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Linus Torvalds 2f43193b88 dma-mapping updates for Linux 7.3: 
- swiotlb: added new configuration option for the default pool size
 (Jagadeesh Pagadala) and reduced overhead for high watermark tracking
 (chenhuguanshen)
 
 - minor code cleanups and improvements (Vova Sharaienko, Honglei Huang
 and Marek Szyprowski)
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mergetag object 04a19b35dc
 type commit
 tag dma-mapping-7.3-2026-08-24-2
 tagger Marek Szyprowski <m.szyprowski@samsung.com> 1787582472 +0200
 
 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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Merge tags 'dma-mapping-7.3-2026-08-24' and 'dma-mapping-7.3-2026-08-24-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux

Pull dma-mapping updates from Marek Szyprowski:

 - swiotlb:
     - new configuration option for the default pool size
       (Jagadeesh Pagadala)
     - reduce overhead for high watermark tracking (chenhuguanshen)

 - minor code cleanups and improvements (Vova Sharaienko, Honglei Huang
   and Marek Szyprowski)

 - add proper tracking of the shared DMA state through direct, pool and
   swiotlb paths (Aneesh Kumar K.V)

   This is important for confidential-computing

* tag 'dma-mapping-7.3-2026-08-24' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux:
  dma/swiotlb: decouple high watermark tracking from CONFIG_DEBUG_FS
  MAINTAINERS: update tree for DMA MAPPING HELPERS
  dma/swiotlb: introduce Kconfig option for compile-time default pool size
  dma-direct: Improve readability of the dma_direct_map_sg() for P2PDMA case
  iommu/dma: simplify dma_iova_destroy() and drop the free_iova helper
  dma-coherent: use KiB in DMA allocation logs
  dma-coherent: fix spacing coding style issue

* tag 'dma-mapping-7.3-2026-08-24-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux: (23 commits)
  swiotlb: remove unused SWIOTLB_FORCE flag
  dma: swiotlb: handle set_memory_decrypted() failures
  dma: swiotlb: free dynamic pools from process context
  dma-direct: rename ret to cpu_addr in alloc helpers
  dma-direct: select DMA address encoding from __DMA_ATTR_ALLOC_CC_SHARED
  dma-direct: set decrypted flag for remapped DMA allocations
  dma-direct: make dma_direct_map_phys() honor DMA_ATTR_CC_SHARED
  dma-direct: Move dma_direct_map_phys() to dma/direct.c
  dma-direct: pass attrs to dma_capable() for DMA_ATTR_CC_SHARED checks
  dma-mapping: make dma_pgprot() honor __DMA_ATTR_ALLOC_CC_SHARED
  dma: swiotlb: track pool encryption state and honor DMA_ATTR_CC_SHARED
  dma: swiotlb: pass mapping attributes by reference
  dma-pool: track decrypted atomic pools and select them via attrs
  dma-direct: use __DMA_ATTR_ALLOC_CC_SHARED in alloc/free paths
  dma-mapping: Add internal shared allocation attribute
  coco: arm64: s390: powerpc: Mark secure guests with CC_ATTR_GUEST_MEM_ENCRYPT
  dma-direct: swiotlb: handle swiotlb alloc/free outside __dma_direct_alloc_pages
  s390: Expose protected virtualization through cc_platform_has()
  swiotlb: Preserve allocation virtual address for dynamic pools
  dma: free atomic pool pages by physical address
  ...
2026-08-24 11:35:46 -07:00
..
alpha pci-v7.3-changes 2026-08-23 12:44:10 -07:00
arc Treewide timer related cleanups: 2026-08-18 15:58:29 -07:00
arm - Fix timer debugobjects state corruption on CPU offlining 2026-08-22 16:11:56 -07:00
arm64 dma-mapping updates for Linux 7.3: 2026-08-24 11:35:46 -07:00
csky mm.git review status for mm-hotfixes-stable..mm-stable 2026-08-20 18:17:08 -07:00
hexagon Treewide timer related cleanups: 2026-08-18 15:58:29 -07:00
loongarch mm.git review status for mm-hotfixes-stable..mm-stable 2026-08-20 18:17:08 -07:00
m68k m68k updates for v7.3 2026-08-20 14:49:34 -07:00
microblaze Treewide timer related cleanups: 2026-08-18 15:58:29 -07:00
mips - switch gpio code to use swnodes 2026-08-21 12:39:49 -07:00
nios2 mm.git review status for mm-hotfixes-stable..mm-stable 2026-08-20 18:17:08 -07:00
openrisc Treewide timer related cleanups: 2026-08-18 15:58:29 -07:00
parisc parisc architecture fixes and updates for kernel v7.3-rc1: 2026-08-23 10:30:02 -07:00
powerpc dma-mapping updates for Linux 7.3: 2026-08-24 11:35:46 -07:00
riscv mm.git review status for mm-hotfixes-stable..mm-stable 2026-08-20 18:17:08 -07:00
s390 dma-mapping updates for Linux 7.3: 2026-08-24 11:35:46 -07:00
sh gpio updates for v7.3-rc1 2026-08-19 09:10:07 -07:00
sparc mm.git review status for mm-hotfixes-stable..mm-stable 2026-08-20 18:17:08 -07:00
um - Get rid of static_cpu_has() - one less API to care about testing CPU 2026-08-18 19:09:42 -07:00
x86 dma-mapping updates for Linux 7.3: 2026-08-24 11:35:46 -07:00
xtensa Modules changes for 7.3-rc1 2026-08-21 12:47:25 -07:00
.gitignore
Kconfig VDSO updates: 2026-08-18 16:56:25 -07:00