I'm experimenting with Gerd's excellent work on integrating Xenner into Qemu (http://git.et.redhat.com/?p=qemu-kraxel.git). I'm using it to boot a FreeBSD guest that uses the Xen paravirtual network drivers. Decoupling the Xen PV guest support from the hypervisor really simplifies deployment. The current implementation doesn't yet support KVM, as KVM has to handle a Xen-specific MSR in order to map hypercall pages into the guest physical address space. A recent thread on this list discussed the issue but didn't come to a resolution. Does it make sense to implement a generic mechanism for handling MSRs in userspace? I imagine a mechanism analogous to PIO, adding a KVM_EXIT_MSR code and a msr type in the kvm_run struct. I'm happy to take a stab at implementing this if no one else is already working on it. --Ed -- 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
