Michael S. Tsirkin 506b02eb1c xen/io: use virt_xxx barriers ...

include/xen/interface/io/ring.h 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

..

interface

xen/io: use virt_xxx barriers

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

acpi.h

xen / ACPI: notify xen when reduced hardware sleep is available

2013-07-31 14:22:35 +02:00

balloon.h

xen/balloon: use hotplugged pages for foreign mappings etc.

2015-10-23 14:20:05 +01:00

events.h

xen/events: Support event channel rebind on ARM

2015-08-20 12:24:15 +01:00

features.h

…

grant_table.h

xen/grant-table: Add an helper to iterate over a specific number of grants

2015-10-23 14:20:46 +01:00

hvc-console.h

treewide: use __printf not __attribute__((format(printf,...)))

2011-10-31 17:30:54 -07:00

hvm.h

xen: Convert printks to pr_<level>

2013-06-28 11:19:58 -04:00

page.h

xen: Add Xen specific page definition

2015-10-23 14:20:33 +01:00

platform_pci.h

xen/pvhvm: Remove the xen_platform_pci int.

2014-01-03 14:54:53 -05:00

swiotlb-xen.h

Merge remote-tracking branch 'stefano/swiotlb-xen-9.1' into stable/for-linus-3.13

2013-11-08 16:10:48 -05:00

tmem.h

xen: tmem: enable Xen tmem shim to be built/loaded as a module

2013-04-30 17:04:01 -07:00

xen-ops.h

xen/privcmd: Further s/MFN/GFN/ clean-up

2015-09-08 18:03:54 +01:00

xen.h

xen/pvh/x86: Define what an PVH guest is (v3).

2014-01-06 10:43:58 -05:00

xenbus_dev.h

xenbus: Add support for xenbus backend in stub domain

2012-05-21 09:53:18 -04:00

xenbus.h

xen/xenbus: Rename *RING_PAGE* to *RING_GRANT*

2015-10-23 14:20:46 +01:00