Bug 503807

Summary: kqemu is disabled in qemu
Product: [Fedora] Fedora Reporter: J Gallagher <jbgallagher2000>
Component: qemuAssignee: Glauber Costa <gcosta>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: rawhideCC: dwmw2, gcosta, itamar, markmc, virt-maint
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Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2009-06-02 17:15:42 EDT Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description J Gallagher 2009-06-02 15:56:37 EDT
Description of problem:
qemu doesn't allow -kernel-kqemu option

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. try qemu -kernel-kqemu ...
Actual results:
qemu: invalid option -- '-kernel-kqemu'

Expected results:
kqemu module should be loaded

Additional info:
Comment 1 Glauber Costa 2009-06-02 17:15:42 EDT
This is intended.

Unfortunately, there's no way to build a binary that supports both kvm and kqemu.
There are ongoing upstream threads about it. kqemu is dead technology, not because of its functionalities, but because it imposes *severe* limitation on upstream qemu, and currently no one have the will or skill to maintain it.

In fedora, we don't ship the kernel module, because it is not in upstream kernel. So if you want to run kqemu, you'll need to build the module anyway. Just build your own qemu in that case.