From: Jens Axboe Date: Fri, 14 Nov 2025 12:10:09 +0000 (-0700) Subject: Merge branch 'p2pdma-mmio-6.19.v5' into for-6.19/block X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=fa0d2dc69e945ddbb1d023dfb4f7ba4103523213;p=thirdparty%2Flinux.git 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 * p2pdma-mmio-6.19.v5: block-dma: properly take MMIO path nvme-pci: migrate to dma_map_phys instead of map_page --- fa0d2dc69e945ddbb1d023dfb4f7ba4103523213