Paul Brook wrote:
In any case we need some internal API for this, and qemu_irq looks like
a good choice.
What do you expect to be using this API?
virtio, emulated devices capable of supporting MSI (e1000?), device
assignment (not yet in qemu.git).
It probably makes sense to have common infrastructure in pci.c to
expose/implement device side MSI functionality. However I see no need for a
direct API between the device and the APIC. We already have an API for memory
accesses and MMIO regions. I'm pretty sure a system could implement MSI by
pointing the device at system ram, and having the CPU periodically poll that.
Instead of writing directly, let's abstract it behind a qemu_set_irq().
This is easier for device authors. The default implementation of the
irq callback could write to apic memory, while for kvm we can directly
trigger the interrupt via the kvm APIs.
--
error compiling committee.c: too many arguments to function
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