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authorDylan Reid <dgreid@chromium.org>2017-11-06 14:06:24 -0800
committerchrome-bot <chrome-bot@chromium.org>2017-12-18 17:54:57 -0800
commit295ccac1f3d6d9291ebc86df076920102cdbb63d (patch)
tree9267c0954ec8fc9e63a2706d976534ad00186b16 /devices/src/virtio/mod.rs
parent39aa26b1680471acf26981d3c65829ccd216e0a4 (diff)
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devices: Add balloon
The balloon device is used to take regions of unused memory from the
guest and allow other host processes to use that memory.

Change-Id: I06c821365a58672d605fc7555beaec599cae1b15
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/759306
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Diffstat (limited to 'devices/src/virtio/mod.rs')
-rw-r--r--devices/src/virtio/mod.rs4
1 files changed, 4 insertions, 0 deletions
diff --git a/devices/src/virtio/mod.rs b/devices/src/virtio/mod.rs
index 7c1bf1c..f225142 100644
--- a/devices/src/virtio/mod.rs
+++ b/devices/src/virtio/mod.rs
@@ -4,6 +4,7 @@
 
 //! Implements virtio devices, queues, and transport mechanisms.
 
+mod balloon;
 mod queue;
 mod mmio;
 mod block;
@@ -13,6 +14,7 @@ mod wl;
 
 pub mod vhost;
 
+pub use self::balloon::*;
 pub use self::queue::*;
 pub use self::mmio::*;
 pub use self::block::*;
@@ -30,10 +32,12 @@ const DEVICE_FAILED: u32 = 0x80;
 const TYPE_NET: u32 = 1;
 const TYPE_BLOCK: u32 = 2;
 const TYPE_RNG: u32 = 4;
+const TYPE_BALLOON: u32 = 5;
 const TYPE_VSOCK: u32 = 19;
 const TYPE_WL: u32 = 30;
 
 const INTERRUPT_STATUS_USED_RING: u32 = 0x1;
+const INTERRUPT_STATUS_CONFIG_CHANGED: u32 = 0x2;
 
 /// Offset from the base MMIO address of a virtio device used by the guest to notify the device of
 /// queue events.