[RFC v2 0/6] IRQ bypass manager and irqfd consumer

Joerg Roedel joro at 8bytes.org
Thu Jul 9 08:34:58 PDT 2015

On Thu, Jul 09, 2015 at 04:38:41PM +0200, Paolo Bonzini wrote:
> >> On Tue, Jul 07, 2015 at 11:17:48AM -0600, Alex Williamson wrote:
> > If we think that it's *only* a kvm-vfio interaction then we could add it
> > to virt/kvm/vfio.c.  vfio could use symbol_get to avoid a module
> > dependency and effectively disable the code path when not used with kvm.
> > The reverse model of hosting it in vfio and using symbol_get from
> > kvm-vfio would also work.  Do we really want to declare it to be
> > kvm-vfio specific though?  Another option would be to simply host it
> > under virt/lib with module dependencies for both vfio and kvm.
> I wonder if in the future we may have some kind of driver-mediated
> passthrough, e.g. for network drivers.  They might use the bypass
> mechanism too.  So I think drivers/vfio is too restrictive.
> virt/ right now only hosts KVM, but it could for example host lguest
> too.  virt/lib/ is okay with me.

Yeah, virt/lib is probably the best choice.


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