Hello, I've tried using KVM_REGISTER_COALESCED_MMIO to register a coalesced MMIO zone. ioctl(KVM_CHECK_EXTENSION) for KVM_CAP_COALESCED_MMIO works properly (and returns 2). ioctl(KVM_REGISTER_COALESCED_MMIO) with the zone also works fine (and returns 0). What I see is that we still get KVM_EXIT_MMIO into that zone, and the ring never gets used (first==last==0 at all times). I've went ahead and added some debug output to QEMU, I've noticed that while qemu registers a coalesced MMIO zone for it's VGA driver, kvm_flush_coalesced_mmio_buffer() never has any data to flush in the ring either. Is it a known issue? Or am I simply not doing something right? Thanks! -- Sasha. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
