[Mageia-dev] qemu new upstream release (1.0-rc1) and should we move from qemu-kvm to qemu?

Anne Nicolas ennael1 at gmail.com
Sat Nov 12 17:57:03 CET 2011

Le 12/11/2011 16:44, Kamil Rytarowski a écrit :
> Let me paste from the Arch Linux wiki documentation:
> -- 
> Difference between qemu and qemu-kvm
> Depending on your needs, you can choose either to install upstream qemu
> or qemu-kvm from the official repositories.
> Upstream QEMU is a pure emulator, with no hardware acceleration. qemu
> versions < 0.15.0 do have initial KVM support when QEMU is started with
> the -enable-kvm parameter, but this implementation is still buggy and
> nowhere as complete as in qemu-kvm, as many functions still do not work.
> Starting with qemu version 0.15.0, the qemu-kvm tree has been fully
> integrated with the qemu tree, and there should not be any difference
> between qemu -enable-kvm and qemu-kvm. See the [QEMU changelog] for more
> details.
> Upstream QEMU is capable of emulating many different platforms (arm,
> i386, m68k, mips, ppc, sparc, x86_64, etc). On the other hand, you have
> qemu-kvm, which is qemu (i386 and x86_64 architecture support only) with
> KVM (kernel-based virtual machine) additions, allowing you to run
> virtual machines at close to native speed. qemu-kvm is the version you
> want if you have a CPU that supports hardware virtualization and you
> only need to run virtual machines for the i386 and x86_64 architectures
> (Linux, Windows, BSD, etc).
> Not all processors support KVM. You will need an x86-based machine
> running a recent ( >= 2.6.22 ) Linux kernel on an Intel processor with
> VT-x (virtualization technology) extensions or an AMD processor with SVM
> (Secure Virtual Machine) extensions (also called AMD-V). Xen has a
> complete list of compatible processors. For Intel processors, see also
> the Intel® Virtualization Technology List.
> https://wiki.archlinux.org/index.php/QEMU#Difference_between_qemu_and_qemu-kvm
> -- 
> And now from the qemu changelog
> ~~
> Common
>     Countless fixes ported over from qemu-kvm, core is now shared with
> that tree, i.e. has the same quality
>     Pimped up threading model, now fully synchronized with qemu-kvm tree
>     Removed dependency on external kernel headers, all supported KVM
> features are now built into the binary
> http://wiki.qemu.org/ChangeLog/0.15#KVM
> ~~
> What do you think? Can we move?
> There is also one important patch missed in Mageia -
> http://lists.gnu.org/archive/html/qemu-devel/2011-11/msg00787.html it's
> dependency for the GNS3 simulator. OpenSUSE already includes it
> https://build.opensuse.org/package/files?package=qemu&project=openSUSE%3ATools
> If nobody is against I will do it and contact the maintainer (misc).

 You should also contact pterjan wo was maintainer for a long time


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