Re: [Qemu-devel] [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC

[Michael S. Tsirkin]

On Thu, Oct 22, 2015 at 07:01:01AM -0600, Alex Williamson wrote:
> On Thu, 2015-10-22 at 15:32 +0300, Michael S. Tsirkin wrote:
> > On Wed, Oct 21, 2015 at 01:20:27PM -0600, Alex Williamson wrote:
> > > The trouble here is that the VF needs to be unplugged prior to the start
> > > of migration because we can't do effective dirty page tracking while the
> > > device is connected and doing DMA.
> > 
> > That's exactly what patch 12/12 is trying to accomplish.
> > 
> > I do see some problems with it, but I also suggested some solutions.
> 
> I was replying to:
> 
> > So... what would you expect service down wise for the following
> > solution which is zero touch and I think should work for any VF
> > driver:
> 
> And then later note:
> 
> "Here it's done via an enlightened guest driver."

Oh, I misunderstood your intent. Sorry about that.

So we are actually in agreement between us then. That's nice.

-- 
MST