Re: [PATCH] iommu/dma: add missing support for DMA_ATTR_MMIO for dma_iova_unlink()

[Jason Gunthorpe]

On Mon, Nov 24, 2025 at 06:09:55PM +0100, Marek Szyprowski wrote:
> Commit c288d657dd51 added support for DMA_ATTR_MMIO attribute in the
> dma_iova_link() code path, but missed that the CPU cache is being also
> touched in the dma_iova_unlink() path. Fix this.
> 
> Fixes: c288d657dd51 ("iommu/dma: implement DMA_ATTR_MMIO for dma_iova_link().")
> Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> ---
>  drivers/iommu/dma-iommu.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx>

Did you find it by code inspection?

Jason