David Vrabel 0d08fceb2e xen-netback: fix race between napi_complete() and interrupt handler ... When the NAPI budget was not all used, xenvif_poll() would call napi_complete() /after/ enabling the interrupt. This resulted in a race between the napi_complete() and the napi_schedule() in the interrupt handler. The use of local_irq_save/restore() avoided by race iff the handler is running on the same CPU but not if it was running on a different CPU. Fix this properly by calling napi_complete() before reenabling interrupts (in the xenvif_napi_schedule_or_enable_irq() call). Signed-off-by: David Vrabel <david.vrabel@citrix.com> Acked-by: Wei Liu <wei.liu2@citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2014-05-16 16:27:23 -04:00
..
common.h	xen-netback: fix race between napi_complete() and interrupt handler	2014-05-16 16:27:23 -04:00
interface.c	xen-netback: fix race between napi_complete() and interrupt handler	2014-05-16 16:27:23 -04:00
Makefile
netback.c	xen-netback: fix race between napi_complete() and interrupt handler	2014-05-16 16:27:23 -04:00
xenbus.c	drivers/net/*: Fix FSF address in file headers	2013-12-06 12:37:55 -05:00