Re: IOMMU Page faults when running DMA transfers from PCIe device

2019-04-17 Thread Patrick Brunner
Am Dienstag, 16. April 2019, 17:33:07 CEST schrieb Jerome Glisse: > On Mon, Apr 15, 2019 at 06:04:11PM +0200, Patrick Brunner wrote: > > Dear all, > > > > I'm encountering very nasty problems regarding DMA transfers from an > > external PCIe device to the main m

IOMMU Page faults when running DMA transfers from PCIe device

2019-04-15 Thread Patrick Brunner
Dear all, I'm encountering very nasty problems regarding DMA transfers from an external PCIe device to the main memory while the IOMMU is enabled, and I'm running out of ideas. I'm not even sure, whether it's a kernel issue or not. But I would highly appreciate any hints from experienced develo