Bug 822613 - libvirt should use qemu "enforce" -cpu flag
Summary: libvirt should use qemu "enforce" -cpu flag
Status: CLOSED DUPLICATE of bug 822148
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: libvirt
Version: 6.3
Hardware: Unspecified
OS: Unspecified
Target Milestone: rc
: ---
Assignee: Martin Kletzander
QA Contact: Virtualization Bugs
Depends On: 692374
TreeView+ depends on / blocked
Reported: 2012-05-17 15:41 UTC by Eduardo Habkost
Modified: 2013-01-25 11:34 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of: 822148
Last Closed: 2012-08-09 05:47:45 UTC
Target Upstream Version:

Attachments (Terms of Use)

Description Eduardo Habkost 2012-05-17 15:41:21 UTC
Cloning bug for 6.4.

This depends on bug 692374, that is about making "-cpu enforce" work reliably.

+++ This bug was initially created as a clone of Bug #822148 +++

Description of problem:
To make sure libvirt is always getting exactly the CPU flags it asked qemu for, it has to use "-cpu <model>,enforce", so qemu won't start if the requested flags can't be exposed.

This may be a problem in case users have existing VMs that are working perfectly for them, but would fail to start if "enforce" is used. Maybe the new behavior could be enabled only for new machine-types?

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