On Thu, Feb 23, 2017 at 10:02:48AM +0100, Michal Privoznik wrote: > So, majority of the code is just ready as-is. Well, with one > slight change: differentiate between dimm and nvdimm in places > like device alias generation, generating the command line and so > on. > > Speaking of the command line, we also need to append 'nvdimm=on' > to the '-machine' argument so that the nvdimm feature is > advertised in the ACPI tables properly. > > Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx> > + if (prealloc && > + virJSONValueObjectAdd(props, > + "b:prealloc", true, > + NULL) < 0) > + goto cleanup; As discussed on IRC, using prealloc with QEMU causes it to memset() the first byte of every page of memory to 0. With NVDIMM this is obviously corrupting application data stored in the NVDIMM. Obviously this needs fixing in QEMU, but I would think that libvirt needs to block use of prealloc==true when running against existing broken QEMU versions, otherwise users are going to be rather upset to see their data corrupted on every boot Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://entangle-photo.org -o- http://search.cpan.org/~danberr/ :| -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list
