[dm-devel] AMD-Vi IO_PAGE_FAULTs and ata3.00: failed command: READ FPDMA QUEUED errors since Linux 4.0

[Mikulas Patocka]

On Fri, 9 Oct 2015, Andreas Hartmann wrote:

> Hello Jörg,
> 
> On 10/09/2015 at 04:59 PM, Joerg Roedel wrote:
> > On Fri, Oct 09, 2015 at 11:15:05AM +0200, Andreas Hartmann wrote:
> >> v4.3-rc4 isn't usable at all for me as long as is hangs the machine on
> >> the necessary PCI passthrough for VMs (I need them).
> > 
> > If the fix I just sent you works, could you please test this again with
> > a (patched) v4.3-rc4 kernel?
> 
> Your IOMMU-patch works fine - but the ata-problem can be seen here, too.
> Same behavior as with 4.1.10.

Could you try another ata disk? (copy the whole filesystem to it and run 
the same test)

It may be bug in disk's firmware.

Mikulas