Hi Jörg,

I attached the dmesg output of the boot seuqence. This time after
reboot, the amount of IO_PAGE_FAULTs is not that much, but now, I got a
few ata3.00 errors.


Am 21.07.2015 um 17:56 schrieb Joerg Roedel:
> Hi Andreas,
> 
> On Tue, Jul 21, 2015 at 09:34:46AM -0600, Alex Williamson wrote:
>>> Since Linux 4.1, I'm getting a lot of IO_PAGE_FAULT like this one

To be more precise: The last kernel w/o this problem is 3.18.x - I never
used 3.19 or 4.0.

[...]

> These addresses are not returned from the address allocator of the AMD
> IOMMU driver. Hard to tell what went wrong here, can you probably get a
> complete boot-log (dmesg output after boot) and send it to me?
> 
> Please also boot with amd_iommu_dump on the kernel command line.


Thanks,
Andreas