On Mon, Jun 08, 2015 at 05:33:19PM +0200, Paolo Bonzini wrote: > > > On 08/06/2015 17:22, Michael S. Tsirkin wrote: > > On Mon, Jun 08, 2015 at 05:17:31PM +0200, Paolo Bonzini wrote: > >> > >> > >> On 08/06/2015 17:01, Michael S. Tsirkin wrote: > >>> Are there applications that would actually use this? For microsoft this > >>> seems to be mostly driven by ActiveDirectory needs. > >>> It seems quite possible that applications solve the problem > >>> differently on Linux. > >> > >> I'm not aware of a different solution to the problem on Linux. > > > > Adding it by default for everyone still seems too aggressive. > > We had a ton of pain with pvpanic exactly because of a > > similar "can't hurt" approach. > > The ton of pain was due to enabling it in ACPI unconditionally. We can > leave it disabled in the UUID is all zeroes, for example. > > Paolo
Not if libvirt insists on adding a non zero uuid to all VMs unconditionally. This is what I was arguing against really. > > I think a better approach would be to merge the code in qemu, > > merge a linux driver. Once that's available, and some apps use it, > > enabling it by default will seem more reasonable. > >
