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IOMMU fixes for Linux v7.3-rc3:

Browse source 
- RISC-V IOMMU:
   - Serialize command queue publication to prevent concurrent producers
     from exposing incomplete or out-of-order commands to hardware.
   - Wait for queue space outside the command queue lock.
   - Avoid waiting for IOFENCE completion when command enqueue failed.
 
 - AMD IOMMU:
   - Prevent GA log buffers from being reallocated and leaked during
     resume, where allocation also occurs in an unsuitable syscore
     callback context.
   - Fix a regression on older systems whose firmware advertises
     incorrect IOMMU features.
   - Preserve allocation errors when assigning host domain IDs to nested
     domains.
 
 - s390 IOMMU:
   - Prevent a NULL dereference when translating an unmapped IOVA with
     five-level ZPCI translation tables.
 
 - Miscellaneous:
   - Remove a stale MAINTAINERS entry and clean up unused or redundant
     AMD IOMMU declarations, macros, and checks.
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Merge tag 'iommu-fixes-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux

Pull IOMMU fixes from Joerg Roedel:
 "RISC-V:

   - Serialize command queue publication to prevent concurrent producers
     from exposing incomplete or out-of-order commands to hardware

   - Wait for queue space outside the command queue lock

   - Avoid waiting for IOFENCE completion when command enqueue failed

  AMD:

   - Prevent GA log buffers from being reallocated and leaked during
     resume, where allocation also occurs in an unsuitable syscore
     callback context

   - Fix a regression on older systems whose firmware advertises
     incorrect IOMMU features

   - Preserve allocation errors when assigning host domain IDs to nested
     domains

  s390:

   - Prevent a NULL dereference when translating an unmapped IOVA with
     five-level ZPCI translation tables

  Misc:

   - Remove a stale MAINTAINERS entry and clean up unused or redundant
     AMD IOMMU declarations, macros, and checks"

* tag 'iommu-fixes-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux:
  iommu/amd: Remove unused macro
  iommu/amd: Remove redundant checks from interrupt handler path
  iommu/amd: Remove redundant check in irq_remapping_select()
  iommu/amd: Make iommu_sva_set_dev_pasid as static
  MAINTAINERS: Drop the nonexistent vsi-iommu.h file entry
  iommu/amd: Fix ineffective error check in nested domain allocation
  iommu/amd: Fix premature break in init_iommu_one() again
  iommu/amd: Do not reallocate GA log buffers on resume
  iommu/s390: Fix NULL dereference in iova_to_phys() with ZPCI_TABLE_TYPE_RFX
  iommu/riscv: Avoid waiting on failed command enqueue
  iommu/riscv: Serialize command queue publishing
  iommu/riscv: Add command queue lock
This commit is contained in:
Linus Torvalds 2026-09-12 07:55:52 -07:00
commit f6e213d5a2
11 changed files with 93 additions and 88 deletions
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