mirror of
https://github.com/libvirt/libvirt.git
synced 2025-02-25 18:55:26 -06:00
def9401acb
When starting a domain with custom guest CPU specification QEMU may add or remove some CPU features. There are several reasons for this, e.g., QEMU/KVM does not support some requested features or the definition of the requested CPU model in libvirt's cpu_map.xml differs from the one QEMU is using. We can't really avoid this because CPU models are allowed to change with machine types and libvirt doesn't know (and probably doesn't even want to know) about such changes. Thus when we want to make sure guest ABI doesn't change when a domain gets migrated to another host, we need to update our live CPU definition according to the CPU QEMU created. Once updated, we will change CPU checking to VIR_CPU_CHECK_FULL to make sure the virtual CPU created after migration exactly matches the one on the source. https://bugzilla.redhat.com/show_bug.cgi?id=822148 https://bugzilla.redhat.com/show_bug.cgi?id=824989 Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>