Re: [PATCH v2 0/3] NTB: Allow drivers to provide DMA mapping device

Manivannan Sadhasivam <[email protected]> Thu, 26 Mar 2026 22:49:11 +0530

Newsgroups	dev.linux.lists.ntb,org.kernel.vger.linux-kernel,org.kernel.vger.linux-pci
Message-ID	<177454555116.460009.16357964565477922352.b4-ty@b4>

On Fri, 06 Mar 2026 12:14:40 +0900, Koichiro Den wrote:
> Some NTB implementations are backed by a "virtual" PCI device, while the
> actual DMA mapping context (IOMMU domain) belongs to a different device.
> 
> One example is vNTB, where the NTB device is represented as a virtual
> PCI endpoint function, but DMA operations must be performed against the
> EPC parent device, which owns the IOMMU context.
> 
> [...]

Applied, thanks!

[1/3] NTB: core: Add .get_dma_dev() callback to ntb_dev_ops
      commit: af43a3a0c0ad524a69a7921efd0a04d50c03090b
[2/3] NTB: ntb_transport: Use ntb_get_dma_dev() for DMA buffers
      commit: c2fbbb8b341c58d24c7b114fae4cadd55a4660f1
[3/3] PCI: endpoint: pci-epf-vntb: Implement .get_dma_dev()
      commit: 185596ad93f545bcab2fea0dad6420c0c3cb386f

Best regards,
-- 
Manivannan Sadhasivam <[email protected]>