Hello, Just reporting that it looks like this patch may fix the error (so people having issues with VIA controller hosts may also want to try it): https://lists.linuxfoundation.org/pipermail/iommu/2017-September/024371.html It appears that my ax88179 is working just fine now with the vendor driver. So perhaps it's possible to revert the old commit in the linux kernel and allow the use of scatter gather ? (perhaps for non-intel hosts ? I'm not sure if this device is effected by intel xhci errata) commit: e2ed511400d41e0d136089d5a55ceab57c6a2426 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e2ed511400d41e0d136089d5a55ceab57c6a2426 ethtool -k enp2s0u1u4 Features for enp2s0u1u4: Cannot get device udp-fragmentation-offload settings: Operation not supported rx-checksumming: off [fixed] tx-checksumming: on tx-checksum-ipv4: on tx-checksum-ip-generic: off [fixed] tx-checksum-ipv6: on tx-checksum-fcoe-crc: off [fixed] tx-checksum-sctp: off [fixed] scatter-gather: on tx-scatter-gather: on tx-scatter-gather-fraglist: off [fixed] tcp-segmentation-offload: on tx-tcp-segmentation: on tx-tcp-ecn-segmentation: off [fixed] tx-tcp-mangleid-segmentation: off tx-tcp6-segmentation: off [fixed] udp-fragmentation-offload: off generic-segmentation-offload: on generic-receive-offload: on large-receive-offload: off [fixed] rx-vlan-offload: off [fixed] tx-vlan-offload: off [fixed] ntuple-filters: off [fixed] receive-hashing: off [fixed] highdma: off [fixed] rx-vlan-filter: off [fixed] vlan-challenged: off [fixed] tx-lockless: off [fixed] netns-local: off [fixed] tx-gso-robust: off [fixed] tx-fcoe-segmentation: off [fixed] tx-gre-segmentation: off [fixed] tx-gre-csum-segmentation: off [fixed] tx-ipxip4-segmentation: off [fixed] tx-ipxip6-segmentation: off [fixed] tx-udp_tnl-segmentation: off [fixed] tx-udp_tnl-csum-segmentation: off [fixed] tx-gso-partial: off [fixed] tx-sctp-segmentation: off [fixed] tx-esp-segmentation: off [fixed] fcoe-mtu: off [fixed] tx-nocache-copy: off loopback: off [fixed] rx-fcs: off [fixed] rx-all: off [fixed] tx-vlan-stag-hw-insert: off [fixed] rx-vlan-stag-hw-parse: off [fixed] rx-vlan-stag-filter: off [fixed] l2-fwd-offload: off [fixed] hw-tc-offload: off [fixed] esp-hw-offload: off [fixed] esp-tx-csum-hw-offload: off [fixed] rx-udp_tunnel-port-offload: off [fixed] Regards, Will On Fri, 29 Sep 2017 09:58:07 +1000 Will Trives <renevant@xxxxxxxxxxxxxxxx> wrote: > Hello, > > I just saw a post about VIA controllers triggering IOMMU errors. > > > Just want to also point out that the ax88179 will also trigger PTE > read errors when using the vendor's driver. > > I'm nowhere near an expert but I remember seeing that 'TD fragment' is > supported now or some such, which I take to mean that sg/tso should be > supported with usbnet ? > > I'm unclear on whether it can ever work with intel hosts because of an > errata ? > > Anyway for anyone that wants to see the error you can grab the vendor > driver: > > http://www.asix.com.tw/FrootAttach/driver/AX88179_178A_LINUX_DRIVER_v1.18.0_SOURCE.tar.bz2 > > > This driver was working recently-ish perhaps around the same time the > VIA controllers starting having iommu issues. > > > Regards, > > > Will > > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
