Cole Robinson <crobi...@redhat.com> writes: > This switch will turn on all the migration compat bits needed to > perform migration from qemu-kvm to qemu. It's just a stub for now. > > This compat will break incoming migration from qemu < 1.3, but for > distros where qemu-kvm was the only shipped package for years it's > not a big loss (and I don't know any way to avoid it). > > Signed-off-by: Cole Robinson <crobi...@redhat.com>
This can't be a build time option. It's ugly and just reintroduces a fork. I assume the issue with making it a run time option is that libvirt would need to be updated? Why can't qemu-kvm be a script wrapper that passes a fixed flag? Regards, Anthony Liguori > --- > configure | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/configure b/configure > index bf5970f..296f488 100755 > --- a/configure > +++ b/configure > @@ -170,6 +170,7 @@ xfs="" > > vhost_net="no" > kvm="no" > +migrate_from_kvm="no" > gprof="no" > debug_tcg="no" > debug="no" > @@ -759,6 +760,8 @@ for opt do > ;; > --enable-kvm) kvm="yes" > ;; > + --enable-migration-from-qemu-kvm) migrate_from_kvm="yes" > + ;; > --disable-tcg-interpreter) tcg_interpreter="no" > ;; > --enable-tcg-interpreter) tcg_interpreter="yes" > @@ -1087,6 +1090,9 @@ echo " --enable-bluez enable bluez stack > connectivity" > echo " --disable-slirp disable SLIRP userspace network > connectivity" > echo " --disable-kvm disable KVM acceleration support" > echo " --enable-kvm enable KVM acceleration support" > +echo " --enable-migration-from-qemu-kvm Allow migration from qemu-kvm." > +echo " This will break migration from " > +echo " qemu < 1.3 in most cases" > echo " --enable-tcg-interpreter enable TCG with bytecode interpreter (TCI)" > echo " --disable-nptl disable usermode NPTL support" > echo " --enable-nptl enable usermode NPTL support" > @@ -3334,6 +3340,7 @@ echo "Linux AIO support $linux_aio" > echo "ATTR/XATTR support $attr" > echo "Install blobs $blobs" > echo "KVM support $kvm" > +echo "Migrate from qemu-kvm $migrate_from_kvm" > echo "TCG interpreter $tcg_interpreter" > echo "fdt support $fdt" > echo "preadv support $preadv" > @@ -3622,6 +3629,9 @@ fi > if test "$signalfd" = "yes" ; then > echo "CONFIG_SIGNALFD=y" >> $config_host_mak > fi > +if test "$migrate_from_kvm" = "yes"; then > + echo "CONFIG_MIGRATE_FROM_QEMU_KVM=y" >> $config_host_mak > +fi > if test "$tcg_interpreter" = "yes" ; then > echo "CONFIG_TCG_INTERPRETER=y" >> $config_host_mak > fi > -- > 1.8.1.2
