Re: [PATCH v6 00/27] VFIO PCI Live Update (noiommu mode)

[Vipin Sharma]

On Fri, Nov 06, 2026 at 10:20:10PM +0000, David Matlack wrote:
> On Mon Nov 2, 2026 at 3:36 PM UTC, Vipin Sharma wrote:
> 
> > David Matlack (4):
> >   vfio: Enforce preserved devices are retrieved via
> >     LIVEUPDATE_SESSION_RETRIEVE_FD
> >   docs: liveupdate: Add documentation for VFIO PCI
> >   vfio: selftests: Add vfio_pci_liveupdate_uapi_test
> >   vfio: selftests: Add Makefile support for TEST_GEN_PROGS_EXTENDED
> >
> > Vipin Sharma (23):
> >   vfio/pci: Factor out the reset logic in VFIO PCI device close path
> >   vfio: Export various helpers from VFIO
> >   liveupdate: Export symbols needed by modules
> >   vfio/pci: Register a file handler with Live Update Orchestrator
> >   PCI: liveupdate: Add helpers to preserve struct pci_saved_state
> >   vfio: Add helpers to identify device files that can be preserved
> >   vfio/pci: Preserve vfio-pci device files across Live Update
> >   vfio: Introduce vfio_find_device() helper
> >   vfio: Refactor vfio_device_fops_cdev_open()
> >   vfio: Add API to open cdev device for Live Update restore
> >   vfio/pci: Retrieve preserved device files after Live Update
> >   vfio/pci: Protect incoming preserved devices until they finish Live
> >     Update
> >   vfio/pci: Take over preserved devices without resetting them
> >   vfio: selftests: Build liveupdate library in VFIO selftests
> >   vfio: selftests: Initialize vfio_pci_device using a VFIO cdev FD
> >   vfio: selftests: Add iommufd noiommu mode
> >   vfio: selftests: Add helpers to map DMA memory at IOVA == PA in
> >     noiommu mode
> >   vfio: selftests: Add helpers for Live Update DMA memory and sysfs
> >     state
> >   vfio: selftests: Add an attach() driver op
> >   vfio: selftests: Test preserving noiommu devices in
> >     vfio_pci_liveupdate_uapi_test
> >   vfio: selftests: Add vfio_pci_liveupdate_kexec_test
> >   vfio: selftests: Verify that opening VFIO device fails during Live
> >     Update
> >   vfio: selftests: Add continuous DMA to vfio_pci_liveupdate_kexec_test
> 
> This series is getting quite long. I would consider splitting out the
> selftests into its own series and we can iterate on each separately.

I think it is a good idea. In next version, v7,  I will send two series,
kernel and selftests patches.