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Joanna Rutkowska 2013-06-23 08:19:46 +00:00
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@ -21,7 +21,7 @@ Often it is more difficult to exploit a bug on the x64 Linux than it is on x86 L
There a few things that are KDE-specific, but generally it should not be a big problem to also add Gnome support to Qubes (in Dom0 of course). Those KDE-specific things are:
- Qubes requires KDM (KDE Login Manager), rather than GDM, for the very simple reason that GDM doesn't obey standards and start ```/usr/bin/Xorg``` instead of ```/usr/bin/X```. This is important for Qubes, because we need to load a special "X wrapper" (to make it possible to use Linux usermode shared memory to access Xen shared memory pages in our App Viewers -- see the sources [​here](http://qubes-os.org/gitweb/?p=mainstream/gui.git;a=tree;f=shmoverride;h=75133ddcdad0c6a59e630f005569bb8c758b67c5;hb=HEAD)). So, Qubes makes the ```/usr/bin/X``` to be a symlink to the Qubes X Wrapper, which, in turn, executes the ```/usr/bin/Xorg```. This works well with KDM (and would probably also work with other X login managers), but not with GDM. If somebody succeeded in makeing GDM to execute ```/usr/bin/X``` instead of ```/usr/bin/Xorg```, we would love to hear about it!
- Qubes requires KDM (KDE Login Manager), rather than GDM, for the very simple reason that GDM doesn't obey standards and start `/usr/bin/Xorg` instead of `/usr/bin/X`. This is important for Qubes, because we need to load a special "X wrapper" (to make it possible to use Linux usermode shared memory to access Xen shared memory pages in our App Viewers -- see the sources [​here](http://qubes-os.org/gitweb/?p=mainstream/gui.git;a=tree;f=shmoverride;h=75133ddcdad0c6a59e630f005569bb8c758b67c5;hb=HEAD)). So, Qubes makes the `/usr/bin/X` to be a symlink to the Qubes X Wrapper, which, in turn, executes the `/usr/bin/Xorg`. This works well with KDM (and would probably also work with other X login managers), but not with GDM. If somebody succeeded in makeing GDM to execute `/usr/bin/X` instead of `/usr/bin/Xorg`, we would love to hear about it!
- We maintain a special [repository](/wiki/KdeDom0) for building packages specifically for Qubes Dom0.