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    SubjectRe: [PATCH v2] PCI: Add ATS-disable quirk for AMD Stoney GPUs
    On Thu, Jun 15, 2017 at 04:04:21PM +0200, Joerg Roedel wrote:
    > Hi Bjorn,
    >
    > On Fri, Apr 07, 2017 at 04:32:18PM +0200, Joerg Roedel wrote:
    > > From: Joerg Roedel <jroedel@suse.de>
    > >
    > > ATS is broken on this hardware and causes IOMMU stalls and
    > > system failure. Disable ATS on these devices to make them
    > > usable again with IOMMU enabled.
    > >
    > > Note that the commit in the Fixes-tag is not buggy, it
    > > just uncovers the problem in the hardware by increasing
    > > the ATS-flush rate.
    > >
    > > Fixes: b1516a14657a ('iommu/amd: Implement flush queue')
    > > Signed-off-by: Joerg Roedel <jroedel@suse.de>
    > > ---
    > > drivers/pci/quirks.c | 19 +++++++++++++++++++
    > > 1 file changed, 19 insertions(+)
    >
    > Any more objections on this patch? Please let me know if you want to
    > have something changed.

    It was marked "superseded" in patchwork and thus off my radar. I
    don't remember if I did that or why. I changed it back to "New" so I
    won't forget about it.

    You mention (May 24) the original bug report. Can you include the URL
    for that?

    I admit I just don't have warm fuzzies that the problem is well
    understood.

    Bjorn

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