[Intel-gfx] [PATCH 3/4] drm: Enforce BKL-less ioctls for modern drivers

[Chris Wilson]

On Sat, Dec 10, 2016 at 10:52:54PM +0100, Daniel Vetter wrote:
> With the last round of changes all ioctls called by modern drivers now
> have their own locking. Everything else is only allowed for legacy
> drivers and hence the lack of locking doesn't matter.
> 
> One exception is nouveau, due to the DRIVER_KMS_LEGACY_CONTEXT flag.
> But that only works its magic on the context and bufs ioctls. And
> drm_bufs.c is protected with dev->struct_mutex, and drm_context.c by
> the same and dev->ctxlist_mutex. That should be all safe, and we can
> finally mandata drm-bkl-less ioctls for everyone!
> 
> Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>

Meh, I'd much rather if this was just data driven rather than overriding
based on its own rules. However, it is a small simple step cleaning up
after the core changes, so in that regard

Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>

I'd just rather see DRM_GLOBAL_LOCK instead.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre