![]() ![]() Since I dual-boot regularly between Windows 7 and Linux on several of my machines, I like to keep all my virtual machine disk images, test programs, and source on common NTFS partitions, which I can then easily access from both Windows 7 and Linux.įor convenience in building both Bochs and QEMU and other open source projects you might enlist in, I suggest also installing the packages " cvs" and " subversion" (which are two other popular source control systems), " xterm" to make sure that X11 graphical subsystem is installed, " bochs" and " qemu" themselves in order to install pre-requisites such as BIOS images and device models, " wine" which allows running some Windows applications directly from Linux, and " bximage" for creating Bochs disk image files. While on Debian, use the similar " apt-get" command:Ī few other packages I find very convenient to install, including " rdesktop" which permits a Linux machine to Remote Desktop into a Windows machine, and the " ntfs-3g" package gives read-write file access to any Windows NTFS partition which may reside on the same machine. On Fedora 12 and 13, use the " yum" command to install packages, such as: To this on Linux, and I have successfully done this on both Fedora 12/13 and Debian 5.05 releases, you will need to make sure that you install the gcc and g ++ packages (which you would have already for building Bochs), the git or git-core package for installing the Git source control system, the make package, and the SDL development package (on Debian you will want libsdk1.2-dev package). More adventurous readers can enlist into QEMU directly. Until there is a significant new point release in the future, I will also continue to use the 0.12.5 release as my reference for future discussions.Īfter recently exchanging a few emails with Yan Wen, the author of WinQEMU, he assures me he is porting version 0.12.4 (hopefully 0.12.5 now) to Windows and will update the WinQEMU release within a month or two. As I have eluded to this summer, I have been following QEMU, enlisting in the sources for what have now been the 0.12.4 and 0.12.5 releases, and have enough improvement to put my work on Bochs on hold for a while in order to evaluate QEMU deeper.Īs fortune would have it, the latest point release of QEMU, version 0.12.5, was released just days ago on the QEMU web sites:įor QEMU novices, I would suggest grabbing these 0.12.5 sources as your starting point. I found WinQEMU 0.10.2 to be measurably faster than the previous 0.9 build I had tried two years earlier. My interest in QEMU was ignited again last summer when I happed across a new Windows port of QEMU called appropriately enough, WinQEMU, hosted at this SourgeForge page: It was too slow (in some cases even slower than the Bochs interpreter) and too buggy. Since I have discussed Virtual PC, PowerPC, ARM, and Bochs recently, let's now take that closer look at QEMU.Īs I mentioned in previous postings, three years ago I first looked at QEMU version 0.9 hosted on Windows and quickly dismissed it as junk. I could not have written a better introductions to this week's discussion on QEMU. Prophetic words! This quotation from a book on virtualization published two years ago eludes to the near future, where someday virtual machines will migrate freely across devices without worry about which chip vendor's hardware is being used. The Definitive Guide to the Xen Hypervisor, David Chisnall, Prentice Hall, 2008 ![]() They are likely to become a significant feature of Xen in the future, however" Currently, virtual-to-emulated (V2E) and emulated-to-virtualized (E2V) migrations using QEMU are still experimental. NET CLR could have the JID cache invalidated and be recompiled from bytecode for the new native platform. Code running in abstract machines such as the JVM or. A virtual machine running on a slow ARM chip in a mobile device could be migrated to a fast desktop or server machine. "Beyond debugging, migration to emulated environments opens the door to cross-platform migration of virtual machines. ![]()
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