[PATCH 1/2] drm/xe/vf: Return EOPNOTSUPP for DRM_XE_DEVICE_QUERY_ENGINE_CYCLES if VF

[K V P, Satyanarayana]

Hi.
> -----Original Message-----
> From: Intel-xe <intel-xe-bounces at lists.freedesktop.org> On Behalf Of Marcin
> Bernatowicz
> Sent: Thursday, February 6, 2025 12:47 AM
> To: intel-xe at lists.freedesktop.org
> Cc: Marcin Bernatowicz <marcin.bernatowicz at linux.intel.com>; Wajdeczko,
> Michal <Michal.Wajdeczko at intel.com>; Winiarski, Michal
> <michal.winiarski at intel.com>; Nerlige Ramappa, Umesh
> <umesh.nerlige.ramappa at intel.com>
> Subject: [PATCH 1/2] drm/xe/vf: Return EOPNOTSUPP for
> DRM_XE_DEVICE_QUERY_ENGINE_CYCLES if VF
> 
> RING_TIMESTAMP registers are not available for VF (Virtual Function)
> drivers. Return -EOPNOTSUPP when the
> DRM_XE_DEVICE_QUERY_ENGINE_CYCLES
> ioctl is invoked on a VF device.
> 
> Signed-off-by: Marcin Bernatowicz <marcin.bernatowicz at linux.intel.com>
> Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
> Cc: Michał Winiarski <michal.winiarski at intel.com>
> Cc: Umesh Nerlige Ramappa <umesh.nerlige.ramappa at intel.com>
> ---
LGTM. 
Reviewed-by: Satyanarayana K V P <satyanarayana.k.v.p at intel.com>
>  drivers/gpu/drm/xe/xe_query.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/xe/xe_query.c b/drivers/gpu/drm/xe/xe_query.c
> index 042f87a688e7..ebfae746f861 100644
> --- a/drivers/gpu/drm/xe/xe_query.c
> +++ b/drivers/gpu/drm/xe/xe_query.c
> @@ -121,6 +121,9 @@ query_engine_cycles(struct xe_device *xe,
>  	struct xe_gt *gt;
>  	unsigned int fw_ref;
> 
> +	if (IS_SRIOV_VF(xe))
> +		return -EOPNOTSUPP;
> +
>  	if (query->size == 0) {
>  		query->size = size;
>  		return 0;
> --
> 2.31.1