On Thu, Sep 06, 2012 at 02:25:12AM -0700, Kent Overstreet wrote: > On Thu, Sep 06, 2012 at 11:44:03AM +0300, Michael S. Tsirkin wrote: > > On Thu, Sep 06, 2012 at 12:41:13AM -0700, Kent Overstreet wrote: > > > On Tue, Sep 04, 2012 at 03:53:53PM +0930, Rusty Russell wrote: > > > > Kent Overstreet <koverstr...@google.com> writes: > > > > > > > > > CONFIG_VIRTIO isn't exposed, everything else is supposed to select it > > > > > instead. > > > > > > > > This is a slight mis-understanding. It's supposed to be selected by > > > > the particular driver, probably virtio_pci in your case. > > > > > > So are you saying virtio-blk depends on virtio-pci? If so, the kconfig > > > should have that. > > > > > > As is, VIRTIO_BLK just has: > > > depends on EXPERIMENTAL && VIRTIO > > > > > > which is flat out broken. > > > > I don't think anything is broken. > > Can you show an example of a broken configuration? > > Do you not understand the difference between depends an selects? > Or did you not read my original mail? > Flip off everything in drivers -> virtio > > Now go to drivers -> block and try to turn on virtio-blk. > > It's not listed!
Yes. Because you disabled all virtio backends. It does not make sense to have any frontends. > Now go back to drivers -> virtio and turn on (randomly) balloon. > > Go back to drivers -> block, and now you can turn on virtio-blk! > > Do you see what's wrong with this picture? Yes. You got unlucky with your random guess. It's a bug in balloon kconfig: it should not select virtio. I sent a patch to fix that yesterday. -- MST -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
