Re: [RFC PATCH V9 05/10] drm/xe: Extend BO purge to handle vram pages as well

["Yadav, Arvind" <arvind.yadav@intel.com>]

LGTM:
Reviewed-by:  Arvind Yadav <arvind.yadav@intel.com>

On 06-05-2026 19:41, Tejas Upadhyay wrote:
> Recent driver update introduce support for purgeable buffer
> objects (BOs), extending the API to include VRAM pages to
> better manage memory pressure and enable memory offlining.
>
> Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
> ---
>   drivers/gpu/drm/xe/xe_bo.c | 5 +----
>   drivers/gpu/drm/xe/xe_bo.h | 1 +
>   2 files changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/xe/xe_bo.c b/drivers/gpu/drm/xe/xe_bo.c
> index 5ce60d161e09..04d3b25c7c8e 100644
> --- a/drivers/gpu/drm/xe/xe_bo.c
> +++ b/drivers/gpu/drm/xe/xe_bo.c
> @@ -903,7 +903,7 @@ void xe_bo_set_purgeable_state(struct xe_bo *bo,
>    *
>    * Return: 0 on success, negative error code on failure
>    */
> -static int xe_ttm_bo_purge(struct ttm_buffer_object *ttm_bo, struct ttm_operation_ctx *ctx)
> +int xe_ttm_bo_purge(struct ttm_buffer_object *ttm_bo, struct ttm_operation_ctx *ctx)
>   {
>   	struct xe_bo *bo = ttm_to_xe_bo(ttm_bo);
>   	struct ttm_placement place = {};
> @@ -911,9 +911,6 @@ static int xe_ttm_bo_purge(struct ttm_buffer_object *ttm_bo, struct ttm_operatio
>   
>   	xe_bo_assert_held(bo);
>   
> -	if (!ttm_bo->ttm)
> -		return 0;
> -
>   	if (!xe_bo_madv_is_dontneed(bo))
>   		return 0;
>   
> diff --git a/drivers/gpu/drm/xe/xe_bo.h b/drivers/gpu/drm/xe/xe_bo.h
> index 68dea7d25a6b..9f55b3589caf 100644
> --- a/drivers/gpu/drm/xe/xe_bo.h
> +++ b/drivers/gpu/drm/xe/xe_bo.h
> @@ -500,6 +500,7 @@ struct xe_bo_shrink_flags {
>   long xe_bo_shrink(struct ttm_operation_ctx *ctx, struct ttm_buffer_object *bo,
>   		  const struct xe_bo_shrink_flags flags,
>   		  unsigned long *scanned);
> +int xe_ttm_bo_purge(struct ttm_buffer_object *ttm_bo, struct ttm_operation_ctx *ctx);
>   
>   /**
>    * xe_bo_is_mem_type - Whether the bo currently resides in the given