Re: [Qemu-devel] [PATCH] Inter-VM shared memory PCI device

[Paul Brook]

> Support an inter-vm shared memory device that maps a shared-memory object
> as a PCI device in the guest.  This patch also supports interrupts between
> guest by communicating over a unix domain socket.  This patch applies to
>  the qemu-kvm repository.

No. All new devices should be fully qdev based.

I suspect you've also ignored a load of coherency issues, especially when not 
using KVM. As soon as you have shared memory in more than one host 
thread/process you have to worry about memory barriers.

Paul