Hi Gerd, I'm very happy to present to you a pull-request for usb-redir live-migration support. I've tested this combined with Spice seamless migration, and it can successful: 1) migrate a vm while running "dd if=/dev/zero of=/dev/sdb1 bs=32K" inside the guest with sdb being a redirect USB-2 mass storage device. 2) migrate a vm while running camorama inside the vm showing a 720p video from a redirected USB-2 webcam at 30 fps!
Note this is based on usb-next rather then master / usb.62, since one of my patches would otherwise conflict with your recent ehci changes. The following changes since commit a44fd2e0c66b2276f586948702e5ebc7136fdb73: usb-host: allow emulated (non-async) control requests without USBPacket (2012-09-06 12:03:41 +0200) are available in the git repository at: git://people.freedesktop.org/~jwrdegoede/qemu usb-for-gerd for you to fetch changes up to 5f5f0f1eaa29ec1cb07fc906acf917d5648b3bcf: usb-redir: Add chardev open / close debug logging (2012-09-07 13:44:49 +0200) ---------------------------------------------------------------- Hans de Goede (9): ehci: Don't set seen to 0 when removing unseen queue-heads ehci: Walk async schedule before and after migration ehci: Don't process too much frames in 1 timer tick usb: Migrate over device speed and speedmask usb-redir: Change cancelled packet code into a generic packet-id queue usb-redir: Add an already_in_flight packet-id queue usb-redir: Store max_packet_size in endp_data usb-redir: Add support for migration usb-redir: Add chardev open / close debug logging hw/usb.h | 4 +- hw/usb/bus.c | 2 + hw/usb/hcd-ehci.c | 61 ++++++- hw/usb/redirect.c | 482 ++++++++++++++++++++++++++++++++++++++++++++++++++---- 4 files changed, 508 insertions(+), 41 deletions(-) Thanks & Regards, Hans