Re: [PATCH v1 1/2] drm/xe: Fix Prevent VFs from exposing the CCS mode sysfs file

[Michal Wajdeczko <michal.wajdeczko@intel.com>]

On 11/28/2025 6:10 PM, Nareshkumar Gollakoti wrote:
> Skipping creation of sysfs file in VF Mode to ensure VFs do not expose
> CCS mode changes
> 
> Fixes: f3bc5bb4d53d2 ("drm/xe: Allow userspace to configure CCS mode")
> Signed-off-by: Nareshkumar Gollakoti <naresh.kumar.g@intel.com>

changing CCS mode from the VF never worked and since CCS config is fixed in case of SRIOV, there should be no users that would like to read it back, so

Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>

> ---
>  drivers/gpu/drm/xe/xe_gt_ccs_mode.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/xe/xe_gt_ccs_mode.c b/drivers/gpu/drm/xe/xe_gt_ccs_mode.c
> index 50fffc9ebf62..e146e00b0ca2 100644
> --- a/drivers/gpu/drm/xe/xe_gt_ccs_mode.c
> +++ b/drivers/gpu/drm/xe/xe_gt_ccs_mode.c
> @@ -191,7 +191,7 @@ int xe_gt_ccs_mode_sysfs_init(struct xe_gt *gt)
>  	struct xe_device *xe = gt_to_xe(gt);
>  	int err;
>  
> -	if (!xe_gt_ccs_mode_enabled(gt))
> +	if (!xe_gt_ccs_mode_enabled(gt) || IS_SRIOV_VF(xe))
>  		return 0;
>  
>  	err = sysfs_create_files(gt->sysfs, gt_ccs_mode_attrs);