On 12/21/2010 10:07 AM, Markus Armbruster wrote:
"Richard W.M. Jones"<rjo...@redhat.com>  writes:

On Tue, Dec 21, 2010 at 04:41:03PM +0100, Markus Armbruster wrote:
Like this?

upstream qemu   |  default  |-enable-kvm
----------------+-----------+-----------
KVM available   | disabled  |  enabled
KVM unavailable | disabled  |    fail

qemu-kvm        |  default  |-enable-kvm|  -no-kvm
----------------+-----------+-----------+-----------
KVM available   |  enabled* |  enabled  |  disabled
KVM unavailable | disabled  |    fail   |  disabled

* differs from upstream
libguestfs wants "best effort" behaviour, and libvirt wants "KVM or die"
behaviour.
For what it's worth, default gives you exactly that with qemu-kvm.
Maybe that's good enough, on the theory that if you have KVM, you most
likely have libguestfs using qemu-kvm.

Avi, can you comment on whether just opening /dev/kvm O_RDWR is a
reasonable way to detect if KVM is available?

Markus, any idea when we might get the -accel option appearing in
released versions of qemu/KVM?
No idea.  Anthony?

I see no problem with 0.15 if someone cooks up a patch.

Regards,

Anthony Liguori


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