QEMU
https://www.qemu.org/documentation/
QEMU is a generic and open source machine emulator and virtualizer.
QEMU can be used in several different ways. The most common is for System Emulation, where it provides a virtual model of an entire machine (CPU, memory and emulated devices) to run a guest OS. In this mode the CPU may be fully emulated, or it may work with a hypervisor such as KVM or Xen to allow the guest to run directly on the host CPU.
Note that this package is produced using a Git based workflow. Please refer to README.PACKAGING before making modifications.
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Revision 601 (latest revision is 864)
Bruce Rogers (bfrogers)
accepted
request 862991
from
Bruce Rogers (bfrogers)
(revision 601)
- Convert qemu-kvm from a script to a symlink. This method of invoking the QEMU emulator has been deprecated for some time, but is still provided. It has as it's origins a version of QEMU which had KVM acceleration enabled by default. In it's recent incarnation it is a script which adds '-machine accel=kvm' to the beginning of the list of command line options passed to the emulator. This method collides with the now preferred method of specifying acceleration options by using -accel. qemu-kvm is now changed to simply be a symlink to the same QEMU binary which the prior script exec'd. This new approach takes advantage of a built in QEMU feature where if QEMU is invoked using a program name ending in 'kvm', KVM emulation is enabled. This approach is better in that it is more compatible with any other command line option that may be added for specifying acceleration (not that you should do that). For those who have taken advantage of the fact that you can add additional command line options to the qemu-kvm script, or doing other things in that script you will just need to create an alternate script "emulator" to achieve the same. It's possible that there may be some very subtle behavioral difference in the switch from a script to a symlink, but given that qemu-kvm is a deprecated package, we're not going to worry about that.
Comments 5
qemu-kvm ist missing now for all arch!
And this wrong:
Pacakges we OBSOLETE (and CONFLICT)
Obsoletes: kvm <= %{version} Obsoletes: qemu-kvm <= %{version} Obsoletes: qemu-sgabios <= 8
Should be <, not <=
I'm sorry, maybe I still missing something about Obsoletes & Friends enough... Can you help me understand why qemu-kvm would be missing for all arches? In fact, I'm not only Obsoleting it, I'm also Providing it, isn't that fine?
FWIW, I've done a few tests with this repository enabled, and it seemed to work:
I.e., as you can see, no
qemu-kvmpackage is being installed:$ rpm -qa|grep qemu-kvm $
And:
Furthermore, if I have the actual
qemu-kvmpackage installed, with<=it is automatically removed, which is what I want... So things look good to me. What am I missing?First a short answer. An offered version (=) cannot be obsolete (<=) at the same time.
And why should qemu-kvm be removed? Doesn't the package require other packages to build or install?
Mmm... I guess I can try with "Obsoletes: qemu-kvm < %{version}-%{release}
But, yes, the actual qemu-kvm package must be removed, because now the qemu pacakge Obsoletes it, by providing everything that it was providing before (i.e., one symlink).
I don't understand what you mean with "Doesn't the package require other packages to build or install?"
Ok, I've now tested
Obsoletes: qemu-kvm < %{version}-%{release}, and no, it does not do what I want and need, whileObsoletes: qemu-kvm = %{version}does. And the SR has been accepted already, so I'm sticking to that