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| author | Jens Axboe <axboe@kernel.dk> | 2025-11-14 05:10:09 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2025-11-14 05:10:09 -0700 |
| commit | fa0d2dc69e945ddbb1d023dfb4f7ba4103523213 (patch) | |
| tree | 4512b28a5e01e2d581381a7f75fce083be3e906b /tools/lib/python/kdoc/kdoc_files.py | |
| parent | 8e1bf774ab18157cb8041628f2661aa12e425914 (diff) | |
| parent | 37f0c7a8df7ad719a68fa1c2dbf066cfebc391a7 (diff) | |
Merge branch 'p2pdma-mmio-6.19.v5' into for-6.19/block
Merge MMIO P2P DMA series from Leon:
"This patch series improves block layer and NVMe driver support for MMIO
memory regions, particularly for peer-to-peer (P2P) DMA transfers that
go through the host bridge.
The series addresses a critical gap where P2P transfers through the
host bridge (PCI_P2PDMA_MAP_THRU_HOST_BRIDGE) were not properly marked
as MMIO memory, leading to potential issues with:
- Inappropriate CPU cache synchronization operations on MMIO regions
- Incorrect DMA mapping/unmapping that doesn't respect MMIO semantics
- Missing IOMMU configuration for MMIO memory handling
This work is extracted from the larger DMA physical API improvement
series [1] and focuses specifically on block layer and NVMe
requirements for MMIO memory support.
[1] https://lore.kernel.org/all/cover.1757423202.git.leonro@nvidia.com/"
Link: https://lore.kernel.org/linux-block/20251114-block-with-mmio-v5-0-69d00f73d766@nvidia.com/
Signed-off-by: Jens Axboe <axboe@kernel.dk>
* p2pdma-mmio-6.19.v5:
block-dma: properly take MMIO path
nvme-pci: migrate to dma_map_phys instead of map_page
Diffstat (limited to 'tools/lib/python/kdoc/kdoc_files.py')
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