Michael S. Tsirkin 5bb0c9be2a xenbus: use virt_xxx barriers ...

drivers/xen/xenbus/xenbus_comms.c uses
full memory barriers to communicate with the other side.

For guests compiled with CONFIG_SMP, smp_wmb and smp_mb
would be sufficient, so mb() and wmb() here are only needed if
a non-SMP guest runs on an SMP host.

Switch to virt_xxx barriers which serve this exact purpose.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>

2016-01-12 20:47:03 +02:00

..

Makefile

…

xenbus_client.c

xenbus: Support multiple grants ring with 64KB

2015-10-23 14:20:47 +01:00

xenbus_comms.c

xenbus: use virt_xxx barriers

2016-01-12 20:47:03 +02:00

xenbus_comms.h

…

xenbus_dev_backend.c

xen: Use correctly the Xen memory terminologies

2015-09-08 18:03:49 +01:00

xenbus_dev_frontend.c

xenbus: Add proper handling of XS_ERROR from Xenbus for transactions.

2015-02-05 15:04:46 +00:00

xenbus_probe_backend.c

xen: remove DEFINE_XENBUS_DRIVER() macro

2014-10-06 10:27:57 +01:00

xenbus_probe_frontend.c

xen: remove DEFINE_XENBUS_DRIVER() macro

2014-10-06 10:27:57 +01:00

xenbus_probe.c

xen/xenbus: Use Xen page definition

2015-10-23 14:20:37 +01:00

xenbus_probe.h

xen: remove DEFINE_XENBUS_DRIVER() macro

2014-10-06 10:27:57 +01:00

xenbus_xs.c

…