[PATCH v2 0/6] Add DMA attributes tracking

Leon Romanovsky
2026-05-01T06:35:26Z

The DMA API expects that callers use the same attributes when mapping
and unmapping. Add tracking to verify this and catch mismatches.

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://patch.msgid.link/20260323-dma-attrs-debug-v1-1-6275228ca300@nvidia.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@nvidia.com>