On Thu, Apr 30, 2015 at 06:19:06PM +0000, Meng, David wrote: > Hi Team: > > Greetings. > > > > I am new to send a question to this email list. I am working on GPU > driver for VMware ESXi kernel running on BDW system. The driver is based > on the OTC graphics driver which is released with Linux 3.19.3. > > > > When I tested the driver using the test case gem_alive from > intel-gpu-tools -1.7, the result is always fail. The kernel driver > complains that the object handle is 0. By checking the gem_alive.c code, > it is found the test case dose not create any gem object but tries to use > DRM_IOCTL_I915_GEM_SW_FINISH ioctl call to finish a object. As a result, > it returns –ENOENT error. > > > I wonder is there any special kernel driver feature to be tested by this > case? Or we expect it is always fail? The clue is in the various errno that is checked by gem_alive, and consider how they can arise from various scenarios. In short, the test can differentiate between a kernel deadlock, a GPU hang and a functioning interface. It answers the question of whether "GEM is alive". -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
