linux-kernel - [GIT PULL] (swiotlb) stable/for-linus-5.15

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Date:   Wed, 1 Sep 2021 17:08:53 -0400
From:   Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:     tientzu@...omium.org, will@...nel.org, pasic@...ux.ibm.com,
        linux-kernel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [GIT PULL] (swiotlb) stable/for-linus-5.15

Hey Linus,

Please git pull the following branch:

git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb.git stable/for-linus-5.15

which has a new feature called restricted DMA pools. It allows SWIOTLB to utilize
per-device (or per-platform) allocated memory pools instead of using the global one.

The first big user of this is ARM Confidential Computing where the memory for DMA
operations can be set per platform.

Please pull:

 .../bindings/reserved-memory/reserved-memory.txt   |  36 ++-
 arch/powerpc/platforms/pseries/svm.c               |   6 +
 arch/s390/mm/init.c                                |   2 +-
 drivers/base/core.c                                |   4 +
 drivers/gpu/drm/i915/gem/i915_gem_internal.c       |   2 +-
 drivers/gpu/drm/nouveau/nouveau_ttm.c              |   2 +-
 drivers/iommu/dma-iommu.c                          |  12 +-
 drivers/of/device.c                                |  40 +++
 drivers/pci/xen-pcifront.c                         |   2 +-
 drivers/xen/swiotlb-xen.c                          |   8 +-
 include/linux/device.h                             |   4 +
 include/linux/swiotlb.h                            |  57 +++-
 kernel/dma/Kconfig                                 |  13 +
 kernel/dma/direct.c                                |  59 +++-
 kernel/dma/direct.h                                |   8 +-
 kernel/dma/swiotlb.c                               | 352 +++++++++++++++------
 16 files changed, 469 insertions(+), 138 deletions(-)

Claire Chang (14):
      swiotlb: Refactor swiotlb init functions
      swiotlb: Refactor swiotlb_create_debugfs
      swiotlb: Set dev->dma_io_tlb_mem to the swiotlb pool used
      swiotlb: Update is_swiotlb_buffer to add a struct device argument
      swiotlb: Update is_swiotlb_active to add a struct device argument
      swiotlb: Use is_swiotlb_force_bounce for swiotlb data bouncing
      swiotlb: Move alloc_size to swiotlb_find_slots
      swiotlb: Refactor swiotlb_tbl_unmap_single
      swiotlb: Add restricted DMA alloc/free support
      swiotlb: Add restricted DMA pool initialization
      dt-bindings: of: Add restricted DMA pool
      of: Add plumbing for restricted DMA pool
      swiotlb: fix implicit debugfs declarations
      swiotlb: use depends on for DMA_RESTRICTED_POOL

Dominique Martinet (1):
      swiotlb: add overflow checks to swiotlb_bounce

Halil Pasic (1):
      s390/pv: fix the forcing of the swiotlb

Will Deacon (7):
      of: Return success from of_dma_set_restricted_buffer() when !OF_ADDRESS
      swiotlb: Convert io_default_tlb_mem to static allocation
      swiotlb: Emit diagnostic in swiotlb_exit()
      swiotlb: Free tbl memory in swiotlb_exit()
      powerpc/svm: Don't issue ultracalls if !mem_encrypt_active()
      of: Move of_dma_set_restricted_buffer() into device.c
      of: restricted dma: Don't fail device probe on rmem init failure