linux-kernel - Re: AMD-IOMMU and problem with _

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Message-ID: <560654D0.7040202@ahsoftware.de>
Date:	Sat, 26 Sep 2015 10:18:24 +0200
From:	Alexander Holler <holler@...oftware.de>
To:	Joerg Roedel <joro@...tes.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: AMD-IOMMU and problem with __init(data)?

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
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