Re: [RFC 7/7] migration: call qemu_savevm_state_pending_exact() with the guest stopped

[Jason Gunthorpe]

On Thu, Oct 13, 2022 at 01:25:10PM +0100, Joao Martins wrote:

> It would allow supporting both the (current UAPI) case where you need to
> transfer the state to get device state size (so checking against 
> threshold_size
> pending_pre constantly would allow to not violate the SLA) as well as any 
> other
> UAPI improvement to fseek()/data_size that lets you fail even earlier.

We should not get fixated on missing part of the current kernel
support, if we need a new query or something to make qemu happy then
we will add it. We don't need to worry about supporting the kernel-with-no-query
case in qemu.

Jason