Hvm Domu
Xen hvm domu v4 2 1 xen hvm domu v4 1 4 xen hvm domu 4 1 5 xen hvm domu v4 3 0.
Hvm domu. Benchmark results for a xen hvm domu with an intel cc150 processor. In this mode it makes use of hardware virtualization technology like vt x and emulation of hardware devices to virtualize non paravirtualized guests such as windows. Builder hvm is required to specify to xen that a hvm domu is to be created as opposed to the default pv type domu memory 4000 sets the domu s allocated memory as 4000mb vcpus 1 sets the domu s allocated cpus as 1 name freepbx sets the domu s domain name in the xen environment as freepbx. One major work item in progress is pvhv2 dom0 and domu and splitting the pv and hvm code paths to enable building a hvm and pvhv2 only hypervisor.
Paravirtual guests traditionally performed better with storage and network operations than hvm guests because they could leverage special drivers for i o that avoided the overhead of emulating network and disk hardware whereas hvm guests had to translate these instructions to emulated hardware. Pv on hvm is a new type of xen project hypervisor guest support that exploits hardware nested paging while enabling pv interfaces for io. Check out the product website. Pv is the regular domu support that has been present in most linux distributions for years and it is required to run on amazon ec2 for example.
A xen hvm domain is hardware emulated domain that means the operating system could be linux windows whatever has not been modified in any way and hardware gets emulated.