Re: [RFC PATCH V6 1/7] drm/xe: Link VRAM object with gpu buddy

[Matthew Brost <matthew.brost@intel.com>]

On Fri, Mar 27, 2026 at 05:18:14PM +0530, Tejas Upadhyay wrote:
> Setup to link TTM buffer object inside gpu buddy. This functionality
> is critical for supporting the memory page offline feature on CRI,
> where identified faulty pages must be traced back to their
> originating buffer for safe removal.
> 

I just checked the SVM code is still setting 'block->private'.

I thought we had patch for that but I don't see it in this series.

Matt

> Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
> ---
>  drivers/gpu/drm/xe/xe_ttm_vram_mgr.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c b/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c
> index 5fd0d5506a7e..c627dbf94552 100644
> --- a/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c
> +++ b/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c
> @@ -54,6 +54,7 @@ static int xe_ttm_vram_mgr_new(struct ttm_resource_manager *man,
>  	struct xe_ttm_vram_mgr *mgr = to_xe_ttm_vram_mgr(man);
>  	struct xe_ttm_vram_mgr_resource *vres;
>  	struct gpu_buddy *mm = &mgr->mm;
> +	struct gpu_buddy_block *block;
>  	u64 size, min_page_size;
>  	unsigned long lpfn;
>  	int err;
> @@ -138,6 +139,8 @@ static int xe_ttm_vram_mgr_new(struct ttm_resource_manager *man,
>  	}
>  
>  	mgr->visible_avail -= vres->used_visible_size;
> +	list_for_each_entry(block, &vres->blocks, link)
> +		block->private = tbo;
>  	mutex_unlock(&mgr->lock);
>  
>  	if (!(vres->base.placement & TTM_PL_FLAG_CONTIGUOUS) &&
> -- 
> 2.52.0
>