linux-kernel - [PATCH v2 0/4] iommufd: Destroy vdevice on device unbind

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Message-Id: <20250623094946.1714996-1-yilun.xu@linux.intel.com>
Date: Mon, 23 Jun 2025 17:49:42 +0800
From: Xu Yilun <yilun.xu@...ux.intel.com>
To: jgg@...dia.com,
	jgg@...pe.ca,
	kevin.tian@...el.com,
	will@...nel.org,
	aneesh.kumar@...nel.org
Cc: iommu@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	joro@...tes.org,
	robin.murphy@....com,
	shuah@...nel.org,
	nicolinc@...dia.com,
	aik@....com,
	dan.j.williams@...el.com,
	baolu.lu@...ux.intel.com,
	yilun.xu@...ux.intel.com,
	yilun.xu@...el.com
Subject: [PATCH v2 0/4] iommufd: Destroy vdevice on device unbind

This is v2 of Aneesh's patch [1].

It is to solve the lifecycle issue that vdevice may outlive idevice. It
is a prerequisite for TIO, to ensure extra secure configurations (e.g.
TSM Bind/Unbind) against vdevice could be rolled back on idevice unbind,
so that VFIO could still work on the physical device without surprise.

This patch revives some Nicolin's vdevice_alloc change in v5.

[1]: https://lore.kernel.org/linux-iommu/20250610065146.1321816-1-aneesh.kumar@kernel.org/
[2]: https://lore.kernel.org/all/53025c827c44d68edb6469bfd940a8e8bc6147a5.1729897278.git.nicolinc@nvidia.com/

Xu Yilun (4):
  iommufd: Add iommufd_object_tombstone_user() helper
  iommufd/viommu: Fix the uninitialized iommufd_vdevice::ictx
  iommufd: Destroy vdevice on idevice destroy
  iommufd/selftest: Add coverage for vdevice tombstone

 drivers/iommu/iommufd/device.c          | 43 +++++++++++++++++++++++++
 drivers/iommu/iommufd/iommufd_private.h | 34 ++++++++++++++++++-
 drivers/iommu/iommufd/main.c            | 32 +++++++++++++-----
 drivers/iommu/iommufd/viommu.c          | 34 +++++++++++++++++--
 tools/testing/selftests/iommu/iommufd.c | 13 ++++++++
 5 files changed, 144 insertions(+), 12 deletions(-)


base-commit: 19272b37aa4f83ca52bdf9c16d5d81bdd1354494
-- 
2.25.1