[PATCH v3 0/7] Reorganize Intel VT-D to be ready for iommupt

[Jason Gunthorpe <jgg@nvidia.com>]

This is similar to a series I sent for AMD.

Lightly reorganize some of the page table related code so there is greater
isolation between the first and second stage logic. iommupt will introduce
distinct types and code flows for first and second stages, having them all
combined together is difficult.

Splitting actually makes things generally more understandable anyhow as
they do share only a little code. Most of the registers and logic are in
fact different. That was being obscured by small helper functions that
combine the first and second stage information.

This would replace some of the patches recently sent by Wei.

The full branch including the iommpt conversion is here:

    https://github.com/jgunthorpe/linux/commits/iommu_pt_vtd

v3:
 - Add intel_domain_is_fs/ss_paging() as wrappers around the ops check
 - Set force_snooping for the ss as well
v2: https://patch.msgid.link/r/0-v2-e5c01fc5ce82+26216-vtd_prep_jgg@nvidia.com
 - Fix intel_pasid_replace_first_level() signature
 - Exit on all the WARN_ON's in intel_iommu_domain_free()
 - Update comments and commit messages
v1: https://patch.msgid.link/r/0-v1-20c73f153f4c+1895-vtd_prep_jgg@nvidia.com

Jason Gunthorpe (7):
  iommu/vt-d: Lift the __pa to
    domain_setup_first_level/intel_svm_set_dev_pasid()
  iommu/vt-d: Fold domain_exit() into intel_iommu_domain_free()
  iommu/vt-d: Do not wipe out the page table NID when devices detach
  iommu/vt-d: Split intel_iommu_domain_alloc_paging_flags()
  iommu/vt-d: Create unique domain ops for each stage
  iommu/vt-d: Split intel_iommu_enforce_cache_coherency()
  iommu/vt-d: Split paging_domain_compatible()

 drivers/iommu/intel/cache.c  |   5 +-
 drivers/iommu/intel/iommu.c  | 327 +++++++++++++++++++++--------------
 drivers/iommu/intel/iommu.h  |  19 +-
 drivers/iommu/intel/nested.c |   4 +-
 drivers/iommu/intel/pasid.c  |  17 +-
 drivers/iommu/intel/pasid.h  |  11 +-
 drivers/iommu/intel/svm.c    |   3 +-
 7 files changed, 235 insertions(+), 151 deletions(-)


base-commit: e04c78d86a9699d136910cfc0bdcf01087e3267e
-- 
2.43.0