Re: [Qemu-devel] intel_iommu migration compatibiltiy for scalable mode emulation

2019-03-28 Thread Peter Xu
On Wed, Mar 27, 2019 at 06:17:08PM -0400, Michael S. Tsirkin wrote: > On Wed, Mar 27, 2019 at 08:02:24PM +, Dr. David Alan Gilbert wrote: > > (Oops, originally forgot to cc the list) > > > > * Dr. David Alan Gilbert (dgilb...@redhat.com) wrote: > > > Hi, > > > Commit fb43cf739 introduced a

Re: [Qemu-devel] intel_iommu migration compatibiltiy for scalable mode emulation

2019-03-27 Thread Michael S. Tsirkin
On Wed, Mar 27, 2019 at 08:02:24PM +, Dr. David Alan Gilbert wrote: > (Oops, originally forgot to cc the list) > > * Dr. David Alan Gilbert (dgilb...@redhat.com) wrote: > > Hi, > > Commit fb43cf739 introduced a new iommu migration field called > > 'root_scalable' - but it doesn't do any

Re: [Qemu-devel] intel_iommu migration compatibiltiy for scalable mode emulation

2019-03-27 Thread Dr. David Alan Gilbert
(Oops, originally forgot to cc the list) * Dr. David Alan Gilbert (dgilb...@redhat.com) wrote: > Hi, > Commit fb43cf739 introduced a new iommu migration field called > 'root_scalable' - but it doesn't do any machine type checks, which means > it breaks migration between 3.1<->4.0 - we should