Apr 302013

Sorry for the delay in this post. I could not get to this post in time and wanted to be sure it is well-researched. The final post in this series is a comparison of the hardware support in the ARM and x86 world. As mentioned in the previous post the biggest reason for ARM to include virtualization in their architecture is to be viable in the server market against x86. So I think a comparison of x86 and ARM hardware support for virtualization is warranted.

Continue reading “ARM Virtualization – ARM vs x86 (Part 5)” »

Apr 082013

In the last few posts we discussed the hardware support needed to provide virtualization. In this post how virtualization can empower the user. We’ll discuss the use cases we already see in the server and desktop space, and mobile specific applications like big.LITTLE and lowering production costs for handsets.

Continue reading “ARM Virtualization – Applications (Part 4)” »

Apr 012013

In the second part of the series we introduced memory management and interrupt handling support provided by virtualization hardware extensions. But effective virtualization solutions need to reach beyond the core to communicate with peripheral devices. In this post we discuss the various techniques used for virtualizing I/O, the problems faced, and the hardware solutions to mitigate these problems.

Continue reading “ARM Virtualization – I/O Virtualization (Part 3)” »

Mar 242013

In the first part of this series, I introduced the topic of virtualization. Today I will venture deeper into the ARM virtualization extensions for memory management and handling of interrupts. Within the core, virtualization mostly provides controls over the system registers. But as we move further from the core, and start to communicate with the outside world, difficulties and nuances in the problem start to emerge and the need for hardware support for virtualization becomes apparent.

Continue reading “ARM Virtualization Extensions – Memory and Interrupts (Part 2)” »