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virtio: add MemoryListener to cache ring translations

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The cached translations are RCU-protected to allow efficient use
when processing virtqueues.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Paolo Bonzini 2017-01-27 16:40:17 +01:00 • committed by Michael S. Tsirkin
parent 5eba0404b9
commit c611c76417
2 changed files with 103 additions and 3 deletions
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1
include/hw/virtio/virtio.h
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@ -85,6 +85,7 @@ struct VirtIODevice
uint32_t generation;
int nvectors;
VirtQueue *vq;
MemoryListener listener;
uint16_t device_id;
bool vm_running;
bool broken; /* device in invalid state, needs reset */