[GIT PULL] second dma-mapping update for Linux 7.3

[Marek Szyprowski]

The following changes since commit 221049874b6a78c7d87bc826581b0695cd338e2b:

  arm64: RSI: fix field-spanning write warning in attestation token init (2026-07-26 14:22:46 +0000)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux.git tags/dma-mapping-7.3-2026-08-24-2

for you to fetch changes up to 04a19b35dc05354445f0096befad63af885bb77e:

  swiotlb: remove unused SWIOTLB_FORCE flag (2026-07-31 08:44:52 +0200)

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second dma-mapping update for Linux 7.3:

- important dma-mapping update for confidential-computing, which adds
proper tracking of the shared DMA state through direct, pool and swiotlb
paths (Aneesh Kumar K.V)

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This pull-request is based on the already merged stable branch from
arm64 tree. The conflic in arch/s390/mm/init.c should be resolved to:

swiotlb_init(true, SWIOTLB_VERBOSE | SWIOTLB_ANY);

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Aneesh Kumar K.V (Arm) (23):
      dma-direct: return struct page from dma_direct_alloc_from_pool()
      dma-pool: fix page leak in atomic_pool_expand() cleanup
      iommu/dma: Check atomic pool allocation result directly
      dma: free atomic pool pages by physical address
      swiotlb: Preserve allocation virtual address for dynamic pools
      s390: Expose protected virtualization through cc_platform_has()
      dma-direct: swiotlb: handle swiotlb alloc/free outside __dma_direct_alloc_pages
      coco: arm64: s390: powerpc: Mark secure guests with CC_ATTR_GUEST_MEM_ENCRYPT
      dma-mapping: Add internal shared allocation attribute
      dma-direct: use __DMA_ATTR_ALLOC_CC_SHARED in alloc/free paths
      dma-pool: track decrypted atomic pools and select them via attrs
      dma: swiotlb: pass mapping attributes by reference
      dma: swiotlb: track pool encryption state and honor DMA_ATTR_CC_SHARED
      dma-mapping: make dma_pgprot() honor __DMA_ATTR_ALLOC_CC_SHARED
      dma-direct: pass attrs to dma_capable() for DMA_ATTR_CC_SHARED checks
      dma-direct: Move dma_direct_map_phys() to dma/direct.c
      dma-direct: make dma_direct_map_phys() honor DMA_ATTR_CC_SHARED
      dma-direct: set decrypted flag for remapped DMA allocations
      dma-direct: select DMA address encoding from __DMA_ATTR_ALLOC_CC_SHARED
      dma-direct: rename ret to cpu_addr in alloc helpers
      dma: swiotlb: free dynamic pools from process context
      dma: swiotlb: handle set_memory_decrypted() failures
      swiotlb: remove unused SWIOTLB_FORCE flag

 Documentation/core-api/dma-attributes.rst    |  29 +++
 arch/arm64/mm/init.c                         |   5 +-
 arch/powerpc/platforms/pseries/cc_platform.c |   1 +
 arch/powerpc/platforms/pseries/svm.c         |   2 +-
 arch/s390/Kconfig                            |   1 +
 arch/s390/mm/init.c                          |  17 +-
 arch/x86/kernel/amd_gart_64.c                |  30 +--
 arch/x86/kernel/pci-dma.c                    |   4 +-
 drivers/iommu/dma-iommu.c                    |  20 +-
 drivers/xen/swiotlb-xen.c                    |   8 +-
 include/linux/dma-direct.h                   |  20 +-
 include/linux/dma-map-ops.h                  |   3 +-
 include/linux/dma-mapping.h                  |   8 +
 include/linux/swiotlb.h                      |  25 +-
 include/trace/events/dma.h                   |   3 +-
 kernel/dma/direct.c                          | 326 ++++++++++++++++++++-------
 kernel/dma/direct.h                          |  56 +----
 kernel/dma/mapping.c                         |  25 +-
 kernel/dma/pool.c                            | 237 ++++++++++++++-----
 kernel/dma/swiotlb.c                         | 292 ++++++++++++++++++------
 20 files changed, 810 insertions(+), 302 deletions(-)

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Thanks!

Best regards
Marek Szyprowski, PhD
Samsung R&D Institute Poland