RE: [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine

[PATCH v8 00/11] vfio/pci: Allow MMIO regions to be exported through dma-buf · Leon Romanovsky <leon@kernel.org> · 2025-11-11
[PATCH v8 02/11] PCI/P2PDMA: Simplify bus address mapping API · Leon Romanovsky <leon@kernel.org> · 2025-11-11
[PATCH v8 01/11] PCI/P2PDMA: Separate the mmap() support from the core logic · Leon Romanovsky <leon@kernel.org> · 2025-11-11
[PATCH v8 04/11] PCI/P2PDMA: Provide an access to pci_p2pdma_map_type() function · Leon Romanovsky <leon@kernel.org> · 2025-11-11
[PATCH v8 03/11] PCI/P2PDMA: Refactor to separate core P2P functionality from memory allocation · Leon Romanovsky <leon@kernel.org> · 2025-11-11
[PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Leon Romanovsky <leon@kernel.org> · 2025-11-11
Re: [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Jason Gunthorpe <jgg@ziepe.ca> · 2025-11-18
Re: [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Nicolin Chen <hidden> · 2025-11-19
Re: [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Leon Romanovsky <leon@kernel.org> · 2025-11-19
RE: [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · "Tian, Kevin" <kevin.tian@intel.com> · 2025-11-19
Re: [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Leon Romanovsky <leon@kernel.org> · 2025-11-19
Re: [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Jason Gunthorpe <jgg@ziepe.ca> · 2025-11-19
Re: [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Leon Romanovsky <leon@kernel.org> · 2025-11-19
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Christian König <christian.koenig@amd.com> · 2025-11-19
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Jason Gunthorpe <jgg@ziepe.ca> · 2025-11-19
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Christian König <christian.koenig@amd.com> · 2025-11-19
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Leon Romanovsky <leon@kernel.org> · 2025-11-19
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Jason Gunthorpe <jgg@ziepe.ca> · 2025-11-19
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Leon Romanovsky <leon@kernel.org> · 2025-11-19
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Christian König <christian.koenig@amd.com> · 2025-11-20
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Leon Romanovsky <leon@kernel.org> · 2025-11-20
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Christian König <christian.koenig@amd.com> · 2025-11-20
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Leon Romanovsky <leon@kernel.org> · 2025-11-20
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Christian König <christian.koenig@amd.com> · 2025-11-20
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Leon Romanovsky <leon@kernel.org> · 2025-11-20
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Jason Gunthorpe <jgg@ziepe.ca> · 2025-11-20
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Leon Romanovsky <leon@kernel.org> · 2025-11-19
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Christian König <christian.koenig@amd.com> · 2025-11-19
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Leon Romanovsky <leon@kernel.org> · 2025-11-19
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Christian König <christian.koenig@amd.com> · 2025-11-19
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Leon Romanovsky <leon@kernel.org> · 2025-11-19
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Leon Romanovsky <leon@kernel.org> · 2025-11-19
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Christian König <christian.koenig@amd.com> · 2025-11-20
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Leon Romanovsky <leon@kernel.org> · 2025-11-20
Re: [Linaro-mm-sig] [PATCH v8 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine · Jason Gunthorpe <jgg@ziepe.ca> · 2025-11-19
[PATCH v8 07/11] vfio: Export vfio device get and put registration helpers · Leon Romanovsky <leon@kernel.org> · 2025-11-11
RE: [PATCH v8 07/11] vfio: Export vfio device get and put registration helpers · "Tian, Kevin" <kevin.tian@intel.com> · 2025-11-18
[PATCH v8 08/11] vfio/pci: Share the core device pointer while invoking feature functions · Leon Romanovsky <leon@kernel.org> · 2025-11-11
RE: [PATCH v8 08/11] vfio/pci: Share the core device pointer while invoking feature functions · "Tian, Kevin" <kevin.tian@intel.com> · 2025-11-18
[PATCH v8 05/11] PCI/P2PDMA: Document DMABUF model · Leon Romanovsky <leon@kernel.org> · 2025-11-11
Re: [PATCH v8 05/11] PCI/P2PDMA: Document DMABUF model · Christian König <christian.koenig@amd.com> · 2025-11-19
Re: [PATCH v8 05/11] PCI/P2PDMA: Document DMABUF model · Leon Romanovsky <leon@kernel.org> · 2025-11-19
Re: [PATCH v8 05/11] PCI/P2PDMA: Document DMABUF model · Jason Gunthorpe <jgg@ziepe.ca> · 2025-11-19
Re: [PATCH v8 05/11] PCI/P2PDMA: Document DMABUF model · Christian König <christian.koenig@amd.com> · 2025-11-19
Re: [PATCH v8 05/11] PCI/P2PDMA: Document DMABUF model · Jason Gunthorpe <jgg@ziepe.ca> · 2025-11-19
Re: [PATCH v8 05/11] PCI/P2PDMA: Document DMABUF model · Leon Romanovsky <leon@kernel.org> · 2025-11-19
[PATCH v8 10/11] vfio/pci: Add dma-buf export support for MMIO regions · Leon Romanovsky <leon@kernel.org> · 2025-11-11
RE: [PATCH v8 10/11] vfio/pci: Add dma-buf export support for MMIO regions · "Tian, Kevin" <kevin.tian@intel.com> · 2025-11-18
Re: [PATCH v8 10/11] vfio/pci: Add dma-buf export support for MMIO regions · Jason Gunthorpe <jgg@ziepe.ca> · 2025-11-18
RE: [PATCH v8 10/11] vfio/pci: Add dma-buf export support for MMIO regions · "Tian, Kevin" <kevin.tian@intel.com> · 2025-11-18
Re: [PATCH v8 10/11] vfio/pci: Add dma-buf export support for MMIO regions · Jason Gunthorpe <jgg@ziepe.ca> · 2025-11-19
Re: [PATCH v8 10/11] vfio/pci: Add dma-buf export support for MMIO regions · Leon Romanovsky <leon@kernel.org> · 2025-11-19
[PATCH v8 11/11] vfio/nvgrace: Support get_dmabuf_phys · Leon Romanovsky <leon@kernel.org> · 2025-11-11
RE: [PATCH v8 11/11] vfio/nvgrace: Support get_dmabuf_phys · "Tian, Kevin" <kevin.tian@intel.com> · 2025-11-18
Re: [PATCH v8 11/11] vfio/nvgrace: Support get_dmabuf_phys · Ankit Agrawal <ankita@nvidia.com> · 2025-11-18
Re: [PATCH v8 11/11] vfio/nvgrace: Support get_dmabuf_phys · Jason Gunthorpe <jgg@ziepe.ca> · 2025-11-18
[PATCH v8 09/11] vfio/pci: Enable peer-to-peer DMA transactions by default · Leon Romanovsky <leon@kernel.org> · 2025-11-11
RE: [PATCH v8 09/11] vfio/pci: Enable peer-to-peer DMA transactions by default · "Tian, Kevin" <kevin.tian@intel.com> · 2025-11-18
Re: [PATCH v8 09/11] vfio/pci: Enable peer-to-peer DMA transactions by default · Alex Williamson <alex@shazbot.org> · 2025-11-18
RE: [PATCH v8 09/11] vfio/pci: Enable peer-to-peer DMA transactions by default · "Tian, Kevin" <kevin.tian@intel.com> · 2025-11-19
Re: [PATCH v8 09/11] vfio/pci: Enable peer-to-peer DMA transactions by default · Keith Busch <kbusch@kernel.org> · 2025-11-18
RE: [PATCH v8 09/11] vfio/pci: Enable peer-to-peer DMA transactions by default · "Tian, Kevin" <kevin.tian@intel.com> · 2025-11-19
Re: [PATCH v8 09/11] vfio/pci: Enable peer-to-peer DMA transactions by default · Leon Romanovsky <leon@kernel.org> · 2025-11-19

From: "Tian, Kevin" <kevin.tian@intel.com>
Date: 2025-11-19 05:55:03
Also in: dri-devel, kvm, linux-doc, linux-hardening, linux-iommu, linux-media, linux-mm, linux-pci, lkml

From: Leon Romanovsky <leon@kernel.org>
Sent: Tuesday, November 11, 2025 5:58 PM
+
+	if (dma->state && dma_use_iova(dma->state)) {
+		WARN_ON_ONCE(mapped_len != size);

then "goto err_unmap_dma".

Reviewed-by: Kevin Tian <kevin.tian@intel.com>

`h`	back out one level
`j`	next message in thread
`k`	previous message in thread
`l`	drill in
`Esc`	close help / fold thread tree
`?`	toggle this help