Re: [PATCH 3/4] drm/i915: Flatten DRIVER_MODESET checks in i915_irq.c

Imre Deak
2015-02-19T13:39:53Z

On to, 2015-02-19 at 12:25 +0000, Dave Gordon wrote:
> On 12/02/15 22:38, Imre Deak wrote:
> > On Tue, 2015-02-03 at 11:30 +0100, Daniel Vetter wrote:
> >> UMS is no more!
> >>
> >> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
>
> Some machines now won't boot in "recovery mode", which specifies
> "nomodeset" and therefore results in various important bits of code not
> being executed. Will we eventually ignore "modeset" completely, or just
> refuse to load at all if "nomodeset" is explicitly specified?

The driver will already refuse to load with nomodeset for GEN6+ for
quite some time now. On old platforms UMS would still work before this
patch, but afaik there was a decision to stop supporting UMS. Note that
this doesn't mean "recovery mode" or equivalently nomodeset will break
booting, it just means user space will fall back to vesa/vga or text
mode.

--Imre