[Intel-gfx] [PATCH 3/3] drm/i915/gvt: Return -EIO if host GuC submission is enabled when loading GVT-g

[Chris Wilson]

On Fri, May 26, 2017 at 11:04:19AM +0800, Chuanxiao Dong wrote:
> Currently GVT-g cannot work properly when host GuC submission is
> enabled, so make i915 driver loading failed in this case.
> 
> Suggested-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
> Suggested-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Zhenyu Wang <zhenyuw at linux.intel.com>
> Signed-off-by: Chuanxiao Dong <chuanxiao.dong at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_gvt.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/intel_gvt.c b/drivers/gpu/drm/i915/intel_gvt.c
> index c90d476..63bff89 100644
> --- a/drivers/gpu/drm/i915/intel_gvt.c
> +++ b/drivers/gpu/drm/i915/intel_gvt.c
> @@ -100,6 +100,11 @@ int intel_gvt_init(struct drm_i915_private *dev_priv)
>  		return -EIO;
>  	}
>  
> +	if (i915.enable_guc_submission) {
> +		DRM_INFO("Graphics virtualization is not yet supported with GuC submission");
> +		return -EIO;
> +	}

Again, this is an actual DRM_ERROR as it is fatal.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre