Features Coming Up For Xen 4.2 Virtualization
Written by Michael Larabel in Virtualization on 14 August 2012 at 07:04 AM EDT. 5 Comments
Xen 4.2 will be released in the near future for this one of the leading virtualization platforms available for Linux. Xen 4.2 is packing in a number of new features.

Among the features coming to Xen 4.2 include support for Intel's Supervisor Mode Execution Protection (security improvement), allowing up to 256 host CPUs for a 64-bit hypervisor, supporting up to 5TB of host memory for the 64-bit hypervisor, multiple PCI segment support, PCI pass-through support for Linux guests, AMD SVM DecodeAssist support, Remus memory image compression, EFI boot support for 64-bit hypervisor hosts, XL tool-stack improvements leading to deprecating XEND, documentation improvements, and APEI support.

Xen 4.2 also drops the IA64 port, supports building with LLVM's Clang compiler, Xentrace improvements, and bug-fixing all-around. The Linux guest support for PCI pass-through is nice in particular for Xen 4.2 as it leads to some interesting possibilities; Phoronix benchmarks will be conducted soon. Overall though Xen 4.2 is looking like it's shaping up to be a nice release.

Right now there's weekly release candidates of Xen 4.2 being put out until the final release is ready in the very near future.

More of the Xen 4.2 features are detailed on the Xen Wiki. The release plan was mentioned on the Xen blog.
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Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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