search for: modparm_netback_kthread

...to "netif->mapping", therefore page_ext is not used now. 2. Put netbk_add_netif() and netbk_remove_netif() into __netif_up() and __netif_down(). 3. Change the usage of kthread_should_stop(). 4. Use __get_free_pages() to replace kzalloc(). 5. Modify the changes to netif_be_dbg(). 6. Use MODPARM_netback_kthread to determine whether using tasklet or kernel thread. 7. Put small fields in the front, and large arrays in the end of struct xen_netbk. 8. Add more checks in netif_page_release(). Current netback uses one pair of tasklets for Tx/Rx data transaction. Netback tasklet could only run at one CPU at a t...

I get backtraces from the dom0 kernel when running a guest with networking (via netback) enabled such as the one below (there are some slight variations but the first two lines and most of the rest of the contents are the same). Michael Young BUG: sleeping function called from invalid context at mm/page_alloc.c:2190 in_atomic(): 1, irqs_disabled(): 0, pid: 0, name: swapper Pid: 0, comm: