Linux Kernel Now Supports OpenRISC, Nested Virtualization - Linux Kernel 3.1 支援在虛擬機器裡面開啟虛擬機器。
Linux has support for nested virtualization within the KVM (Kernel-based Virtual Machine) hypervisor.
This feature, built from AMD's Nested VMX, allows a virtual machine to be run from inside another.
Linux will also provide KVM with the ability to tap into the SMEP (Supervisory Mode Execute Protection)
of Intel's next-generation Ivy Bridge processors, which should reduce some of the performance overhead
typically associated with virtual clients.
Users of the Xen hypervisor get some new features as well: Linux 3.1 will be the first to allow Xen-based
virtual machines to directly access devices on a PCI bus, a capability previously only available through
a patch. It also folds in Xen's Balloon Driver, which can be used to adjust the amount of working memory
used by a virtual machine during operation.
