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authorRusty Russell <rusty@rustcorp.com.au>2013-03-20 13:50:14 +1030
committerRusty Russell <rusty@rustcorp.com.au>2013-03-20 14:05:33 +1030
commitf87d0fbb579818fed3eeb0923cc253163ab93039 (patch)
treef33e06a6cb4eb4656e710f8ad70100e2130a32a5 /drivers/vhost/Kconfig
parent61d0b5a4b2777dcf5daef245e212b3c1fa8091ca (diff)
downloadblackbird-op-linux-f87d0fbb579818fed3eeb0923cc253163ab93039.tar.gz
blackbird-op-linux-f87d0fbb579818fed3eeb0923cc253163ab93039.zip
vringh: host-side implementation of virtio rings.
Getting use of virtio rings correct is tricky, and a recent patch saw an implementation of in-kernel rings (as separate from userspace). This abstracts the business of dealing with the virtio ring layout from the access (userspace or direct); to do this, we use function pointers, which gcc inlines correctly. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost/Kconfig')
-rw-r--r--drivers/vhost/Kconfig8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig
index bf243177ffe1..85b773a93a5d 100644
--- a/drivers/vhost/Kconfig
+++ b/drivers/vhost/Kconfig
@@ -1,6 +1,7 @@
config VHOST_NET
tristate "Host kernel accelerator for virtio net"
depends on NET && EVENTFD && (TUN || !TUN) && (MACVTAP || !MACVTAP)
+ select VHOST_RING
---help---
This kernel module can be loaded in host kernel to accelerate
guest networking with virtio_net. Not to be confused with virtio_net
@@ -12,3 +13,10 @@ config VHOST_NET
if STAGING
source "drivers/vhost/Kconfig.tcm"
endif
+
+config VHOST_RING
+ tristate
+ ---help---
+ This option is selected by any driver which needs to access
+ the host side of a virtio ring.
+
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