[PATCH V4 0/3] md/nvme: Enable PCI P2PDMA support for RAID0 and NVMe Multipath

[Jens Axboe]

On Wed, 13 May 2026 11:51:50 -0700, Chaitanya Kulkarni wrote:
> This patch series extends PCI peer-to-peer DMA (P2PDMA) support to enable
> direct data transfers between PCIe devices through RAID and NVMe multipath
> block layers.
> 
> Current Linux kernel P2PDMA infrastructure supports direct peer-to-peer
> transfers, but this support is not propagated through certain storage
> stacks like MD RAID and NVMe multipath. This adds two patches for
> MD RAID 0/1/10 and NVMe to propogate P2PDMA support through the
> storage stack.
> 
> [...]

Applied, thanks!

[1/3] block: clear BLK_FEAT_PCI_P2PDMA in blk_stack_limits() for non-supporting devices
      commit: 7882834048f110931275357db60dccff906dc96a
[2/3] md: propagate BLK_FEAT_PCI_P2PDMA from member devices to RAID device
      commit: 02666132403aec8fc5de315002894f713ef17dbc
[3/3] nvme-multipath: enable PCI P2PDMA for multipath devices
      commit: fb0eeeed91f3236133383445fee5cc8f20330e6e

Best regards,
-- 
Jens Axboe