[PATCH QEMU HCI-8.1 v4 00/31] vfio: support qemu-update with passed through GPU's and vGPU's #VSTOR-103860

[Andrey Drobyshev <andrey.drobyshev@virtuozzo.com>]

v3 -> v4:

- Patch 31 (NEW) ("VZ: vfio/container: lift the CPR blocker for mdev
  devices"): CPR for mdev vGPUs, needs a kernel which reverts ef3a3f6a294b

Fixes of the issues found by Sashiko AI review.

- Patch 4 (NEW) ("migration/cpr-exec: require a file or exec migration URI"):
  a save or a migration issued with the mode parameter left at cpr-exec
  after a failed qemu-update ran as cpr-exec and lost the VM

- Patch 5 (NEW) ("migration: close the CPR state if the outgoing channel
  fails to open"): the CPR state was leaked when the file or exec URI
  couldn't be opened

- Patch 14 -> 16 ("migration: yank: Move register instance earlier"): the
  postcopy guard checked a state which is never reset once postcopy was
  advised, so every later migrate was refused; the instance is registered
  with errp instead of &error_abort

- Patch 18 -> 20 ("kvm: tolerate ioctls after kvm_close()"): kvm_state is
  kept allocated and the ioctls return 0 instead of -ENODEV, since
  kvm_set_irq() and friends dereference it and abort on an error

- Patch 20 -> 22 ("migration/cpr: add cpr_is_in_progress()"): the outgoing
  CPR is told by the open CPR state, not by the runstate, which a snapshot
  of a paused VM doesn't change

- Patch 25 -> 27 ("VZ: migration/cpr-exec: take the vhost-net devices back if
  exec fails"): the vring call and err fds are set again, VHOST_RESET_OWNER
  dropped them too

v3: http://lore.virtuozzo.com/20261016-vfio_v1-v3-0-47487cb5a8e5@virtuozzo.com
---
Akihiko Odaki (1):
      vfio/pci: Grow buffer in vfio_pci_host_match()

Andrey Drobyshev (17):
      VZ: migration/cpr-exec: fix Error leak in preserve_ram()
      migration/cpr-exec: restore RAM write access if exec fails
      vfio/region: create BAR dma-bufs with O_CLOEXEC
      migration/cpr-exec: require a file or exec migration URI
      migration: close the CPR state if the outgoing channel fails to open
      kvm: tolerate ioctls after kvm_close()
      kvm: fix coalesced MMIO flush racing with kvm_close()
      migration/cpr: add cpr_is_in_progress()
      vfio/migration: don't migrate device state during CPR
      vfio/listener: skip dirty page tracking during CPR
      VZ: vfio/cpr: don't close KVM on cpr-exec
      VZ: migration/cpr-exec: abort cpr-exec if memory can't be preserved
      VZ: migration/cpr-exec: take the vhost-net devices back if exec fails
      VZ: migration/cpr-exec: don't exec if a vhost-net device can't be released
      VZ: vfio/region: preserve BAR mappings across cpr-exec #VSTOR-103860
      VZ: migration/cpr-exec: allow cpr-exec with VFIO devices #VSTOR-103860
      VZ: vfio/container: lift the CPR blocker for mdev devices #VSTOR-103860

Arun Menon (1):
      migration: Fix regression of passing error_fatal into vmstate_load_state()

Cédric Le Goater (2):
      vfio/pci: Reject invalid MSI-X Table and PBA BIR values
      vfio/pci: Fix information leak in vfio_rom_read()

Fabiano Rosas (3):
      migration: yank: Move register instance earlier
      migration: Free cpr-transfer MigrationAddress along with gsource
      migration: Move CPR HUP watch to cpr-transfer.c

Igor Mammedov (1):
      q35: Fix migration of SMRAM state

Mario Casquero (1):
      vfio/pci: Initialize rom_read_failed in vfio_pci_load_rom()

Markus Armbruster (1):
      migration: Plug memory leaks after migrate_set_error()

Peter Xu (1):
      migration: Fix crash on second migration when cancel early

Tycho Andersen (AMD) (1):
      hw/vfio: Fix liveness check in vfio_connect_kvm_msi_virq()

Vladimir Sementsov-Ogievskiy (1):
      migration: vmstate_save_state_v: fix double error_setg

Yanfei Xu (1):
      migration: ensure APIC is loaded prior to VFIO PCI devices

 accel/kvm/kvm-all.c           |  24 ++++++++-
 hw/display/virtio-gpu.c       |  22 ++++++---
 hw/intc/apic_common.c         |   1 +
 hw/net/vhost_net.c            |  62 +++++++++++++++++++++--
 hw/pci-host/q35.c             |  25 +++++-----
 hw/pci/pci.c                  |  15 +++++-
 hw/s390x/virtio-ccw.c         |  17 ++++++-
 hw/scsi/spapr_vscsi.c         |  10 +++-
 hw/vfio/container-legacy.c    |  13 -----
 hw/vfio/cpr.c                 |  11 +++--
 hw/vfio/device.c              |  29 ++++++++---
 hw/vfio/listener.c            |   6 +++
 hw/vfio/migration-multifd.c   |   2 +
 hw/vfio/migration.c           |  38 ++++++++++++++-
 hw/vfio/pci.c                 |  25 +++++++---
 hw/vfio/region.c              |  47 +++++++++++++++++-
 hw/virtio/virtio-mmio.c       |  15 +++++-
 hw/virtio/virtio-pci.c        |  15 +++++-
 hw/virtio/virtio.c            |  10 ++--
 include/hw/vfio/vfio-cpr.h    |   2 +-
 include/hw/vfio/vfio-device.h |   2 -
 include/hw/virtio/vhost.h     |   2 +
 include/migration/cpr.h       |   7 +++
 include/migration/vmstate.h   |   1 +
 include/net/vhost_net.h       |   3 +-
 migration/cpr-exec.c          |  40 +++++++++++++--
 migration/cpr-transfer.c      |  33 +++++++++++++
 migration/cpr.c               |  22 +++++++++
 migration/migration.c         | 111 +++++++++++++++++++++++-------------------
 migration/migration.h         |   5 ++
 migration/multifd.c           |   2 +
 migration/vmstate.c           |   7 ++-
 tests/qtest/q35-test.c        |   6 ---
 33 files changed, 492 insertions(+), 138 deletions(-)
---
base-commit: f3c1d9ef263edfab8d2a273078493bb766dcf8f8
change-id: 20261009-vfio_v1-a176cddd6b64

Best regards,
--  
Andrey Drobyshev <andrey.drobyshev@virtuozzo.com>