEUED errors since Linux 4.0 To: Mike Snitzer References: <55B7BEA2.30205@01019freenet.de> <20150728175054.GB24782@redhat.com> <55B7C800.2070702@maya.org> <20150728185811.GA25060@redhat.com> Cc: dm-devel@redhat.com, mpatocka@redhat.com, linux-pci From: Andreas Hartmann Message-ID: <55B7D6BE.5010203@maya.org> Date: Tue, 28 Jul 2015 21:23:42 +0200 MIME-Version: 1.0 In-Reply-To: <20150728185811.GA25060@redhat.com> Content-Type: text/plain; charset=windows-1252 Sender: linux-pci-owner@vger.kernel.org List-ID: On 07/28/2015 at 08:58 PM, Mike Snitzer wrote: > On Tue, Jul 28 2015 at 2:20pm -0400, > Andreas Hartmann wrote: > >> On 07/28/2015 at 07:50 PM, Mike Snitzer wrote: >> [..] >>> Are your SATA devcies using NCQ? >> >> Yes. It's enabled: >> >> dmesg| grep -i ncq >> ahci 0000:00:11.0: flags: 64bit ncq sntf ilck pm led clo pmp pio slum part >> ata2.00: 5860533168 sectors, multi 0: LBA48 NCQ (depth 31/32), AA >> ata3.00: 5860533168 sectors, multi 0: LBA48 NCQ (depth 31/32), AA >> ata1.00: 468862128 sectors, multi 16: LBA48 NCQ (depth 31/32), AA >> >> As the errors already come up on boot (during mount of partitions or >> even before the password for the disk has been provided): How can I >> disable NCQ during boot of the kernel? Is there a kernel option? > > See: > https://ata.wiki.kernel.org/index.php/Libata_FAQ#Enabling.2C_disabling_and_checking_NCQ > > alternatively, and likely easier, set this on the kernel commandline: > libata.force=noncq ata2.00: FORCE: horkage modified (noncq) ata2.00: 5860533168 sectors, multi 0: LBA48 NCQ (not used) ata3.00: FORCE: horkage modified (noncq) ata3.00: 5860533168 sectors, multi 0: LBA48 NCQ (not used) ata5.00: FORCE: horkage modified (noncq) ata1.00: FORCE: horkage modified (noncq) ata1.00: 468862128 sectors, multi 16: LBA48 NCQ (not used) Perfectly. Seems to work w/ 3.19.8 and your mentioned patches. But now, I'm getting another error, which I didn't see before w/ 3.x-kernels: [drm:btc_dpm_set_power_state [radeon]] *ERROR* rv770_restrict_performance_levels_before_switch failed It seams that your patches do have some unwanted side effects :-). Could you please reexamine your patch "dm crypt: don't allocate pages for a partial request" - after applying this patch all the problems are coming up here. Thanks, regards, Andreas