Re: [PATCH v5 1/6] drm/xe/guc: Allow to replace xe_guc_mmio_send_recv() with KUNIT stub

On 8/10/2026 12:14 PM, Satyanarayana K V P wrote:
> Allow to replace xe_guc_mmio_send_recv() with the stub so we can
> exercise more code paths on the fake xe device during kunit tests.
> 
> Signed-off-by: Satyanarayana K V P <[email protected]>
> Cc: Michal Wajdeczko <[email protected]>

Reviewed-by: Michal Wajdeczko <[email protected]>

> ---
> V4 -> V5:
> - Fixed review comments (Michal W).
> ---
>  drivers/gpu/drm/xe/xe_guc.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/gpu/drm/xe/xe_guc.c b/drivers/gpu/drm/xe/xe_guc.c
> index 4286bd05c686..82e67e9219bd 100644
> --- a/drivers/gpu/drm/xe/xe_guc.c
> +++ b/drivers/gpu/drm/xe/xe_guc.c
> @@ -6,6 +6,8 @@
>  #include "xe_guc.h"
>  
>  #include <linux/iopoll.h>
> +#include <kunit/static_stub.h>
> +
>  #include <drm/drm_managed.h>
>  
>  #include <generated/xe_wa_oob.h>
> @@ -1509,6 +1511,9 @@ int xe_guc_mmio_send_recv(struct xe_guc *guc, const u32 *request,
>  	int ret;
>  	int i;
>  
> +	KUNIT_STATIC_STUB_REDIRECT(xe_guc_mmio_send_recv, guc, request, len,
> +				   response_buf);
> +
>  	BUILD_BUG_ON(VF_SW_FLAG_COUNT != MED_VF_SW_FLAG_COUNT);
>  
>  	xe_assert(xe, len);