Re: [libvirt] [PATCH] qemu: Fix race between device rebind and kvm cleanup

On Fri, Jan 22, 2010 at 11:40:38AM -0500, Chris Lalancette wrote: > Certain hypervisors (like qemu/kvm) map the PCI bar(s) on > the host when doing device passthrough. This can lead to a race > condition where the hypervisor is still cleaning up the device while > libvirt is trying to re-attach it to the host device driver. To avoid > this situation, we look through /proc/iomem, and if the hypervisor is > still holding onto the bar (denoted by the string in the matcher variable), > then we can wait around a bit for that to clear up. > > v2: Thanks to review by DV, make sure we wait the full timeout per-device >

ACK,