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[PATCH v13 0/2] SMMU handling for PCIe Passthrough on ARM


  • To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
  • From: Mykyta Poturai <Mykyta_Poturai@xxxxxxxx>
  • Date: Wed, 16 Jul 2025 07:43:46 +0000
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  • Cc: Mykyta Poturai <Mykyta_Poturai@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Julien Grall <julien@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
  • Delivery-date: Wed, 16 Jul 2025 07:43:56 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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  • Thread-topic: [PATCH v13 0/2] SMMU handling for PCIe Passthrough on ARM

This series introduces SMMU handling for PCIe passthrough on ARM. These patches
should be able to be upstreamed independently from the vPCI series [1]. See [2]
for notes about test cases.

[1] https://lists.xenproject.org/archives/html/xen-devel/2023-10/msg00660.html
[2] https://lists.xenproject.org/archives/html/xen-devel/2023-06/msg01135.html

v12->v13:
* removed merged patches
* move addition of pci-passthrough enabled check in reset physdev op to a
separate patch

v11->v12:
* see individual patches

v10->v11:
* see individual patches

v9->v10:
* drop iommu/arm: Add iommu_dt_xlate()
* see individual patches

v8->v9:
* see individual patches

v7->v8:
* no changes

v6->v7:
* drop ("xen/arm: don't pass iommu properties to hwdom for iommu-map")

v5->v6:
* don't revert ("xen/arm: Add cmdline boot option "pci-passthrough = 
<boolean>"")
* add ("xen/arm: enable dom0 to use PCI devices with pci-passthrough=no")

v4->v5:
* drop ("xen/arm: Improve readability of check for registered devices")
* drop ("xen/arm: Move is_protected flag to struct device")
* add ("xen/arm: don't pass iommu properties to hwdom for iommu-map")
* add ("xen/arm: Fix mapping for PCI bridge mmio region")
* revert ("xen/arm: Add cmdline boot option "pci-passthrough = <boolean>"")
* add ("xen/arm: Map ITS doorbell register to IOMMU page tables.")
* fix test case #1 with PCI device in dom0

v3->v4:
* split a change from ("xen/arm: Move is_protected flag to struct device") into
  a new separate patch
* see individual patches for further details

v2->v3:
* drop "pci/arm: Use iommu_add_dt_pci_device()"
* drop "RFC: pci/arm: don't do iommu call for phantom functions"
* move invocation of sideband ID mapping function to add_device()
  platform_ops/iommu_ops hook

Mykyta Poturai (1):
  arm/pci: add pci_passhtrough_enabled check to pci_device_reset

Stewart Hildebrand (1):
  xen/arm: enable dom0 to use PCI devices with pci-passthrough=no

 xen/arch/arm/include/asm/pci.h |  2 ++
 xen/arch/arm/pci/pci.c         | 14 +++++++++++++-
 xen/arch/x86/include/asm/pci.h |  6 ++++++
 xen/drivers/pci/physdev.c      |  7 +++++--
 xen/include/xen/pci.h          |  5 +++++
 5 files changed, 31 insertions(+), 3 deletions(-)

-- 
2.34.1



 


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