Juergen Gross e6ea898e56 xen/netback: use lateeoi irq binding ... commit 23025393db upstream. In order to reduce the chance for the system becoming unresponsive due to event storms triggered by a misbehaving netfront use the lateeoi irq binding for netback and unmask the event channel only just before going to sleep waiting for new events. Make sure not to issue an EOI when none is pending by introducing an eoi_pending element to struct xenvif_queue. When no request has been consumed set the spurious flag when sending the EOI for an interrupt. This is part of XSA-332. Cc: stable@vger.kernel.org Reported-by: Julien Grall <julien@xen.org> Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Wei Liu <wl@xen.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-11-05 11:43:11 +01:00
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Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
common.h	xen/netback: use lateeoi irq binding	2020-11-05 11:43:11 +01:00
hash.c	xen-netback: don't populate the hash cache on XenBus disconnect	2019-02-28 12:50:37 -08:00
interface.c	xen/netback: use lateeoi irq binding	2020-11-05 11:43:11 +01:00
netback.c	xen/netback: use lateeoi irq binding	2020-11-05 11:43:11 +01:00
rx.c	xen/netback: use lateeoi irq binding	2020-11-05 11:43:11 +01:00
xenbus.c	xen-netback: no need to check return value of debugfs_create functions	2019-08-11 21:30:06 -07:00