[PATCH QEMU HCI-8.0 v3 00/12] usb-host: support CPR migration

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

v3 fixes the issues reported by Den.

v2 -> v3:

  * v2 patch 1 ("migration/cpr: fix use-after-free in cpr_delete_fd()"):
    dropped, already applied.

  * Patch 1: record the caller's FD before the early exits so every
    failure path frees it.

  * Patch 2: make the blocker message a complete sentence;

  * Patch 3: use cpr_open_fd();

  * Patch 5:
    - fail .pre_save() when a URB can't be reaped;
    - fix a block-comment style warning;
    - reword the TD-replay note.

  * Patch 6: drop the packet from the re-issue list in
    usb_host_cancel_packet();

  * Patch 8:
    - honour cpr_handed_off in usb_host_close();
    - move the forward declarations above the notifier's doc comment.

  * Patch 10:
    - validate the migrated altsetting and fail the incoming migration
      instead of asserting on it;
    - check libusb_claim_interface() failures instead of silently
      continuing;
    - reword commit message.

  * Patch 11: gate the resync to cpr_is_incoming().

Signed-off-by: Andrey Drobyshev <andrey.drobyshev@virtuozzo.com>
---
Andrey Drobyshev (12):
      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: 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 | 435 ++++++++++++++++++++++++++++++++++++++++++++++++---
 3 files changed, 471 insertions(+), 20 deletions(-)
---
base-commit: 87f111d087cff956908ccb22daedb596b3734877
change-id: 20260914-usb-host_v3-bbfea86d1dad

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