Alex Deucher <alexdeucher@xxxxxxxxx> writes: > On Mon, Sep 9, 2013 at 5:21 AM, Markus Trippelsdorf > <markus@xxxxxxxxxxxxxxx> wrote: > >> IIRC Alex said the sanity checks are expensive and boot-time could be >> improved by dropping them. Maybe he can chime in? > > They shouldn't be necessary with a proper shutdown, but in this > particular case, they are not very expensive. What is expensive is > having a separate sanity check functions for all the various hw blocks > to teardown everything on startup prior to starting it up in case > kexec, etc. left the system in a bad state. It ends up amounting to a > full tear down sequence followed by a full start up sequence every > time you load the driver. > > I can't really comment on the first patch, but the rest seem fine. Let me reask the question just a little bit. Is it the sanity checks that are expensive? Or is it the reinitialization that is triggered by the sanity checks that is expensive? >From what Christian said in the other reply it sounds like this is a game we will never completely win, but it would be nice to have half a chance in the kexec on panic case to have video. So I am curious to know if the checks are expensive when we are coming at hardware in a clean state. Eric _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
