From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
Subject: Re: [dm-devel] AMD-Vi IO_PAGE_FAULTs and ata3.00: failed command:
	READ FPDMA QUEUED errors since Linux 4.0
Date: Tue, 29 Sep 2015 17:21:01 +0200
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To: Andreas Hartmann <andihartmann-KuiJ5kEpwI6ELgA04lAiVw@public.gmane.org>
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On Sun, Sep 20, 2015 at 08:50:40AM +0200, Andreas Hartmann wrote:
> > I would submit this bug to maintainers of AMD-Vi. They understand the 
> > hardware, so they should tell why do large I/O requests result in 
> > IO_PAGE_FAULTs.
> > 
> > It is probably bug either in AMD-Vi driver or in hardware.
> 
> Until now, I didn't hear anything from the maintainers of AMD-Vi.

What do you mean by this? I've been commenting on this issue in the
past and I thought we agreed that this is no issue of the IOMMU driver.

It it were, bisection should lead to a commit that breaks it, but there
are no commits between v3.18 and v3.19 in the AMD IOMMU driver touching
the DMA-API path.


	Joerg