From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sergey Tovpeko <tsv.devel@gmail.com>
Subject: xl: pci completion error
Date: Tue, 05 Oct 2010 15:40:10 +0400
Message-ID: <4CAB0E9A.5050507@gmail.com>
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Hello, list!

xl reports the error on passthrough-ed pci device removing.

do_pci_remove device 01:00.0
libxl: error: libxl_device.c:448:libxl__wait_for_device_model Device 
Model not ready
libxl: error: libxl_pci.c:858:do_pci_remove Device Model didn't respond 
in time
libxl: error: libxl.c:944:libxl_domain_destroy pci shutdown failed for 
domid 1
libxl: error: libxl.c:896:libxl_destroy_device_model Couldn't find 
device model's pid: No such file or directory
libxl: error: libxl.c:956:libxl_domain_destroy 
libxl_destroy_device_model failed for 1
libxl: error: libxl_device.c:307:libxl__devices_destroy 
/local/domain/1/device is empty



It seems that libxl_pci didn't get the 'pci-removed' status from 
qemu-dm. Please, have a look  who should set this status in qemu-dm. As 
for me I added xenstore_record_dm_state("pci-removed");
after do_pci_del(par);
in xenstore_process_dm_command_event function.

It fixed up my issue of removing pci devices.

Sergey.