Sorry, but I have a hard to to imagine what you exactly mean here. Do you mean a possibility for one application in the guest and one in the host to share a piece of memory? Or do you mean that the operating systems in the host and guest should somehow share the memory (why?)? Or do you just look for a possibility to avoid that the guest has a lot of memory allocated to it when it does not need it? In the latter case, there is already virtio-balloon, so you should have a look at the virtio drivers if you need something like this.
** Changed in: qemu Status: New => Incomplete ** Changed in: qemu Importance: Undecided => Wishlist ** Summary changed: - [REQUEST[ SHARING MEMORY WITH HOST + [REQUEST] SHARING MEMORY WITH HOST -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1777293 Title: [REQUEST] SHARING MEMORY WITH HOST Status in QEMU: Incomplete Bug description: Instead of a preallocated memory heap I would like for QEMU to share memory using shm. Example: Instead of using 16gb out of 32gb of ram to run Windows 10, there would be no option to allocate it, but to share the hosts resources; ie giving the host full access to the entire ram stack I'm not a great programmer but I'm pretty sure QEMU's team could find this useful To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1777293/+subscriptions