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Virtualizing Graphics Architecture of Android Mobile Platforms in KVM/ARM Environment

Sejin PARK, Byungsu PARK, Unsung LEE, Chanik PARK

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Summary :

With the availability of virtualization extension in mobile processors, e.g. ARM Cortex A-15, multiple virtual execution domains are efficiently supported in a mobile platform. Each execution domain requires high-performance graphics services for full-featured user interfaces such as smooth scrolling, background image blurring, and 3D images. However, graphics service is hard to be virtualized because multiple service components (e.g. ION and Fence) are involved. Moreover, the complexity of Graphical Processing Unit (GPU) device driver also makes harder virtualizing graphics service. In this paper, we propose a technique to virtualize the graphics architecture of Android mobile platform in KVM/ARM environment. The Android graphics architecture relies on underlying Linux kernel services such as the frame buffer memory allocator ION, the buffer synchronization service Fence, GPU device driver, and the display synchronization service VSync. These kernel services are provided as device files in Linux kernel. Our approach is to para-virtualize these device files based on a split device driver model. A major challenge is to translate guest-view of information into host-view of information, e.g. memory address translation, file descriptor management, and GPU Memory Management Unit (MMU) manipulation. The experimental results show that the proposed graphics virtualization technique achieved almost 84%-100% performance of native applications.

Publication
IEICE TRANSACTIONS on Information Vol.E100-D No.7 pp.1403-1415
Publication Date
2017/07/01
Publicized
2017/04/18
Online ISSN
1745-1361
DOI
10.1587/transinf.2016EDP7435
Type of Manuscript
PAPER
Category
Software System

Authors

Sejin PARK
  POSTECH
Byungsu PARK
  POSTECH
Unsung LEE
  POSTECH
Chanik PARK
  POSTECH

Keyword