Re: [Qemu-ppc] [RFC PATCH 08/26] ppc/xive: add flags to the XIVE interrupt source

[Benjamin Herrenschmidt]

On Tue, 2017-07-25 at 14:19 +1000, David Gibson wrote:
> > Nevertheless I have added support for the hcall in Linux and QEMU.
> > To use, I think we could create a specific source.
> 
> So, IIUC, it's host constraints that would make this one way or the
> other.  So what happens when a guest migrates from a host which has it
> one way to one which has it the other way?

It's probably ok to always call the hcall for the awy set -> unset, the
other way around is a problem, but it will end up depending on the kind
of interrupts we pass through.

Ben.