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[v2,0/4] iommu: Fix the longstanding probe issues

Message ID cover.1740753261.git.robin.murphy@arm.com
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Series iommu: Fix the longstanding probe issues | expand

Message

Robin Murphy Feb. 28, 2025, 3:46 p.m. UTC 
v1: https://lore.kernel.org/linux-iommu/cover.1739486121.git.robin.murphy@arm.com/

Hi all,

This spin irons out a couple of issues which v1 had. Firstly there
should now be no change in behaviour for the weird of_dma_configure()
calls, other than possibly getting the warning if they deserve it.
Secondly I think there was still a possibility for probe to run via
the replay path while its "real" probe was waiting to reacquire the
lock; this is now solved by making dev->iommu a reliable indicator of
the probe lifecycle, with a couple more prep patches.

Thanks,
Robin.


Robin Murphy (4):
  iommu: Handle race with default domain setup
  iommu: Resolve ops in iommu_init_device()
  iommu: Keep dev->iommu state consistent
  iommu: Get DT/ACPI parsing into the proper probe path

 drivers/acpi/arm64/dma.c        |  5 +++
 drivers/acpi/scan.c             |  7 -----
 drivers/amba/bus.c              |  3 +-
 drivers/base/platform.c         |  3 +-
 drivers/bus/fsl-mc/fsl-mc-bus.c |  3 +-
 drivers/cdx/cdx.c               |  3 +-
 drivers/iommu/iommu-priv.h      |  2 ++
 drivers/iommu/iommu.c           | 55 ++++++++++++++++++++++++---------
 drivers/iommu/of_iommu.c        | 13 ++++++--
 drivers/of/device.c             |  7 ++++-
 drivers/pci/pci-driver.c        |  3 +-
 11 files changed, 74 insertions(+), 30 deletions(-)