| VIOMB(4) | Device Drivers Manual | VIOMB(4) |
viomb —
virtio* at pci? dev ? function ?
viomb* at virtio?
viomb driver supports the
virtio-compliant memory ballooning device.
Memory ballooning works as follows:
viomb driver requests allocation of that
amount of physical memory from the NetBSD memory
management system.viomb device tells the hypervisor the guest
physical memory address of the allocated memory via VirtIO memory
ballooning device.The sysctl node hw.viomb.npages shows the
requested number of memory pages to return to the hypervisor, while
hw.viomb.actual shows the actual number of memory
pages that are already returned to the hypervisor.
Rusty Russell, IBM Corporation, Virtio PCI Card Specification, http://ozlabs.org/~rusty/virtio-spec/.
viomb device driver appeared in
NetBSD 6.0.
| November 26, 2011 | NetBSD 9.1 |