[Beignet] Beignet crashes on vanilla 3.17.1 with IVB hardware

[Vasily Khoruzhick]

Hi,

As you maybe know, any application which uses beignet OpenCL
implementation crashes on Ivy Bridge hardware when using vanilla
3.17.1 kernel.
I guess it's due to batchbuffer security and patch to disable
batchbuffer security is required, but guys, it fails since 3.16, and
3.17 was released quite a while ago.

Could you cooperate with i915 driver devs to make Beignet working on
vanilla kernel without extra patches?

Thanks!

Regards,
Vasily