Hello, On Sat, Oct 29, 2016 at 11:40:29PM -0400, Andrew Ryder wrote: > I have some disks attached to a "Silicon Image, Inc. SiI 3124 PCI-X Serial > ATA Controller" and it repeatedly locks up the system with the message > whenever there is heavy disk i/o. The system the controller is attached to > is a via EPIA-M910 board. > > sata_sil24: 0000:06:03.0: swiotlb buffer is full: 65536 bytes) > DMA: Out of SW-IOMMU space for 65536 bytes at device .." > sata_sil24 0000:06:03.0: swiotlb buffer is full (sz: 65536 bytes .." > > For the past week I have been running with two additional boot parameters > (iommu=allowdac swiotlb=131072) which seem to have solved the issue, but I > was curious if this is a driver bug or not?
(cc'ing swiotbl maintainer, hi!) That looks like iotlb area running out. I don't think there's much to be done from driver side and we've traditionally been pretty bad at handling iotlb errors. Konrad, do you have any ideas? Thanks. -- tejun
