On 2011-07-20 16:48, Avi Kivity wrote: > On 07/20/2011 05:45 PM, Jan Kiszka wrote: >>> >>> (that's the whole point - it can be made invisible by something outside >>> the cirrus card's knowledge). >>> >>> Note - with kvm, there is still a race between syncing the bitmap and >>> removing the region. However that is a bug in the kvm API; it is not >>> possible to work around it in qemu. >>> >> >> Dirty log off, reconfigure, dirty log on? > > What happens if there's a write after the first comma (assuming > "reconfigure" == "remove slot")? > > Granted, the guest shouldn't be doing that. > > Hmm, I guess you could just mark the entire range dirty after removing it.
Maybe. So the problem is that the dirty bitmap is lost when we unregister a region with the KVM kernel? Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux
