linux-kernel - [GIT PULL] dma-mapping updates for Linux 6.10

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Message-ID: <ZktYriALqC7ZNQpa@infradead.org>
Date: Mon, 20 May 2024 07:05:34 -0700
From: Christoph Hellwig <hch@...radead.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, iommu@...ts.linux.dev,
	netdev@...r.kernel.org
Subject: [GIT PULL] dma-mapping updates for Linux 6.10

Note that the the dma sync optimizations reach into the networking code
and promptly caused a conflict where the netdev tree constifies the page
argument to page_pool_dma_sync_for_device and this tree renames that
function to page_pool_dma_sync_for_device.  The dma-mapping version of
the merge just works, but you might want to pick the contification
manually if you think it is useful.

The following changes since commit e67572cd2204894179d89bd7b984072f19313b03:

  Linux 6.9-rc6 (2024-04-28 13:47:24 -0700)

are available in the Git repository at:

  git://git.infradead.org/users/hch/dma-mapping.git tags/dma-mapping-6.10-2024-05-20

for you to fetch changes up to a6016aac5252da9d22a4dc0b98121b0acdf6d2f5:

  dma: fix DMA sync for drivers not calling dma_set_mask*() (2024-05-09 19:00:29 +0200)

----------------------------------------------------------------
dma-mapping updates for Linux 6.10

 - optimize DMA sync calls when they are no-ops (Alexander Lobakin)
 - fix swiotlb padding for untrusted devices (Michael Kelley)
 - add documentation for swiotb (Michael Kelley)

----------------------------------------------------------------
Alexander Lobakin (8):
      dma: compile-out DMA sync op calls when not used
      dma: avoid redundant calls for sync operations
      iommu/dma: avoid expensive indirect calls for sync operations
      page_pool: make sure frag API fields don't span between cachelines
      page_pool: don't use driver-set flags field directly
      page_pool: check for DMA sync shortcut earlier
      xsk: use generic DMA sync shortcut instead of a custom one
      dma: fix DMA sync for drivers not calling dma_set_mask*()

Michael Kelley (3):
      Documentation/core-api: add swiotlb documentation
      swiotlb: remove alloc_size argument to swiotlb_tbl_map_single()
      iommu/dma: fix zeroing of bounce buffer padding used by untrusted devices

 Documentation/core-api/index.rst                   |   1 +
 Documentation/core-api/swiotlb.rst                 | 321 +++++++++++++++++++++
 drivers/iommu/dma-iommu.c                          |  34 ++-
 drivers/net/ethernet/engleder/tsnep_main.c         |   2 +-
 drivers/net/ethernet/freescale/dpaa2/dpaa2-xsk.c   |   2 +-
 drivers/net/ethernet/intel/i40e/i40e_xsk.c         |   2 +-
 drivers/net/ethernet/intel/ice/ice_xsk.c           |   2 +-
 drivers/net/ethernet/intel/igc/igc_main.c          |   2 +-
 drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c       |   2 +-
 .../net/ethernet/mellanox/mlx5/core/en/xsk/rx.c    |   4 +-
 drivers/net/ethernet/mellanox/mlx5/core/en_rx.c    |   2 +-
 drivers/net/ethernet/netronome/nfp/nfd3/xsk.c      |   2 +-
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c  |   2 +-
 drivers/xen/swiotlb-xen.c                          |   2 +-
 include/linux/device.h                             |   4 +
 include/linux/dma-map-ops.h                        |  12 +
 include/linux/dma-mapping.h                        | 105 +++++--
 include/linux/iova.h                               |   5 +
 include/linux/swiotlb.h                            |   2 +-
 include/net/page_pool/types.h                      |  25 +-
 include/net/xdp_sock_drv.h                         |   7 +-
 include/net/xsk_buff_pool.h                        |  14 +-
 kernel/dma/Kconfig                                 |   5 +
 kernel/dma/mapping.c                               |  69 +++--
 kernel/dma/swiotlb.c                               |  62 +++-
 net/core/page_pool.c                               |  78 +++--
 net/xdp/xsk_buff_pool.c                            |  29 +-
 27 files changed, 634 insertions(+), 163 deletions(-)
 create mode 100644 Documentation/core-api/swiotlb.rst