[PATCH QEMU HCI-8.0 v5 00/13] usb-host: support CPR migration

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

v4 -> v5:

  * Patch 5: deliver URBs that already completed in the kernel instead
    of dropping their data, and error out any a drain can't reap in
    time;

  * Patch 6 (NEW): drain each usb-host before its host controller is
    migrated, so a shared-context completion can't advance xHCI after
    it was saved;

  * Patch 7: remember the packets to replay from the reap callback, so
    only the genuinely in-flight ones are re-issued.

v4: http://lore.virtuozzo.com/qemu/20260924-usb-host_v3-v4-0-1cc48bf630e7@virtuozzo.com

Signed-off-by: Andrey Drobyshev <andrey.drobyshev@virtuozzo.com>
---
Andrey Drobyshev (13):
      usb-host: don't leak hostdev FD on open failure #VSTOR-137800
      usb-host: add migration blocker for CPR modes #VSTOR-137800
      usb-host: preserve hostdev FD during CPR migration #VSTOR-137800
      usb-host: factor out usb_host_reap_xfers() #VSTOR-137800
      usb-host: drain in-flight URBs across CPR #VSTOR-137800
      usb-host: drain before the host controller is migrated #VSTOR-137800
      usb-host: re-issue drained URBs if CPR is aborted #VSTOR-137800
      usb-host: skip product-string read on CPR incoming #VSTOR-137800
      usb-host: hand off the device across cpr-transfer #VSTOR-137800
      usb: migrate the interface altsetting #VSTOR-137800
      usb-host: reconfigure endpoints on CPR incoming #VSTOR-137800
      hcd-xhci: resync isochronous endpoints after CPR #VSTOR-137800
      usb-host: make CPR migration blocker conditional #VSTOR-137800

 hw/usb/bus.c                |  36 ++++
 hw/usb/hcd-xhci.c           |  20 ++
 hw/usb/host-libusb.c        | 512 ++++++++++++++++++++++++++++++++++++++++----
 include/migration/vmstate.h |   1 +
 4 files changed, 530 insertions(+), 39 deletions(-)
---
base-commit: f2f4b3de1a1be3360a77ca6ab79762466d238804
change-id: 20260914-usb-host_v3-bbfea86d1dad

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