On Mon, Oct 21, 2019 at 07:04:45AM +0200, Ben wrote: > Thanks, > > I could have sworn I checked lkml. Thanks for the fix! > > Any idea why only ehci is affected? > > Seems a bit odd, that's why I thought it would be a problem with usb driver. > I'm not sure -- in theory at least, it should affect any device that uses DMA and supports at least 32-bit DMA, but not enough to cover all of RAM. On my system that seems to be only ehci and my GPU (which only supports 32-bit coherent DMA, apparently), going by dmesg. Note that a workaround is to disable iommu=pt, it's not a problem unless you're trying to use passthrough with that device.
