Re: [PATCH] iommupt: Always add IOVA range to iotlb_gather in gather_range_pages()

[Jason Gunthorpe]

On Mon, Feb 02, 2026 at 05:54:58PM +0800, Yu Zhang wrote:
> diff --git a/drivers/iommu/generic_pt/iommu_pt.h b/drivers/iommu/generic_pt/iommu_pt.h
> index d575f3ba9d34..3e33fe64feab 100644
> --- a/drivers/iommu/generic_pt/iommu_pt.h
> +++ b/drivers/iommu/generic_pt/iommu_pt.h
> @@ -58,10 +58,9 @@ static void gather_range_pages(struct iommu_iotlb_gather *iotlb_gather,
>  		 * Note that the sync frees the gather's free list, so we must
>  		 * not have any pages on that list that are covered by iova/len
>  		 */
> -	} else if (pt_feature(common, PT_FEAT_FLUSH_RANGE)) {
> -		iommu_iotlb_gather_add_range(iotlb_gather, iova, len);
>  	}
>  
> +	iommu_iotlb_gather_add_range(iotlb_gather, iova, len);
>  	iommu_pages_list_splice(free_list, &iotlb_gather->freelist);
>  }

Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx>

This should have a 

    Cc: stable@xxxxxxxxxxxxxxx

It is a serious error.

Thanks,
Jason