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QEMU 2.0 发布,开源系统模拟器

[日期:2014-04-18] 来源:oschina.net  作者:Linux [字体: ]

QEMU 2.0 发布了,下载地址: http://wiki.qemu.org/download/qemu-2.0.0.tar.bz2

QEMU是一套由Fabrice Bellard所编写的模拟处理器的自由软件。它与Bochs,PearPC近似,但其具有某些后两者所不具备的特性,如高速度及跨平台的特性。经由kqemu这个开源的加速器,QEMU能模拟至接近真实电脑的速度。QEMU有两种主要运作模倾:

  • User mode模拟模式,亦即是使用者模式。QEMU 能启动那些为不同中央处理器编译的Linux程序。而Wine及 Dosemu是其主要目标。

  • System mode模拟模式,亦即是系统模式。QEMU能模拟整个电脑系统,包括中央处理器及其他周边设备。它使得为系统源代码进行测试及除错工作变得容易。其亦能用来在一部主机上虚拟数部不同虚拟电脑。

相关阅读:

Ubuntu 12.04之找不到Qemu命令 http://www.linuxidc.com/Linux/2012-11/73419.htm

Arch Linux上安装QEMU+EFI BIOS http://www.linuxidc.com/Linux/2013-02/79560.htm

QEMU的翻译框架及调试工具 http://www.linuxidc.com/Linux/2012-09/71211.htm

值得关注的改进有:

 * Initial support for KVM on AArch64 systems (some features such as migration
   are not yet implemented)
 * Support for all 64-bit mode ARMV8 user-accessible instructions except for
   the optional CRC and crypto extensions
 * Support for new 32-bit mode ARMv8 instructions in TCG
 * Support for the allwinner-a10-based board "-M cubieboard"
 * Support for POWER Altivec 2.07 and VSX instructions when running under TCG
 * Support for boot order in pSeries emulation
 * The Q35 x86 machine-type now supports CPU hotplug.
 * On the PIIX x86 machine-type, PCI hotplug now supports devices behind a
   bridge (for bridges not added by hotplug; hot-plugged bridges can still use
   the PCI Standard Hot-Plug Controller)
 * Support for the Hyper-V reference time counter via the "hv-time" suboption
   of "-cpu". This can improve performance of Windows guests substantially for
   applications that do many floating-point or SIMD operations. (Requires KVM
   and Linux 3.14).
 * ACPI tables generated by QEMU can now be used by OVMF
   (https://wiki.ubuntu.com/UEFI/OVMF) firmware. OVMF starting with SVN r15420
   is needed. In particular hotplug, pvpanic device and other ACPI based
   features now work for OVMF
 * PCI passthrough of devices with a ROM now work on Xen
 * support for suspend-to-RAM in the XHCI USB controller
 * GTK UI is now supported on Windows hosts
 * New management interfaces for CPU and virtio-rng hotplug
 * Improved reliability for live migration when using qcow2 images
 * Live snapshot merging
 * Experimental support in virtio-blk for M:N threading model: if you specify
   x-dataplane=on, you can also create I/O threads with "-object iothread" and
   point virtio-blk devices to the desired iothread with the "x-iothread"
   property. Properties of the running iothreads can be queried with the QMP
   command "query-iothreads".
 * Network block drivers (curl, iscsi, rbd, ssh, glusterfs) can be built as
   shared library modules with "--enable-modules" configure option.
 * QEMU is now able to operate even if the underlying storage requires the
   buffer size to be a 4K multiple. This is the case for 4K-native disks (with
   cache=none or when accessed through iscsi:// URLs) and some raw devices
 * QEMU can access NFSv3 shares directly from userspace using libnfs.
 * Improvements to the TCG optimizer make it produce faster code
 * Tracing QEMU via LTTng 2.x is now supported

完整记录请看:http://wiki.qemu.org/ChangeLog/2.0

QEMU 的详细介绍请点这里
QEMU 的下载地址请点这里

linux
相关资讯       qemu 
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