ARM Ports Linux KVM To AArch64/ARM64
Written by Michael Larabel in Hardware on 5 March 2013 at 10:08 AM EST. Add A Comment
Last year ARM Holdings published ARM KVM virtualization support. This support was for ARMv7 hardware using the ARM Cortex-A15 since it's the first 32-bit ARM processor to support hardware virtualization. Ahead of the debut of any 64-bit ARM (AArch64) hardware, KVM has now been ported to ARM64.

On Monday evening the set of 29 patches to port the Kernel-based Virtual Machine to ARM were posted by Marc Zyngier of ARM. "This series contains the implementation of KVM for arm64. It depends on the 'pre-arm64 rework' series I posted earlier, as well as on the tiny perf patch sent just after. The code is unsurprisingly extremely similar to the KVM/arm code, and a lot of it is actually shared with the 32bit version."

This AArch64 KVM support enablement includes support for 4k and 64k pages, 32-bit and 64-bit guests, and PSCI support for SMP booting. However, they don't yet have ARM 64-bit QEMU support, so for now the ARM64 KVM virtualization testing was done through KVM Tool.

The 64-bit ARM KVM virtualization patches can currently be found on the KVM mailing list and will be a likely candidate to be merged into the Linux 3.10 kernel in the coming months.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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