linux-kernel - [PATCH v2 0/6] iommu/vt-d: Reset DMAR_UNITS

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Date:   Sat,  2 Jul 2022 09:56:04 +0800
From:   Lu Baolu <baolu.lu@...ux.intel.com>
To:     Joerg Roedel <joro@...tes.org>, Steve Wahl <steve.wahl@....com>,
        Kevin Tian <kevin.tian@...el.com>
Cc:     David Woodhouse <dwmw2@...radead.org>,
        Jerry Snitselaar <jsnitsel@...hat.com>,
        Mike Travis <mike.travis@....com>,
        Dimitri Sivanich <sivanich@....com>,
        Russ Anderson <russ.anderson@....com>, iommu@...ts.linux.dev,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        Lu Baolu <baolu.lu@...ux.intel.com>
Subject: [PATCH v2 0/6] iommu/vt-d: Reset DMAR_UNITS_SUPPORTED

Hi folks,

This is a follow-up series of changes proposed by this patch:

https://lore.kernel.org/linux-iommu/20220615183650.32075-1-steve.wahl@hpe.com/

It removes several static arrays of size DMAR_UNITS_SUPPORTED and sets
the DMAR_UNITS_SUPPORTED to 1024.

This series is also available on github:

https://github.com/LuBaolu/intel-iommu/commits/reset-DMAR_UNITS_SUPPORTED-v2

Please help review and suggest.

Best regards,
baolu

Change log:

v2:
 - Set the right @max for ida_alloc_range() and return the right error
   when ida_alloc_range() returns failure.
 - Replace xa_store() with xa_cmpxchg().
 - Set domain->nid to NUMA_NO_NODE when domain is detached from an
   iommu.
 - Avoid adding a new VTD_FLAG_IOMMU_PROBED flag. Remove the duplicate
   check directly.

v1:
 - https://lore.kernel.org/lkml/20220625125204.2199437-1-baolu.lu@linux.intel.com/
 - Initial post.

Lu Baolu (6):
  iommu/vt-d: Remove unused domain_get_iommu()
  iommu/vt-d: Use IDA interface to manage iommu sequence id
  iommu/vt-d: Refactor iommu information of each domain
  iommu/vt-d: Remove unnecessary check in intel_iommu_add()
  iommu/vt-d: Remove global g_iommus array
  iommu/vt-d: Make DMAR_UNITS_SUPPORTED default 1024

 include/linux/dmar.h        |   6 +-
 drivers/iommu/intel/iommu.h |  30 ++++--
 drivers/iommu/intel/dmar.c  |  35 ++-----
 drivers/iommu/intel/iommu.c | 189 ++++++++++++++----------------------
 drivers/iommu/intel/pasid.c |   2 +-
 drivers/iommu/intel/svm.c   |   2 +-
 6 files changed, 103 insertions(+), 161 deletions(-)

-- 
2.25.1