Return-path: Received: from 8bytes.org ([81.169.241.247]:58942 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751100AbaILQRz (ORCPT ); Fri, 12 Sep 2014 12:17:55 -0400 Date: Fri, 12 Sep 2014 18:17:52 +0200 From: Joerg Roedel To: Jason Newton Cc: Alex Williamson , iommu , linux-wireless@vger.kernel.org Subject: Re: ath9k and AMD IOMMU alias breakage on 3.16? Message-ID: <20140912161752.GV28786@8bytes.org> (sfid-20140912_181802_393136_666B1C00) References: <1409976104.2982.56.camel@ul30vt.home> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: Sender: linux-wireless-owner@vger.kernel.org List-ID: Hi Jason, On Fri, Sep 05, 2014 at 10:28:01PM -0700, Jason Newton wrote: > [ 0.021820] AMD-Vi: device: 00:00.2 cap: 0040 seg: 0 flags: b8 info 0000 > [ 0.021827] AMD-Vi: mmio-addr: 00000000feb80000 > [ 0.021844] AMD-Vi: DEV_SELECT_RANGE_START devid: 00:01.0 flags: 00 > [ 0.021848] AMD-Vi: DEV_RANGE_END devid: ff:1f.6 > [ 0.022730] AMD-Vi: DEV_ALIAS_RANGE devid: 02:00.0 flags: 00 devid_to: 00:14.4 > [ 0.022735] AMD-Vi: DEV_RANGE_END devid: 02:1f.7 > [ 0.022745] AMD-Vi: DEV_SPECIAL(HPET[0]) devid: 00:14.0 > [ 0.022749] AMD-Vi: DEV_SPECIAL(IOAPIC[5]) devid: 00:14.0 > [ 0.022753] AMD-Vi: DEV_SPECIAL(IOAPIC[6]) devid: 00:00.0 It is just a test, as I don't know how the hardware is actually wired in your system, but can you try to boot with 'ivrs_ioapic[6]=00:00.1' on the kernel command line and report if it makes any difference? Thanks, Joerg