From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751910AbbIZISj (ORCPT ); Sat, 26 Sep 2015 04:18:39 -0400 Received: from h1446028.stratoserver.net ([85.214.92.142]:49746 "EHLO mail.ahsoftware.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751801AbbIZISf (ORCPT ); Sat, 26 Sep 2015 04:18:35 -0400 Subject: Re: AMD-IOMMU and problem with __init(data)? To: Joerg Roedel References: <56027D60.3070903@ahsoftware.de> <20150923114358.GA3036@8bytes.org> <5602CA2B.5000106@ahsoftware.de> <5602F7BF.4020009@ahsoftware.de> Cc: linux-kernel@vger.kernel.org From: Alexander Holler Message-ID: <560654D0.7040202@ahsoftware.de> Date: Sat, 26 Sep 2015 10:18:24 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 MIME-Version: 1.0 In-Reply-To: <5602F7BF.4020009@ahsoftware.de> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am 23.09.2015 um 21:04 schrieb Alexander Holler: > Am 23.09.2015 um 17:50 schrieb Alexander Holler: >> Am 23.09.2015 um 13:43 schrieb Joerg Roedel: >>>> If it's necessary, I could try put together a small patch which >>>> kills a system (reproducible here). >>> >>> That would help too, please also send me your .config and I'll try to >>> reproduce the issue here. >> >> Will do. Later. > > Done. Patch(es) and config attached. Note, while reducing the patch, > I've noted that when I change Just in case of, the command line I'm using is ro root=/dev/sdb2 rootfstype=btrfs rootflags=compress=zlib enforcing=0 selinux=0 cgroup_disable=memory swapaccount=0 earlycon=uart8250,io,0x3f8,115200n8 console=ttyS0,115200n8 console=tty0 memtest=3 LANG=de_DE.UTF-8 video=DVI-D-1:1920x1080-32@60 And memtest never failed (I'm always using that). So it's unlikely it's a problem with the memory. But usually I don't have enabled the serial, that means normally I'm booting with root=/dev/sdb2 rootfstype=btrfs rootflags=compress=zlib enforcing=0 selinux=0 cgroup_disable=memory swapaccount=0 console=tty0 memtest=3 LANG=de_DE.UTF-8 video=DVI-D-1:1920x1080-32@60 so maybe enabling the serial does something bad. Also I've enabled it before and haven't seen something bad. And because I assume the IOMMU is the problem, I don't use any cards, just the HW on mb. Regards, Alexander Holler