On 2/13/08, Dave Airlie <[EMAIL PROTECTED]> wrote: > > So I've been thinking about this stuff a lot lately wrt to getting the > DRM into a state that enables fast-user-switching, GPGPU apps, > different users on a per head one a single card.. > > http://dri.freedesktop.org/wiki/DRMRedesign > > has a nice picture and some notes.. either comment direct on the webpage, > or reply here.. > > A lot of the code heading in this direction just got merged into > modesetting-101, it should in theory all be backwards compat in the single > render/master case... >
Hi, So basically, you'd expose multiple /dev entries for a single piece of hardware. As I said on irc, this would be like exposing /dev/sda1_ext2 and /dev/sda1_xfs and ... which obviously doesn't scale long-term. Lets forget about the concept of "master" for a moment. In a case where the concept of "master" does not exist, an application that can draw to screen (formerly "master") would simply be one that has a scanout BO and is using it. So here is the point: with the current work on enforcing proper permissions on BOs (including scanout BOs), is a separate device really needed ? The reason for doing this device separation in the first place basically comes down to enforcing those permissions properly in a per-app fashion. The same effect could be achieved by enforcing the policy on BO creation instead of device opening. Stephane ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
