Messages in this thread | | | Date | Thu, 15 Jun 2017 14:15:45 -0500 | From | Bjorn Helgaas <> | Subject | Re: [PATCH v2] PCI: Add ATS-disable quirk for AMD Stoney GPUs |
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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It was marked "superseded" in patchwork and thus off my radar.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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