八年开发的结晶--QEMU 1.0

mofeisi71

模拟处理器的自由软件QEMU正式发布了1.0版。 八年前，Fabrice Bellard启动了QEMU项目，最初设想在非x86平台上运行x86 Linux二进制程序，随后转变成跨架构的全系统模拟器，能在不同主机平台模拟14种不同的目标架构。

包括IA-32(x86) PC、x86-64 PC、MIPS R4000、Sun的SPARC sun4m和SPARC sun4u，ARM和PowerPC等等。它是Xen和KVM虚拟机的核心。

download：http://wiki.qemu.org/download/qemu-1.0.tar.gz

mofeisi71

ChangeLog:

== General ==
* i386-softmmu is no longer named ''qemu'' but instead referred to as ''qemu-system-i386'' for better consistency with other targets. A new tool is likely to be introduced that uses the ''qemu'' name so distributions are advised to not undo this change. * QEMU now uses a separate thread for VCPU execution. This merges the biggest difference between the qemu-kvm tree and upstream QEMU. * A new memory dispatch API has been added internally. A new monitor command "info mtree" can show the hierarchy of memory regions in the guest.
* QEMU now has a build dependency on glib and makes extensive use of glib.
* QEMU now can run on more hosts. Hosts without a native code generator can use the TCG interpreter (TCI). See [[Features/TCI]] for more information.

== Block devices (disks) ==
* QEMU now supports I/O latency accounting in the monitor command "info
blockstats".
* Errors are now tracked per device and are shown by the monitor command "info block". * All image formats now support asynchronous operation. IDE and SCSI emulation will use this feature, while other devices (notably floppy and SD) will not.

=== IDE/ATAPI ===
* A large number of bugs were fixed regarding CD media change and tray locking.

=== SCSI ===
* Memory management errors could crash QEMU when scsi-disk encountered I/O errors. Many instances of this problem were fixed.
* The accuracy of error handling for SCSI emulation has been greatly improved.
* SCSI devices can now be addressed by channel, target (id) and LUN. Not all emulated HBAs will support this feature (in particular, the LSI controller will not). * Block device pass through is now supported through a new scsi-block device. The scsi-block device works with block devices (like /dev/sda or /dev/sr0) rather than /dev/sgN devices, and is more efficient because it does not consume arbitrary amounts of memory when the guest does large data transfers.
* SCSI CD-ROMs now report media changed events.
* SCSI CD-ROMs now support DVD images.
* Bugfixes for IDE media change also apply to SCSI.
* SCSI devices now report a unit attention condition when the system is started or reset. This may cause problems with old firmware versions.

=== VDI ===
* Now supports discarded blocks in dynamically-sized images.

== User-mode networking (SLIRP) ==
* SLIRP can process ARP replies and gratuitous ARP requests from the guest.

== ARM ==
* QEMU now supports the new Cortex-A15 instructions in linux-user mode (via "-cpu any"): VFPv4 fused multiply-accumulate (VFMA, VFMS, VFNMA, VFNMS) and also integer division (UDIV, SDIV). * The vexpress-a9, versatileab, versatilepb and realview-* boards now have audio support. * QEMU is known not to work on ARM hosts in this release. (ARM target emulation is fine.)

=== pSeries ===
* sPAPR VIO devices can now be created with -device.

== Xtensa ==
* QEMU now supports DC232b and FSF xtensa CPU cores.
* QEMU now supports sim (similar to Tensilica ISS) and LX60/LX110/LX200
machines.

== Migration ==
* QEMU now supports live migration using image files like QCOW2 on shared
storage

ikimi

一直用QEMU测试可启动ISO

种过一豆

ikimi 发表于 2011-12-4 15:21
一直用QEMU测试可启动ISO

前端？

subool

这东东可能会成了第三强! 前两个是vm和vb.

左岸麦田

八年开发的一定要支持啦。喜欢用他测试PE~哈哈。蛮好用的。

qaskl123

真是个好东东  

rw1806

还有这么高端的东东，一个劲地收藏。

279455936

以前用过一次，不过现在估计应该 还没有中文吧。

水歌

subool 发表于 2011-12-4 21:25
这东东可能会成了第三强! 前两个是vm和vb.

vb还轮不上号