Re: [PATCH v2 0/6] Add DMA attributes tracking

[Marek Szyprowski]

On 01.05.2026 08:35, Leon Romanovsky wrote:
> The DMA API expects that callers use the same attributes when mapping
> and unmapping. Add tracking to verify this and catch mismatches.

I would like to merge this to dma-mapping-for-next, but I have a question about ntb
patches - Jon, Dave, Allen: do You plan to take them (either to the fixes or to the
-next) or do You want me to take them together with dma patches?


> Thanks
>
> ---
> Changes in v2:
> - Split original patch to be a series
> - Added all unmap flows
> - Skipped DMA attributes which exist only in map path
> - Added ntb patch
> - Link to v1: https://protect2.fireeye.com/v1/url?k=70e722e7-116c37d7-70e6a9a8-000babffaa23-c39f7f9efe32c6a2&q=1&e=c79241ff-9ff4-40ae-8e29-753dd9d59f23&u=https%3A%2F%2Fpatch.msgid.link%2F20260323-dma-attrs-debug-v1-1-6275228ca300%40nvidia.com
>
> ---
> Leon Romanovsky (6):
>       ntb: Store original DMA address for future release
>       ntb: Use consistent DMA attributes when freeing DMA mappings
>       dma-debug: Remove unused DMA attribute parameter
>       dma-debug: Record DMA attributes in debug entry
>       dma-debug: Feed DMA attribute for unmapping flows too
>       dma-debug: Ensure mappings are created and released with matching attributes
>
>  drivers/ntb/ntb_transport.c | 10 +++---
>  kernel/dma/debug.c          | 87 +++++++++++++++++++++++++++++++--------------
>  kernel/dma/debug.h          | 25 ++++++-------
>  kernel/dma/mapping.c        | 10 +++---
>  4 files changed, 85 insertions(+), 47 deletions(-)
> ---
> base-commit: 254f49634ee16a731174d2ae34bc50bd5f45e731
> change-id: 20260323-dma-attrs-debug-85e282d6f3bb
>
> Best regards,
> --  
> Leon Romanovsky <leonro@xxxxxxxxxx>
>
>
Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland