"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?
