Re: [PATCH QEMU HCI-8.1 v6 00/34] vfio: support qemu-update with passed through GPU's and vGPU's #VSTOR-103860

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

Pls disregard this series as Sashiko couldn't properly review it due to
reaching its token limits.  I'll resend the series.

Andrey

On 10/30/26 4:45 PM, Andrey Drobyshev wrote:
> v5 -> v6:
> 
> mdev vGPUs are no longer supported, only SR-IOV vGPUs and whole GPUs
> (#VSTOR-150598 and #VSTOR-150595 closed).
> 
> - Patch 34 ("VZ: vfio/container: lift the CPR blocker for mdev devices")
>   dropped: it only let cpr-exec through for mdev devices
> 
> - Patch 35 ("VZ: migration: keep the estimate and wait over starved
>   windows") dropped: it only mattered for a device without pre-copy;
>   with pre-copy the sender isn't starved before the switchover
> 
> - Patch 36 -> 34 ("VZ: vfio/migration: don't wait for stop-copy-only
>   device state"): reduced to hw/vfio/migration.c: the stop-copy size is
>   reported as pending only while the device still has something to
>   pre-copy, so once it has drained the rest decides the switchover on
>   its own; the savevm and migration.c changes are gone.  Tagged
>   #VSTOR-141821 instead of the closed #VSTOR-150595
> 
> Fixes of the issues found by Sashiko AI review.
> 
> - Patch 27 ("vfio/listener: skip dirty page tracking during CPR")
>   replaced by "migration/ram: don't start dirty logging in CPR modes":
>   no RAM is migrated in a CPR mode, so the dirty log isn't started at
>   all, instead of VFIO alone skipping it; that also closed the gap
>   where VFIO tracking stayed off with the log left on by another user
> 
> - Patch 34 ("VZ: vfio/migration: don't wait for stop-copy-only device
>   state"): a failed pre-copy size query no longer passes for a drained
>   device
> 
> v5: http://lore.virtuozzo.com/20261023-vfio_v1-v5-0-ba0bf3c6d122@virtuozzo.com
> ---
> Akihiko Odaki (1):
>       vfio/pci: Grow buffer in vfio_pci_host_match()
> 
> Andrey Drobyshev (20):
>       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
>       migration/cpr-exec: close the persisted state if the channel fails to open
>       migration: don't refuse a blocker over a migration of another mode
>       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/migration: don't assume the device is running on CPR incoming
>       migration/ram: don't start dirty logging in CPR modes
>       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/migration: don't wait for stop-copy-only device state #VSTOR-141821
> 
> 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 +++++++-
>  docs/devel/migration/CPR.rst  |   8 +--
>  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/cpr.c                 |  11 ++--
>  hw/vfio/device.c              |  29 +++++++---
>  hw/vfio/migration-multifd.c   |   2 +
>  hw/vfio/migration.c           |  64 +++++++++++++++++++--
>  hw/vfio/pci.c                 |  25 ++++++---
>  hw/vfio/region.c              |  51 ++++++++++++++++-
>  hw/virtio/virtio-mmio.c       |  15 ++++-
>  hw/virtio/virtio-pci.c        |  15 ++++-
>  hw/virtio/virtio.c            |  10 +++-
>  include/hw/vfio/vfio-cpr.h    |   1 +
>  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          |  44 +++++++++++++--
>  migration/cpr-transfer.c      |  33 +++++++++++
>  migration/cpr.c               |  22 ++++++++
>  migration/migration.c         | 126 ++++++++++++++++++++++++------------------
>  migration/migration.h         |   5 ++
>  migration/multifd.c           |   2 +
>  migration/ram.c               |   7 ++-
>  migration/vmstate.c           |   7 ++-
>  tests/qtest/q35-test.c        |   6 --
>  33 files changed, 534 insertions(+), 140 deletions(-)
> ---
> base-commit: 02f55118bcb0533ce4c6544458c30803d96bea4a
> change-id: 20261009-vfio_v1-a176cddd6b64
> 
> Best regards,
> --  
> Andrey Drobyshev <andrey.drobyshev@virtuozzo.com>
>