Re: [Qemu-devel] [V11 3/4] hw/core: provision for overriding emulated IOMMU

[Marcel Apfelbaum]

On 05/24/2016 04:01 PM, Jan Kiszka wrote:
> On 2016-05-24 13:49, Michael S. Tsirkin wrote:
> > On Sun, May 22, 2016 at 01:21:53PM +0300, David Kiarie wrote:
> > > Added an enum, subject to review, to machine properties which
> > > it used to override iommu emulated from Intel to AMD.
> > >
> > > Signed-off-by: David Kiarie <address@hidden>
> >
> > Marcel's
> >   "enable iommu with -device"
> > seems like a better alternative.
>
> If that works for both IOMMUs, it would be preferred. But the last time
> I checked (granted: long ago), there were internal ordering issues
> preventing this.

It will work for both. The reason is we delay the bus_master_region creation
to machine_done.

Thanks,
Marcel

> Bonus of moving IOMMU machine options over: They are getting more and
> more, and many are now very IOMMU-specific (like the CM control for Intel).
>
> Jan