Quoting Chris Wilson (2018-07-12 19:53:15) > @@ -789,10 +789,12 @@ i915_gem_userptr_ioctl(struct drm_device *dev, > return -EFAULT; > > if (args->flags & I915_USERPTR_READ_ONLY) { > - /* On almost all of the current hw, we cannot tell the GPU that a > - * page is readonly, so this is just a placeholder in the uAPI. > + /* > + * On almost all of the older hw, we cannot tell the GPU that > + * a page is readonly. > */ > - return -ENODEV; > + if (INTEL_GEN(dev_priv) < 8 || !USES_PPGTT(dev_priv)) > + return -ENODEV; Hmm, I need to be more careful here considering gvt. -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx