On Thu, 17 Mar 2005, Ville [iso-8859-1] Syrjälä wrote: > On Thu, Mar 17, 2005 at 12:12:58PM +1100, Benjamin Herrenschmidt wrote: > > > I understand you can't have userspace program the accelerator while > > > someone else is doing the same thing. Oh and I now understand that the > > > same really applies to direct framebuffer access due to the swapper. > > > > And you can't have someone program the accelerator while somebody does > > direct access neither. It's basically all exclusive. > > I haven't seen that happen on any hardware I own. Matrox specs explicitly > mention that there is no need to synchronize accelerator and direct > framebuffer access.
Really? I was always given Matrox as an example of a card that would lock up if you access the frame buffer while the accelerator is busy... Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [EMAIL PROTECTED] In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds