Re: [Intel-gfx] [PATCH v3 03/11] drm/i915: return EACCES for check_cmd() failures

On Mon, Aug 15, 2016 at 4:04 PM, Chris Wilson wrote: > On Mon, Aug 15, 2016 at 03:41:20PM +0100, Robert Bragg wrote: > > check_cmd() is checking whether a command adheres to certain > > restrictions that ensure it's safe to execute within a privileged batch > > buffer.

Re: [Intel-gfx] [PATCH v3 03/11] drm/i915: return EACCES for check_cmd() failures

On Mon, Aug 15, 2016 at 03:41:20PM +0100, Robert Bragg wrote: > check_cmd() is checking whether a command adheres to certain > restrictions that ensure it's safe to execute within a privileged batch > buffer. Returning false implies a privilege problem, not that the > command is invalid. > > The

[Intel-gfx] [PATCH v3 03/11] drm/i915: return EACCES for check_cmd() failures

check_cmd() is checking whether a command adheres to certain restrictions that ensure it's safe to execute within a privileged batch buffer. Returning false implies a privilege problem, not that the command is invalid. The distinction makes the difference between allowing the buffer to be