On 11/21/2011 09:32 PM, Till Maas wrote: > a recent kernel update[0] broke Fedora's ability to be a VirtualBox > host, because asm/amd_iommu.h was removed. This is a part of the in-kernel API, not the kernel<->userspace interface. The internal API can change at any time. External kernel modules can break whenever the kernel is updated for the smallest bugfix. http://lxr.linux.no/#linux+v3.1.2/Documentation/stable_api_nonsense.txt Michal -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel