It sounds a bit strange, that the sw-iommu is used in first place. IMO this is only necessary for 64bit. I am not using Xen myself so maybe the question is dumb, but anyway: the host is running exactly the same kernel as the guest? Also, have you tried the effect of swiotlb=off?
-- linux-image-2.6.24-* w/ aic79xx crash under heavy I/O load https://bugs.launchpad.net/bugs/238118 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
