[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

Re: [libvirt] [PATCH 3/3] Stop accessing driver->caps directly in QEMU driver

On Thu, Feb 07, 2013 at 11:47:41AM +0100, Jiri Denemark wrote:
> On Wed, Feb 06, 2013 at 11:54:51 +0000, Daniel P. Berrange wrote:
> > From: "Daniel P. Berrange" <berrange redhat com>
> > 
> > The 'driver->caps' pointer can be changed on the fly. Accessing
> > it currently requires the global driver lock. Isolate this
> > access in a single helper, so a future patch can relax the
> > locking constraints.
> ...
> I checked that no direct access to driver->caps remained.
> There are quite a few places where virQEMUDriverGetCapabilities is
> called on an unlocked driver but that's not your fault. The bug has been
> there even for years in some cases. Anyway, I guess one of your next
> series will fix all these issues by changing the way we use qemu driver
> lock.

Yeah, there are loads of bugs in this area :-(

I've got 4 more patches queued and then the really nice one - deleting
nearly every single case of qemuDriverLock/Unlock :-)

|: http://berrange.com      -o-    http://www.flickr.com/photos/dberrange/ :|
|: http://libvirt.org              -o-             http://virt-manager.org :|
|: http://autobuild.org       -o-         http://search.cpan.org/~danberr/ :|
|: http://entangle-photo.org       -o-       http://live.gnome.org/gtk-vnc :|

[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]