Alex Williamson wrote: > TUNSETTXFITLER has only existed since 2.6.26, so the ioctl will fail on > anything older and it will be disabled anyway. The patch will fix .29 > and should get rolled into .28 stable, so we're looking at an exposure > of 2 kernel releases. Unfortunately a few community distros went out on > those kernels, so perhaps the prudent approach would be to make the > default disabled until we're a few releases beyond. I don't know any > way you could detect it outside of ugly parsing of uname -r. Thanks, I would parse uname -r - it's not hard, Linux versions have always matched %d.%d.%d, and map in a standard way to a 32-bit integer for easy comparisons. A few QEMU releases later, someone will run the new version on a 2.6.26 to 2.6.28 host. It's quite usual in my experience to run a QEMU that's much newer than the corresponding host kernel, because upgrading host is a big deal (if you only have one or two) due to being heavily used, whereas upgrading QEMU/KVM is much easier as you can do it one VM guest at a time. -- Jamie -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
