Re: Reset problem vs. MMIO emulation, hypercalls, etc...

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

On Wed, 2012-08-08 at 11:52 +0300, Avi Kivity wrote:
> > So for now I'm just doing my own version of CREATE_IRQCHIP to create it
> > and KVM_INTERRUPT to trigger the various interrupts. None of the mapping
> > stuff (which we really don't need).
> 
> You mean KVM_IRQ_LINE.  KVM_INTERRUPT is a synchronous vcpu ioctl.

Yes, sorry, brain and fingers not agreeing :-)

> > That's a bit of a problem vs. some of the code qemu-side such as in
> > virtio-pci which does seem to be written around the model exposed by the
> > x86 stuff and relies on doing such mappings so I think we'll have to
> > butcher some of that.
> 
> Can you elaborate? virtio-pci is pci-centric, there should be nothing
> x86 specific there.

The kvm_irqchip_add_msi_route & co is a problem, it more/less dives into
the x86/ia64 specific routing stuff at a generic level, I'll have to
hook things up differently in qemu I suspect.

Not a huge deal, we can sort it out.

Cheers,
Ben.